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96 results on '"Schlemmer, S."'

1. Rotational spectroscopy of CH3OD with a reanalysis of CH3OD toward IRAS 16293–2422.

Author

Ilyushin, V. V., Müller, H. S. P., Drozdovskaya, M. N., Jørgensen, J. K., Bauerecker, S., Maul, C., Porohovoi, R., Alekseev, E. A., Dorovskaya, O., Zakharenko, O., Lewen, F., Schlemmer, S., Xu, L.-H., and Lees, R. M.

Subjects
ASTRONOMICAL observations, QUANTUM numbers, RADIO lines, QUANTUM wells, ASTROCHEMISTRY
Abstract

We have started a measurement campaign of numerous methanol isotopologs in low-lying torsional states in order to provide extensive line lists for radio astronomical observations from an adequate spectroscopic model and to investigate how the intricate vibrationtorsion-rotation interactions manifest themselves in the spectra of different isotopic species. After CD3OH and CD3OD, we turn our focus to CH3OD, which is an important species for studying deuteration in prestellar cores and envelopes that enshroud protostars. Notably, deuteration is frequently viewed as a diagnostic tool for star formation. The measurements used in this study were obtained in two spectroscopic laboratories and cover large fractions of the 34 GHz-1.35 THz range. As done in previous studies, we employed a torsion-rotation Hamiltonian model for our analysis that is based on the rho-axis method. The resulting model describes the ground and first excited torsional states of CH3OD well up to quantum numbers J ⩽ 51 and Ka ⩽ 18. We derived a line list for radio astronomical observations from this model that is accurate up to at least 1.35 THz and should be sufficient for all types of radio astronomical searches for this methanol isotopolog in these two lowest torsional states. This line list was applied to a reinvestigation of CH3OD in data from the Protostellar Interferometric Line Survey of IRAS 16293–2422 obtained with the Atacama Large Millimeter/submillimeter Array. The new accurately determined value for the column density of CH3OD implies that the deuteration in methanol differs in its two functional groups by a factor of ~7.5. [ABSTRACT FROM AUTHOR]

Published
2024
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2. Discovery of H2CCCH+ in TMC-1 (Corrigendum)

Author

Silva, W. G. D. P., primary, Cernicharo, J., additional, Schlemmer, S., additional, Marcelino, N., additional, Loison, J.-C., additional, Agúndez, M., additional, Gupta, D., additional, Wakelam, V., additional, Thorwirth, S., additional, Cabezas, C., additional, Tercero, B., additional, Doménech, J. L., additional, Fuentetaja, R., additional, Kim, W.-J., additional, de Vicente, P., additional, and Asvany, O., additional

Published
2023
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4. Discovery of H2CCCH+ in TMC-1 (Corrigendum)

Author

Silva, W. G. D. P, Cernicharo, José, Schlemmer, S., Marcelino, Nuria, Loison, J. -C., Agúndez, Marcelino, Gupta, D., Wakelam, V., Thorwirth, S., Cabezas, Carlos, Tercero, Belén, Doménech, José Luis, Fuentetaja, R., Kim, W. -J., Vicente, P. de, Asvany, O., Silva, W. G. D. P, Cernicharo, José, Schlemmer, S., Marcelino, Nuria, Loison, J. -C., Agúndez, Marcelino, Gupta, D., Wakelam, V., Thorwirth, S., Cabezas, Carlos, Tercero, Belén, Doménech, José Luis, Fuentetaja, R., Kim, W. -J., Vicente, P. de, and Asvany, O.

Abstract

Several errors were inadvertently introduced in two tables during the production process. In Table 1, the left arrows were changed to right arrows, and in Table A.1, spaces were inserted before the decimal points of the values. The corrected tables are presented here.

Published
2023

5. Discovery of H2CCCH+ in TMC-1

Author

European Commission, Silva, W. G. D. P., Cernicharo, José, Schlemmer, S., Marcelino, Nuria, Loison, J. -C., Agúndez, Marcelino, Gupta, D., Wakelam, V., Thorwirth, S., Cabezas, Carlos, Tercero, Belén, Doménech, José Luis, Fuentetaja, R., Kim, W. -J., Vicente, P. de, Asvany, O., European Commission, Silva, W. G. D. P., Cernicharo, José, Schlemmer, S., Marcelino, Nuria, Loison, J. -C., Agúndez, Marcelino, Gupta, D., Wakelam, V., Thorwirth, S., Cabezas, Carlos, Tercero, Belén, Doménech, José Luis, Fuentetaja, R., Kim, W. -J., Vicente, P. de, and Asvany, O.

Abstract

Based on a novel laboratory method, 14 millimeter-wave lines of the molecular ion H2CCCH+ have been measured in high resolution, and the spectroscopic constants of this asymmetric rotor determined with high accuracy. Using the Yebes 40 m and IRAM 30 m radio telescopes, we detected four lines of H2CCCH+ toward the cold dense core TMC-1. With a dipole moment of about 0.55 D obtained from high-level ab initio calculations, we derive a column density of 5.4±1×1011 cm−2 and 1.6±0.5×1011 cm−2 for the ortho and para species, respectively, and an abundance ratio N(H2CCC)/N(H2CCCH+) = 2.8±0.7. The chemistry of H2CCCH+ is modeled using the most recent chemical network for the reactions involving the formation of H2CCCH+. We find a reasonable agreement between model predictions and observations, and new insights into the chemistry of C3-bearing species in TMC-1 were obtained.

Published
2023

6. Investigation of the rotational spectrum of CD3OD and an astronomical search toward IRAS 16293-2422.

Author

Ilyushin, V. V., Müller, H. S. P., Jørgensen, J. K., Bauerecker, S., Maul, C., Porohovoi, R., Alekseev, E. A., Dorovskaya, O., Lewen, F., Schlemmer, S., and Lees, R. M.

Subjects
QUANTUM numbers, QUANTUM wells, EXCITED states, RADIO lines, PROTOSTARS
Abstract

Solar-type prestellar cores and protostars frequently display large amounts of deuterated organic molecules and, in particular, high relative abundances of doubly and triply deuterated isotopologs. Recent findings on CHD2OH and CD3OH toward IRAS 16293–2422 suggest that even fully deuterated methanol, CD3OD, may be detectable as well. However, searches for CD3OD are hampered in particular by the lack of intensity information from a spectroscopic model. The objective of the present investigation is to develop a spectroscopic model of CD3OD in low-lying torsional states that is sufficiently accurate to facilitate searches for this isotopolog in space. We carried out a new measurement campaign for CD3OD involving two spectroscopic laboratories that covers the 34 GHz–1.1 THz range. A torsion-rotation Hamiltonian model based on the rho-axis method was employed for our analysis. Our resulting model describes the ground and first excited torsional states of CD3OD well up to quantum numbers J ⩽ 51 and Ka ⩽ 23. We derived a line list for radio-astronomical observations from this model that is accurate up to at least 1.1 THz and should be sufficient for all types of radio-astronomical searches for this methanol isotopolog. This line list was used to search for CD3OD in data from the Protostellar Interferometric Line Survey of IRAS 16293–2422 obtained with the Atacama Large Millimeter/submillimeter Array. While we found several emission features that can be attributed largely to CD3OD, their number is still not sufficiently high enough to establish a clear detection. Nevertheless, the estimate of 2 × 1015 cm−2 derived for the CD3OD column density may be viewed as an upper limit that can be compared to column densities of CD3OH, CH3OD, and CH3OH. The comparison indicates that the CD3OD column density toward IRAS 16293–2422 is in line with the enhanced D/H ratios observed for multiply deuterated complex organic molecules. [ABSTRACT FROM AUTHOR]

Published
2023
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8. Rotational and rovibrational spectroscopy of CD3OH with an account of CD3OH toward IRAS 16293−2422

Author

Ilyushin, V. V., primary, Müller, H. S. P., additional, Jørgensen, J. K., additional, Bauerecker, S., additional, Maul, C., additional, Bakhmat, Y., additional, Alekseev, E. A., additional, Dorovskaya, O., additional, Vlasenko, S., additional, Lewen, F., additional, Schlemmer, S., additional, Berezkin, K., additional, and Lees, R. M., additional

Published
2022
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11. Deuteration of ammonia in the starless core Ophiuchus/H-MM1

Author

Harju, J., primary, Daniel, F., additional, Sipilä, O., additional, Caselli, P., additional, Pineda, J. E., additional, Friesen, R. K., additional, Punanova, A., additional, Güsten, R., additional, Wiesenfeld, L., additional, Myers, P. C., additional, Faure, A., additional, Hily-Blant, P., additional, Rist, C., additional, Rosolowsky, E., additional, Schlemmer, S., additional, and Shirley, Y. L., additional

Published
2017
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12. Submillimeter spectroscopy and astronomical searches of vinyl mercaptan, C2H3SH.

Author

Martin-Drumel, M.-A., Lee, K. L. K., Belloche, A., Zingsheim, O., Thorwirth, S., Müller, H. S. P., Lewen, F., Garrod, R. T., Menten, K. M., McCarthy, M. C., and Schlemmer, S.

Subjects
ASTRONOMICAL spectroscopy, ASTROCHEMISTRY, MICROWAVE spectroscopy, INTERSTELLAR molecules, ASTRONOMICAL surveys, HIGH-frequency discharges
Abstract

Context. New laboratory investigations of the rotational spectrum of postulated astronomical species are essential to support the assignment and analysis of current astronomical surveys. In particular, considerable interest surrounds sulfur analogs of oxygen-containing interstellar molecules and their isomers. Aims. To enable reliable interstellar searches of vinyl mercaptan, the sulfur-containing analog to the astronomical species vinyl alcohol, we investigated its pure rotational spectrum at millimeter wavelengths. Methods. We extended the pure rotational investigation of the two isomers syn and anti vinyl mercaptan to the millimeter domain using a frequency-multiplication spectrometer. The species were produced by a radiofrequency discharge in 1,2-ethanedithiol. Additional transitions were remeasured in the centimeter band using Fourier-transform microwave spectroscopy to better determine rest frequencies of transitions with low-J and low-Ka values. Experimental investigations were supported by quantum chemical calculations on the energetics of both the [C2,H4,S] and [C2,H4,O] isomeric families. Interstellar searches for both syn and anti vinyl mercaptan as well as vinyl alcohol were performed in the EMoCA spectral line survey carried out toward Sgr B2(N2) with ALMA. Results. Highly accurate experimental frequencies (to better than 100 kHz accuracy) for both syn and anti isomers of vinyl mercaptan are measured up to 250 GHz; these deviate considerably from predictions based on extrapolation of previous microwave measurements. Reliable frequency predictions of the astronomically most interesting millimeter-wave lines for these two species can now be derived from the best-fit spectroscopic constants. From the energetic investigations, the four lowest singlet isomers of the [C2,H4,S] family are calculated to be nearly isoenergetic, which makes this family a fairly unique test bed for assessing possible reaction pathways. Upper limits for the column density of syn and anti vinyl mercaptan are derived toward the extremely molecule-rich star-forming region Sgr B2(N2) enabling comparison with selected complex organic molecules. [ABSTRACT FROM AUTHOR]

Published
2019
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16. Herschel/HIFI discovery of interstellar chloronium (H2Cl+) [Letter]

Author

Lis, D. C., Pearson, J. C., Neufeld, D. A., Schilke, P., Mueller, H. S. P., Gupta, H., Bell, T. A., Comito, C., Phillips, T. G., Bergin, E. A., Ceccarelli, C., Goldsmith, P. F., Blake, G. A., Bacmann, A., Baudry, A., Benedettini, M., Benz, A., Black, J., Boogert, A., Bottinelli, S., Cabrit, S., Caselli, P., Castets, A., Caux, E., Cernicharo, J., Codella, C., Coutens, A., Crimier, N., Crockett, N. R., Daniel, F., Demyk, K., Dominic, C., Dubernet, M. -L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Fuente, A., Gerin, M., Giesen, T. F., Goicoechea, J. R., Helmich, F., Hennebelle, P., Henning, Th., Herbst, E., Hily-Blant, P., Hjalmarson, A., Hollenbach, D., Jack, T., Joblin, C., Johnstone, D., Kahane, C., Kama, M., Kaufman, M., Klotz, A., Langer, W. D., Larsson, B., Le Bourlot, J., Lefloch, B., Le Petit, F., Li, D., Liseau, R., Lord, S. D., Lorenzani, A., Maret, S., Martin, P. G., Melnick, G. J., Menten, K. M., Morris, P., Murphy, J. A., Nagy, Z., Nisini, B., Ossenkopf, V., Pacheco, S., Pagani, L., Parise, Berengere, Perault, M., Plume, R., Qin, S. -L., Roueff, E., Salez, M., Sandqvist, A., Saraceno, P., Schlemmer, S., Schuster, K., Snell, R., Stutzki, J., Tielens, A., Trappe, N., van der Tak, F. F. S., van der Wiel, M. H. D., van Dishoeck, E., Vastel, C., Viti, S., Wakelam, V., Walters, A., Wang, S., Wyrowski, F., Yorke, H. W., Yu, S., Zmuidzinas, J., Delorme, Y., Desbat, J. -P., Guesten, R., Krieg, J. -M., and Delforge, B.

Subjects
QB
Abstract

We report the first detection of chloronium, H2Cl+, in the interstellar medium, using the HIFI instrument aboard the Herschel Space Observatory. The 212–101 lines of ortho-HCl+ and ortho-HCl+ are detected in absorption towards NGC 6334I, and the 111–000 transition of para-HCl+ is detected in absorption towards NGC 6334I and Sgr B2(S). The H2Cl+ column densities are compared to those of the chemically-related species HCl. The derived HCl/H2Cl+ column density ratios, ~1–10, are within the range predicted by models of diffuse and dense photon dominated regions (PDRs). However, the observed H2Cl+ column densities, in excess of 1013 cm-2, are significantly higher than the model predictions. Our observations demonstrate the outstanding spectroscopic capabilities of HIFI for detecting new interstellar molecules and providing key constraints for astrochemical models.

Published
2010

19. Detection of OH+ and H2O+ towards Orion KL

Author

Gupta, H., Rimmer, P., Pearson, J.C., Yu, S., Herbst, E., Harada, N., Bergin, E.A., Neufeld, D.A., Melnick, G.J., Bachiller, R., Bells, T.A., Blake, G.A., Caux, E., Ceccarelli, C., Cernicharo, J., Chattopadhyay, G., Comito, C., Cabrit, S., Crockett, N.R., Daniel, F., Falgarone, E., Diez-Gonzalez, M.C., Dubernet, M.-L., Erickson, N., Emprechtinger, M., Encrenaz, P., Gerin, M., Gill, J.J., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Joblin, C., Johnstone, D., Langer, W.D., Larsson, B., Latter, W.B., Lin, R.J., Lis, D.C., Liseau, R., Lord, S.D., Maiwald, F.W., Maret, S., Martin, P.G., Martin-Pintado, J., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.A., Nordh, L.H., Olberg, M., Ossenkopf, V., Pagani, L., Perault, M., Phillips , T.G., Plume, R., Qin, S.-L., Salez, M., Samoska, L.A., Schilke, P., Schlecht, E., Schlemmer, S., Szczerba, R., Stutzki, J., Trappe, N., van der Tak, F.F.S., Vastel, C., Wang, S., Yorke, H.W., Zmuidzinas, J., Boogert, A., Gusten, R., Hartogh, P., Honigh, N., Karpov, A., Kooi, J., Krieg, J.-M., Schieder, R., and Zaal, P.

Subjects
Experimental Physics
Abstract

We report observations of the reactive molecular ions OH+, H2O+, and H3O+ towards Orion KL with Herschel/HIFI. All three N = 1−0 finestructure transitions of OH+ at 909, 971, and 1033 GHz and both fine-structure components of the doublet ortho-H2O+ 111−000 transition at 1115 and 1139 GHz were detected; an upper limit was obtained for H3O+. OH+ and H2O+ are observed purely in absorption, showing a narrow component at the source velocity of 9 km s−1, and a broad blueshifted absorption similar to that reported recently for HF and para-H18 2 O, and attributed to the low velocity outflow of Orion KL.We estimate column densities of OH+ and H2O+ for the 9 kms−1 component of 9±3×1012 cm−2 and 7±2×1012 cm−2, and those in the outflow of 1.9±0.7×1013 cm−2 and 1.0±0.3×1013 cm−2. Upper limits of 2.4×1012 cm−2 and 8.7×1012 cm−2 were derived for the column densities of ortho and para-H3O+ from transitions near 985 and 1657 GHz. The column densities of the three ions are up to an order of magnitude lower than those obtained from recent observations ofW31C and W49N. The comparatively low column densities may be explained by a higher gas density despite the assumption of a very high ionization rate.

Published
2010

21. Herschel observations of EXtra-Ordinary Sources (HEXOS): detecting spiral arm clouds by CH absorption lines

Author

Qin, S.-L., Schilke, P., Comito, C., Moller, T., Rolff, R., Muller, H.S.P., Belloche, A., Menten, K.M., Lis, D.C., Phillips , T.G., Bergin, E.A., Bell, T.A., Crockett, N.R., Blake, G.A., Cabrit, S., Caux, E., Ceccarelli, C., Cernicharo, J., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Herbst, E., Joblin, C., Johnstone, D., Langer, W.D., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Morris, P., Murphy, J.Anthony, Neufeld, D.A., Ossenkopf, V., Pagani, L., Pearson, J.C., Perault, M., Plume, R., Salez, M., Schlemmer, S., Stutzki, J., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Wang, S., Yorke, H.W., Yu, S., Zmuidzinas, J., Boogert, A., Gusten, R., Hartogh, P., Honingh, E., Karpov, A., Kooi, J., Krieg, J.-M., Schieder, R., Diez-Gonzalez, M.C., Bachiller, R., Martin-Pintado, J., Baechtold, W., Olberg, M., Nordh, L.H., Gill, J.L., Chattopadhyay, G., Qin, S.-L., Schilke, P., Comito, C., Moller, T., Rolff, R., Muller, H.S.P., Belloche, A., Menten, K.M., Lis, D.C., Phillips , T.G., Bergin, E.A., Bell, T.A., Crockett, N.R., Blake, G.A., Cabrit, S., Caux, E., Ceccarelli, C., Cernicharo, J., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Herbst, E., Joblin, C., Johnstone, D., Langer, W.D., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Morris, P., Murphy, J.Anthony, Neufeld, D.A., Ossenkopf, V., Pagani, L., Pearson, J.C., Perault, M., Plume, R., Salez, M., Schlemmer, S., Stutzki, J., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Wang, S., Yorke, H.W., Yu, S., Zmuidzinas, J., Boogert, A., Gusten, R., Hartogh, P., Honingh, E., Karpov, A., Kooi, J., Krieg, J.-M., Schieder, R., Diez-Gonzalez, M.C., Bachiller, R., Martin-Pintado, J., Baechtold, W., Olberg, M., Nordh, L.H., Gill, J.L., and Chattopadhyay, G.

Abstract

We have observed CH absorption lines (J = 3/2, N = 1 ← J = 1/2, N = 1) against the continuum source Sgr B2(M) using the Herschel/HIFI instrument. With the high spectral resolution and wide velocity coverage provided by HIFI, 31 CH absorption features with different radial velocities and line widths are detected and identified. The narrower line width and lower column density clouds show “spiral arm” cloud characteristics, while the absorption component with the broadest line width and highest column density corresponds to the gas from the Sgr B2 envelope. The observations show that each “spiral arm” harbors multiple velocity components, indicating that the clouds are not uniform and that they have internal structure. This line-of-sight through almost the entire Galaxy offers unique possibilities to study the basic chemistry of simple molecules in diffuse clouds, as a variety of different cloud classes are sampled simultaneously. We find that the linear relationship between CH and H2 column densities found at lower AV by UV observations does not continue into the range of higher visual extinction. There, the curve flattens, which probably means that CH is depleted in the denser cores of these clouds.

Published
2010

22. Reversal of infall in SgrB2(M) revealed by Herschel/HIFI observations of HCN lines at THz frequencies

Author

Rolffs, R., Schilke, P., Comito, C., Bergin, E.A., van der Tak, F.F.S., Lis, D.C., Qin, S.-L., Menten, K.M., Gusten, R., Bell, T.A., Blake, G.A., Caux, E., Ceccarelli, C., Cernicharo, J., Crockett, N.R., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Herbst, E., Joblin, C., Johnstone, D., Langer, W.D., Latter, W.D., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Ossenkopf, V., Pearson, J.C., Perault, M., Phillips , T.G., Plume, R., Schlemmer, S., Stutzki, J., Trappe, Neil, Vastel, C., Wang, S., Yorke, H.W., Yu, S., Zmuidzinas, J., Diez-Gonzalez, C., Bachiller, R., Martin-Pintado, J., Baechtold, W., Olberg, M., Nordh, L.H., Gill, J.J., Chattopadhyay, G., Rolffs, R., Schilke, P., Comito, C., Bergin, E.A., van der Tak, F.F.S., Lis, D.C., Qin, S.-L., Menten, K.M., Gusten, R., Bell, T.A., Blake, G.A., Caux, E., Ceccarelli, C., Cernicharo, J., Crockett, N.R., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Herbst, E., Joblin, C., Johnstone, D., Langer, W.D., Latter, W.D., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Ossenkopf, V., Pearson, J.C., Perault, M., Phillips , T.G., Plume, R., Schlemmer, S., Stutzki, J., Trappe, Neil, Vastel, C., Wang, S., Yorke, H.W., Yu, S., Zmuidzinas, J., Diez-Gonzalez, C., Bachiller, R., Martin-Pintado, J., Baechtold, W., Olberg, M., Nordh, L.H., Gill, J.J., and Chattopadhyay, G.

Abstract

Aims. To investigate the accretion and feedback processes in massive star formation, we analyze the shapes of emission lines from hot molecular cores, whose asymmetries trace infall and expansion motions. Methods. The high-mass star forming region SgrB2(M) was observed with Herschel/HIFI (HEXOS key project) in various lines of HCN and its isotopologues, complemented by APEX data. The observations are compared to spherically symmetric, centrally heated models with density power-law gradient and different velocity fields (infall or infall+expansion), using the radiative transfer code RATRAN. Results. The HCN line profiles are asymmetric, with the emission peak shifting from blue to red with increasing J and decreasing line opacity (HCN to H13CN). This is most evident in the HCN 12–11 line at 1062 GHz. These line shapes are reproduced by a model whose velocity field changes from infall in the outer part to expansion in the inner part. Conclusions. The qualitative reproduction of the HCN lines suggests that infall dominates in the colder, outer regions, but expansion dominates in the warmer, inner regions. We are thus witnessing the onset of feedback in massive star formation, starting to reverse the infall and finally disrupting the whole molecular cloud. To obtain our result, the THz lines uniquely covered by HIFI were critically important.

Published
2010

23. Herschel observations of deuterated water towards Sgr B2(M)

Author

Comito, C., Schilke, P., Rolffs, R., Lis, D.C., Belloche, A., Bergin, E.A., Phillips , T.G., Bell, T.A., Crockett, N.R., Wang, S., Blake, G.A., Caux, E., Ceccarelli, C., Cernicharo, J., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Herbst, E., Joblin, C., Johnstone, D., Langer, W.D., Latter, W.D., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Neufeld, D.A., Ossenkopf, V., Pearson, J.C., Perault, M., Plume, R., Qin, S.-L., Schlemmer, S., Stutzki, J., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Yorke, H.W., Yu, S., Olberg, M., Szczerba, R., Larsson, B., Liseau, R., Lin, R.H., Samoska, L.A., Schlecht, E., Comito, C., Schilke, P., Rolffs, R., Lis, D.C., Belloche, A., Bergin, E.A., Phillips , T.G., Bell, T.A., Crockett, N.R., Wang, S., Blake, G.A., Caux, E., Ceccarelli, C., Cernicharo, J., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Herbst, E., Joblin, C., Johnstone, D., Langer, W.D., Latter, W.D., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Neufeld, D.A., Ossenkopf, V., Pearson, J.C., Perault, M., Plume, R., Qin, S.-L., Schlemmer, S., Stutzki, J., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Yorke, H.W., Yu, S., Olberg, M., Szczerba, R., Larsson, B., Liseau, R., Lin, R.H., Samoska, L.A., and Schlecht, E.

Abstract

Observations of HDO are an important complement for studies of water, because they give strong constraints on the formation processes – grain surfaces versus energetic process in the gas phase, e.g. in shocks. The HIFI observations of multiple transitions of HDO in Sgr B2(M) presented here allow the determination of the HDO abundance throughout the envelope, which has not been possible before with ground-based observations only. The abundance structure has been modeled with the spherical Monte Carlo radiative transfer code RATRAN, which also takes radiative pumping by continuum emission from dust into account. The modeling reveals that the abundance of HDO rises steeply with temperature from a low abundance (2.5 × 10−11) in the outer envelope at temperatures below 100 K through a medium abundance (1.5 × 10−9) in the inner envelope/outer core at temperatures between 100 and 200 K, and finally a high abundance ( 3.5 × 10−9) at temperatures above 200 K in the hot core.

Published
2010

24. Herschel/HIFI measurements of the ortho/para ratio in water towards Sagittarius B2(M) and W31C

Author

Lis, D.C., Phillips, T.G., Goldsmith, P.F., Neufeld, D.A., Herbst, E., Comito, C., Schilke, P., Muller, H.S.P., Bergin, E.A., Gerin, M., Bell, T.A., Emprechtinger, M., Black, J., Blake, G.A., Boulanger, F., Caux, E., Ceccarelli, C., Cernicharo, J., Coutens, A., Crockett, N.R., Daniel, F., Dartois, E., De Luca, M., Dubernet, M.-L., Encrenaz, P., Falgarone, E., Geballe, T.R., Godard, B., Giesen, T.F., Goicoechea, J.R., Gry, C., Gupta, H., Hennebelle, P., Hily-Blant, P., Kolos, R., Krelowski, J., Joblin, C., Johnstone, D., Kazmierczak, M., Lord, S.D., Maret, S., Martin, P.G., Martin-Pintado, J., Melnick, G.J., Menten, K.M., Monjel, R., Mookerjea, B., Morris, P., Murphy, J.Anthony, Ossenkopf, V., Pearson, J.C., Perault, M., Persson, C., Plume, R., Qin, S.-L., Salez, M., Schlemmer, S., Schmidt, M., Sonnentrucker, P., Stutzki, J., Teyssier, D., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Wang, S., Yorke, H.W., Yu, S., Zmuidzinas, J., Boogert, A., Erickson, N., Karpov, A., Kooi, J., Maiwald, F.W., Schieder, R., Zaal, P., Lis, D.C., Phillips, T.G., Goldsmith, P.F., Neufeld, D.A., Herbst, E., Comito, C., Schilke, P., Muller, H.S.P., Bergin, E.A., Gerin, M., Bell, T.A., Emprechtinger, M., Black, J., Blake, G.A., Boulanger, F., Caux, E., Ceccarelli, C., Cernicharo, J., Coutens, A., Crockett, N.R., Daniel, F., Dartois, E., De Luca, M., Dubernet, M.-L., Encrenaz, P., Falgarone, E., Geballe, T.R., Godard, B., Giesen, T.F., Goicoechea, J.R., Gry, C., Gupta, H., Hennebelle, P., Hily-Blant, P., Kolos, R., Krelowski, J., Joblin, C., Johnstone, D., Kazmierczak, M., Lord, S.D., Maret, S., Martin, P.G., Martin-Pintado, J., Melnick, G.J., Menten, K.M., Monjel, R., Mookerjea, B., Morris, P., Murphy, J.Anthony, Ossenkopf, V., Pearson, J.C., Perault, M., Persson, C., Plume, R., Qin, S.-L., Salez, M., Schlemmer, S., Schmidt, M., Sonnentrucker, P., Stutzki, J., Teyssier, D., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Wang, S., Yorke, H.W., Yu, S., Zmuidzinas, J., Boogert, A., Erickson, N., Karpov, A., Kooi, J., Maiwald, F.W., Schieder, R., and Zaal, P.

Abstract

We present Herschel/HIFI observations of the fundamental rotational transitions of ortho- and para-H16 2 O and H18 2 O in absorption towards Sagittarius B2(M) and W31C. The ortho/para ratio in water in the foreground clouds on the line of sight towards these bright continuum sources is generally consistent with the statistical high-temperature ratio of 3, within the observational uncertainties. However, somewhat unexpectedly, we derive a low ortho/para ratio of 2.35±0.35, corresponding to a spin temperature of ∼27 K, towards Sagittarius B2(M) at velocities of the expanding molecular ring. Water molecules in this region appear to have formed with, or relaxed to, an ortho/para ratio close to the value corresponding to the local temperature of the gas and dust.

Published
2010

25. Herschel observations of EXtra-Ordinary Sources (HEXOS): The present and future of spectral surveys with Herschel/HIFI

Author

Bergin, E.A., Phillips , T.G., Comito, C., Crockett, N.R., Lis, D.C., Schilke, P., Wang, S., Bell, T.A., Blake, G.A., Bumble, B., Caux, E., Cabrit, S., Ceccarelli, C., Cernicharo, J., Daniel, F., de Graauw, Th., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Hartogh, P., Helmich, F.P., Herbst, E., Joblin, C., Johnstone, D., Kawamura, J.H., Langer, W.D., Latter, W.B., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Neufeld, D.A., Ossenkopf, V., Pagani, L., Pearson, J.C., Perault, M., Plume, R., Qin, S.-L., Roelfsema, P., Salez, M., Schlemmer, S., Stutzki, J., Tielens, A.G.G.M., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Yorke, H.W., Yu, S., Zmuidzinas, J., Bergin, E.A., Phillips , T.G., Comito, C., Crockett, N.R., Lis, D.C., Schilke, P., Wang, S., Bell, T.A., Blake, G.A., Bumble, B., Caux, E., Cabrit, S., Ceccarelli, C., Cernicharo, J., Daniel, F., de Graauw, Th., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Hartogh, P., Helmich, F.P., Herbst, E., Joblin, C., Johnstone, D., Kawamura, J.H., Langer, W.D., Latter, W.B., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Neufeld, D.A., Ossenkopf, V., Pagani, L., Pearson, J.C., Perault, M., Plume, R., Qin, S.-L., Roelfsema, P., Salez, M., Schlemmer, S., Stutzki, J., Tielens, A.G.G.M., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Yorke, H.W., Yu, S., and Zmuidzinas, J.

Abstract

We present initial results from the Herschel GT key program: Herschel observations of EXtra-Ordinary Sources (HEXOS) and outline the promise and potential of spectral surveys with Herschel/HIFI. The HIFI instrument offers unprecedented sensitivity, as well as continuous spectral coverage across the gaps imposed by the atmosphere, opening up a largely unexplored wavelength regime to high-resolution spectroscopy. We show the spectrum of Orion KL between 480 and 560 GHz and from 1.06 to 1.115 THz. From these data, we confirm that HIFI separately measures the dust continuum and spectrally resolves emission lines in Orion KL. Based on this capability we demonstrate that the line contribution to the broad-band continuum in this molecule-rich source is ∼20−40% below 1 THz and declines to a few percent at higher frequencies. We also tentatively identify multiple transitions of HD18O in the spectra. The first detection of this rare isotopologue in the interstellar medium suggests that HDO emission is optically thick in the Orion hot core with HDO/H2O ∼ 0.02. We discuss the implications of this detection for the water D/H ratio in hot cores.

Published
2010

26. Herschel/HIFI discovery of interstellar chloronium (H2Cl+)

Author

Lis, D.C., Pearson, J.C., Neufeld, D.A., Schilke, P., Muller, H.S.P., Gupta, H., Bell, T.A., Comito, C., Phillips , T.G., Bergin, E.A., Ceccarelli, C., Goldsmith, P.F., Blake, G.A., Bacmann, A., Baudry, A., Benedettini, M., Benz, A.O., Black, J., Boogert, A., Bottinelli, S., Cabrit, S., Caselli, P., Castets, A., Caux, E., Cernicharo, J., Codella, C., Coutens, A., Crimier, N., Crockett, N.R., Daniel, F., Demyk, K., Dominic, C., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Fuente, A., Gerin, M., Giesen, T.F., Goicoechea, J.R., Helmich, F., Hennebelle, P., Henning, Th., Herbst, E., Hily-Blant, P., Hjalmarson, A., Hollenbach, D., Jack, T., Joblin, C., Johnstone, D., Kahane, C., Kama, M., Kaufman, M., Klotz, A., Langer, W.D., Larsson, B., Le Bourlot, J., Lefloch, B., Le Petit, F., Li, D., Liseau, R., Lord, S.D., Lorenzani, A., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Murphy, J.Anthony, Nagy, Z., Nisini, B., Ossenkopf, V., Pacheco, S., Pagani, L., Parise, B., Perault, M., Plume, R., Qin, S.-L., Roueff, E., Salez, M., Sandqvist, A., Saraceno, P., Schlemmer, S., Schuster, K., Snell, R., Stutzki, J., Tielens, A., Trappe, Neil, van der Tak, F.F.S., van der Wiel, M., van Dishoeck, E.F., Vastel, C., Viti, S., Wakelam, V., Walters, A., Wang, S., Wyrowski, F., Yorke, H.W., Yu, S., Zmuidzinas, J., Delorme, Y., Desbat, J.-P., Gustens, R., Krieg, J.-M., Delforge, B., Lis, D.C., Pearson, J.C., Neufeld, D.A., Schilke, P., Muller, H.S.P., Gupta, H., Bell, T.A., Comito, C., Phillips , T.G., Bergin, E.A., Ceccarelli, C., Goldsmith, P.F., Blake, G.A., Bacmann, A., Baudry, A., Benedettini, M., Benz, A.O., Black, J., Boogert, A., Bottinelli, S., Cabrit, S., Caselli, P., Castets, A., Caux, E., Cernicharo, J., Codella, C., Coutens, A., Crimier, N., Crockett, N.R., Daniel, F., Demyk, K., Dominic, C., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Fuente, A., Gerin, M., Giesen, T.F., Goicoechea, J.R., Helmich, F., Hennebelle, P., Henning, Th., Herbst, E., Hily-Blant, P., Hjalmarson, A., Hollenbach, D., Jack, T., Joblin, C., Johnstone, D., Kahane, C., Kama, M., Kaufman, M., Klotz, A., Langer, W.D., Larsson, B., Le Bourlot, J., Lefloch, B., Le Petit, F., Li, D., Liseau, R., Lord, S.D., Lorenzani, A., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Murphy, J.Anthony, Nagy, Z., Nisini, B., Ossenkopf, V., Pacheco, S., Pagani, L., Parise, B., Perault, M., Plume, R., Qin, S.-L., Roueff, E., Salez, M., Sandqvist, A., Saraceno, P., Schlemmer, S., Schuster, K., Snell, R., Stutzki, J., Tielens, A., Trappe, Neil, van der Tak, F.F.S., van der Wiel, M., van Dishoeck, E.F., Vastel, C., Viti, S., Wakelam, V., Walters, A., Wang, S., Wyrowski, F., Yorke, H.W., Yu, S., Zmuidzinas, J., Delorme, Y., Desbat, J.-P., Gustens, R., Krieg, J.-M., and Delforge, B.

Abstract

We report the first detection of chloronium, H2Cl+, in the interstellar medium, using the HIFI instrument aboard the Herschel Space Observatory. The 212−101 lines of ortho-H35 2 Cl+ and ortho-H37 2 Cl+ are detected in absorption towards NGC 6334I, and the 111−000 transition of para-H35 2 Cl+ is detected in absorption towards NGC 6334I and Sgr B2(S). The H2Cl+ column densities are compared to those of the chemically-related species HCl. The derived HCl/H2Cl+ column density ratios, ∼1–10, are within the range predicted by models of diffuse and dense photon dominated regions (PDRs). However, the observed H2Cl+ column densities, in excess of 1013 cm−2, are significantly higher than the model predictions. Our observations demonstrate the outstanding spectroscopic capabilities of HIFI for detecting new interstellar molecules and providing key constraints for astrochemical models.

Published
2010

27. Herschel observations of ortho- and para-oxidaniumyl (H2O+) in spiral arm clouds toward Sagittarius B2(M)

Author

Schilke, P., Comito, C., Muller, H.S.P., Bergin, E.A., Herbst, E., Lis, D.C., Neufeld, D.A., Phillips , T.G., Bell, T.A., Blake, G.A., Cabrit, S., Caux, E., Ceccarelli, C., Cernicharo, J., Crockett, N.R., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Joblin, C., Johnstone, D., Langer, W.D., Latter, W.B., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Murphy, J.Anthony, Ossenkopf, V., Pagini, L., Pearson, J.C., Perault, M., Plume, R., Qin, S.-L., Salez, M., Schlemmer, S., Stutzki, J., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Wang, S., Yorke, H.W., Yu, S., Erickson, N., Maiwald, F.W., Kooi, J., Karpov, A., Zmuidzinas, J., Boogert, A., Schieder, R., Zaal, P., Schilke, P., Comito, C., Muller, H.S.P., Bergin, E.A., Herbst, E., Lis, D.C., Neufeld, D.A., Phillips , T.G., Bell, T.A., Blake, G.A., Cabrit, S., Caux, E., Ceccarelli, C., Cernicharo, J., Crockett, N.R., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Joblin, C., Johnstone, D., Langer, W.D., Latter, W.B., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Murphy, J.Anthony, Ossenkopf, V., Pagini, L., Pearson, J.C., Perault, M., Plume, R., Qin, S.-L., Salez, M., Schlemmer, S., Stutzki, J., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Wang, S., Yorke, H.W., Yu, S., Erickson, N., Maiwald, F.W., Kooi, J., Karpov, A., Zmuidzinas, J., Boogert, A., Schieder, R., and Zaal, P.

Abstract

H2O+ has been observed in its ortho- and para- states toward the massive star forming core Sgr B2(M), located close to the Galactic center. The observations show absorption in all spiral arm clouds between the Sun and Sgr B2. The average o/p ratio of H2O+ in most velocity intervals is 4.8, which corresponds to a nuclear spin temperature of 21 K. The relationship of this spin temperature to the formation temperature and current physical temperature of the gas hosting H2O+ is discussed, but no firm conclusion is reached. In the velocity interval 0–60 km s−1, an ortho/para ratio of below unity is found, but if this is due to an artifact of contamination by other species or real is not clear.

Published
2010

28. Herschel observations of EXtra-Ordinary Sources (HEXOS): Observations of H2O and its isotopologues towards Orion KL

Author

Melnick, G.J., Tolls, V., Neufeld, D.A., Bergin, E.A., Phillips , T.G., Wang, S., Crockett, N.R., Bell, T.A., Blake, G.A., Cabrit, S., Caux, E., Ceccarelli, C., Cernicharo, J., Comito, C., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Herbst, E., Joblin, C., Johnstone, D., Langer, W.D., Latter, W.D., Lis, D.C., Lord, S.D., Maret, S., Martin, P.G., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Ossenkopf, V., Pagani, L., Pearson, J.C., Perault, M., Plume, R., Qin, S.-L., Salez, M., Schilke, P., Schlemmer, S., Stutzki, J., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Yorke, H.W., Yu, S., Zmuidzinas, J., Melnick, G.J., Tolls, V., Neufeld, D.A., Bergin, E.A., Phillips , T.G., Wang, S., Crockett, N.R., Bell, T.A., Blake, G.A., Cabrit, S., Caux, E., Ceccarelli, C., Cernicharo, J., Comito, C., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Herbst, E., Joblin, C., Johnstone, D., Langer, W.D., Latter, W.D., Lis, D.C., Lord, S.D., Maret, S., Martin, P.G., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Ossenkopf, V., Pagani, L., Pearson, J.C., Perault, M., Plume, R., Qin, S.-L., Salez, M., Schilke, P., Schlemmer, S., Stutzki, J., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Yorke, H.W., Yu, S., and Zmuidzinas, J.

Abstract

We report the detection of more than 48 velocity-resolved ground rotational state transitions of H 16 2 O, H 18 2 O, and H 17 2 O – most for the first time – in both emission and absorption toward Orion KL using Herschel/HIFI. We show that a simple fit, constrained to match the known emission and absorption components along the line of sight, is in excellent agreement with the spectral profiles of all the water lines. Using the measured H 18 2 O line fluxes, which are less affected by line opacity than their H 16 2 O counterparts, and an escape probability method, the column densities of H 18 2 O associated with each emission component are derived. We infer total water abundances of 7.4 × 10−5, 1.0× 10−5, and 1.6 × 10−5 for the plateau, hot core, and extended warm gas, respectively. In the case of the plateau, this value is consistent with previous measures of the Orion-KL water abundance as well as those of other molecular outflows. In the case of the hot core and extended warm gas, these values are somewhat higher than water abundances derived for other quiescent clouds, suggesting that these regions are likely experiencing enhanced water-ice sublimation from (and reduced freeze-out onto) grain surfaces due to the warmer dust in these sources.

Published
2010

29. Herschel observations of EXtra-Ordinary Sources (HEXOS): The Terahertz spectrum of Orion KL seen at high spectral resolution

Author

Crockett, N.R., Bergin, E.A., Wang, S., Lis, D.C., Bell, T.A., Blake, G.A., Boogert, A., Bumble, B., Cabrit, S., Caux, E., Ceccarelli, C., Cernicharo, J., Comito, C., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Gusten, R., Hartogh, P., Helmich, F., Herbst, E., Honingh, E., Joblin, C., Johnstone, D., Karpov, A., Kawamura, J., Kooi, J., Krieg, J.-M., Langer, W., Latter, W.B., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Neufeld, D.A., Ossenkopf, V., Pearson, J.C., Perault, M., Phillips , T.G., Plume, R., Qin, S.-L., Roelfsema, P.R., Schieder, R., Schilke, P., Schlemmer, S., Stutzki, J., van der Tak, F.F.S., Tielens, A., Trappe, Neil, Vastel, C., Yorke, H.W., Yu, S., Zmuidzinas, J., Crockett, N.R., Bergin, E.A., Wang, S., Lis, D.C., Bell, T.A., Blake, G.A., Boogert, A., Bumble, B., Cabrit, S., Caux, E., Ceccarelli, C., Cernicharo, J., Comito, C., Daniel, F., Dubernet, M.-L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Gupta, H., Gusten, R., Hartogh, P., Helmich, F., Herbst, E., Honingh, E., Joblin, C., Johnstone, D., Karpov, A., Kawamura, J., Kooi, J., Krieg, J.-M., Langer, W., Latter, W.B., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Neufeld, D.A., Ossenkopf, V., Pearson, J.C., Perault, M., Phillips , T.G., Plume, R., Qin, S.-L., Roelfsema, P.R., Schieder, R., Schilke, P., Schlemmer, S., Stutzki, J., van der Tak, F.F.S., Tielens, A., Trappe, Neil, Vastel, C., Yorke, H.W., Yu, S., and Zmuidzinas, J.

Abstract

We present the first high spectral resolution observations of Orion KL in the frequency ranges 1573.4–1702.8 GHz (band 6b) and 1788.4–1906.8 GHz (band 7b) obtained using the HIFI instrument on board the Herschel Space Observatory. We characterize the main emission lines found in the spectrum, which primarily arise from a range of components associated with Orion KL including the hot core, but also see widespread emission from components associated with molecular outflows traced by H2O, SO2, and OH. We find that the density of observed emission lines is significantly diminished in these bands compared to lower frequency Herschel/HIFI bands.

Published
2010

30. Herschel observations of EXtra-Ordinary Sources (HEXOS): Detection of hydrogen fluoride in absorption towards Orion KL

Author

Phillips , T.G., Bergin, E.A., Lis, D.C., Neufeld, D.A., Bell, T.A., Wang, S., Crockett, N.R., Emprechtinger, M., Blake, G.A., Caux, E., Ceccarelli, C., Cernicharo, J., Comito, C., Daniel, F., Dubernet, M.-L., Encrenaz, P., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Herbst, E., Joblin, C., Johnstone, D., Langer, W.D., Latter, W.D., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Ossenkopf, V., Pearson, J.C., Perault, M., Plume, R., Qin, S.-L., Schilke, P., Schlemmer, S., Stutzki, J., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Yorke, H.W., Yu, S., Zmuidzinas, J., Boogert, A., Gusten, R., Hartogh, P., Honingh, N., Kooi, J., Karpov, A., Krieg, J.-M., Schieder, R., Phillips , T.G., Bergin, E.A., Lis, D.C., Neufeld, D.A., Bell, T.A., Wang, S., Crockett, N.R., Emprechtinger, M., Blake, G.A., Caux, E., Ceccarelli, C., Cernicharo, J., Comito, C., Daniel, F., Dubernet, M.-L., Encrenaz, P., Gerin, M., Giesen, T.F., Goicoechea, J.R., Goldsmith, P.F., Herbst, E., Joblin, C., Johnstone, D., Langer, W.D., Latter, W.D., Lord, S.D., Maret, S., Martin, P.G., Melnick, G.J., Menten, K.M., Morris, P., Muller, H.S.P., Murphy, J.Anthony, Ossenkopf, V., Pearson, J.C., Perault, M., Plume, R., Qin, S.-L., Schilke, P., Schlemmer, S., Stutzki, J., Trappe, Neil, van der Tak, F.F.S., Vastel, C., Yorke, H.W., Yu, S., Zmuidzinas, J., Boogert, A., Gusten, R., Hartogh, P., Honingh, N., Kooi, J., Karpov, A., Krieg, J.-M., and Schieder, R.

Abstract

We report a detection of the fundamental rotational transition of hydrogen fluoride in absorption towards Orion KL using Herschel/HIFI. After the removal of contaminating features associated with common molecules (“weeds”), the HF spectrum shows a P-Cygni profile, with weak redshifted emission and strong blue-shifted absorption, associated with the low-velocity molecular outflow. We derive an estimate of 2.9 × 1013 cm−2 for the HF column density responsible for the broad absorption component. Using our best estimate of the H2 column density within the low-velocity molecular outflow, we obtain a lower limit of ∼1.6 × 10−10 for the HF abundance relative to hydrogen nuclei, corresponding to ∼0.6% of the solar abundance of fluorine. This value is close to that inferred from previous ISO observations of HF J = 2−1 absorption towards Sgr B2, but is in sharp contrast to the lower limit of 6 × 10−9 derived by Neufeld et al. for cold, foreground clouds on the line of sight towards G10.6-0.4.

Published
2010

32. Dimethyl ether in its ground state,v= 0, and lowest two torsionally excited states,v11 = 1 andv15 = 1, in the high-mass star-forming region G327.3-0.6

Author

Bisschop, S. E., primary, Schilke, P., additional, Wyrowski, F., additional, Belloche, A., additional, Brinch, C., additional, Endres, C. P., additional, Güsten, R., additional, Hafok, H., additional, Heyminck, S., additional, Jørgensen, J. K., additional, Müller, H. S. P., additional, Menten, K. M., additional, Rolffs, R., additional, and Schlemmer, S., additional

Published
2013
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34. Herschelobservations of EXtra-Ordinary Sources (HEXOS): Methanol as a probe of physical conditions in Orion KL

Author

Wang, S., primary, Bergin, E. A., additional, Crockett, N. R., additional, Goldsmith, P. F., additional, Lis, D. C., additional, Pearson, J. C., additional, Schilke, P., additional, Bell, T. A., additional, Comito, C., additional, Blake, G. A., additional, Caux, E., additional, Ceccarelli, C., additional, Cernicharo, J., additional, Daniel, F., additional, Dubernet, M.-L., additional, Emprechtinger, M., additional, Encrenaz, P., additional, Gerin, M., additional, Giesen, T. F., additional, Goicoechea, J. R., additional, Gupta, H., additional, Herbst, E., additional, Joblin, C., additional, Johnstone, D., additional, Langer, W. D., additional, Latter, W. B., additional, Lord, S. D., additional, Maret, S., additional, Martin, P. G., additional, Melnick, G. J., additional, Menten, K. M., additional, Morris, P., additional, Müller, H. S. P., additional, Murphy, J. A., additional, Neufeld, D. A., additional, Ossenkopf, V., additional, Pérault, M., additional, Phillips, T. G., additional, Plume, R., additional, Qin, S.-L., additional, Schlemmer, S., additional, Stutzki, J., additional, Trappe, N., additional, van der Tak, F. F. S., additional, Vastel, C., additional, Yorke, H. W., additional, Yu, S., additional, and Zmuidzinas, J., additional

Published
2011
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36. Herschel/HIFI measurements of the ortho/para ratio in water towards Sagittarius B2(M) and W31C

Author

Lis, D. C., primary, Phillips, T. G., additional, Goldsmith, P. F., additional, Neufeld, D. A., additional, Herbst, E., additional, Comito, C., additional, Schilke, P., additional, Müller, H. S. P., additional, Bergin, E. A., additional, Gerin, M., additional, Bell, T. A., additional, Emprechtinger, M., additional, Black, J. H., additional, Blake, G. A., additional, Boulanger, F., additional, Caux, E., additional, Ceccarelli, C., additional, Cernicharo, J., additional, Coutens, A., additional, Crockett, N. R., additional, Daniel, F., additional, Dartois, E., additional, De Luca, M., additional, Dubernet, M.-L., additional, Encrenaz, P., additional, Falgarone, E., additional, Geballe, T. R., additional, Godard, B., additional, Giesen, T. F., additional, Goicoechea, J. R., additional, Gry, C., additional, Gupta, H., additional, Hennebelle, P., additional, Hily-Blant, P., additional, Kołos, R., additional, Krełowski, J., additional, Joblin, C., additional, Johnstone, D., additional, Kaźmierczak, M., additional, Lord, S. D., additional, Maret, S., additional, Martin, P. G., additional, Martín-Pintado, J., additional, Melnick, G. J., additional, Menten, K. M., additional, Monje, R., additional, Mookerjea, B., additional, Morris, P., additional, Murphy, J. A., additional, Ossenkopf, V., additional, Pearson, J. C., additional, Pérault, M., additional, Persson, C., additional, Plume, R., additional, Qin, S.-L., additional, Salez, M., additional, Schlemmer, S., additional, Schmidt, M., additional, Sonnentrucker, P., additional, Stutzki, J., additional, Teyssier, D., additional, Trappe, N., additional, van der Tak, F. F. S., additional, Vastel, C., additional, Wang, S., additional, Yorke, H. W., additional, Yu, S., additional, Zmuidzinas, J., additional, Boogert, A., additional, Erickson, N., additional, Karpov, A., additional, Kooi, J., additional, Maiwald, F. W., additional, Schieder, R., additional, and Zaal, P., additional

Published
2010
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37. Detection of hydrogen fluoride absorption in diffuse molecular clouds withHerschel/HIFI: an ubiquitous tracer of molecular gas

Author

Sonnentrucker, P., primary, Neufeld, D. A., additional, Phillips, T. G., additional, Gerin, M., additional, Lis, D. C., additional, De Luca, M., additional, Goicoechea, J. R., additional, Black, J. H., additional, Bell, T. A., additional, Boulanger, F., additional, Cernicharo, J., additional, Coutens, A., additional, Dartois, E., additional, Kaźmierczak, M., additional, Encrenaz, P., additional, Falgarone, E., additional, Geballe, T. R., additional, Giesen, T., additional, Godard, B., additional, Goldsmith, P. F., additional, Gry, C., additional, Gupta, H., additional, Hennebelle, P., additional, Herbst, E., additional, Hily-Blant, P., additional, Joblin, C., additional, Kołos, R., additional, Krełowski, J., additional, Martín-Pintado, J., additional, Menten, K. M., additional, Monje, R., additional, Mookerjea, B., additional, Pearson, J., additional, Perault, M., additional, Persson, C. M., additional, Plume, R., additional, Salez, M., additional, Schlemmer, S., additional, Schmidt, M., additional, Stutzki, J., additional, Teyssier, D., additional, Vastel, C., additional, Yu, S., additional, Caux, E., additional, Güsten, R., additional, Hatch, W. A., additional, Klein, T., additional, Mehdi, I., additional, Morris, P., additional, and Ward, J. S., additional

Published
2010
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38. Herschel/HIFI observations of interstellar OH+and H2O+towards W49N: a probe of diffuse clouds with a small molecular fraction

Author

Neufeld, D. A., primary, Goicoechea, J. R., additional, Sonnentrucker, P., additional, Black, J. H., additional, Pearson, J., additional, Yu, S., additional, Phillips, T. G., additional, Lis, D. C., additional, De Luca, M., additional, Herbst, E., additional, Rimmer, P., additional, Gerin, M., additional, Bell, T. A., additional, Boulanger, F., additional, Cernicharo, J., additional, Coutens, A., additional, Dartois, E., additional, Kazmierczak, M., additional, Encrenaz, P., additional, Falgarone, E., additional, Geballe, T. R., additional, Giesen, T., additional, Godard, B., additional, Goldsmith, P. F., additional, Gry, C., additional, Gupta, H., additional, Hennebelle, P., additional, Hily-Blant, P., additional, Joblin, C., additional, Kołos, R., additional, Krełowski, J., additional, Martín-Pintado, J., additional, Menten, K. M., additional, Monje, R., additional, Mookerjea, B., additional, Perault, M., additional, Persson, C., additional, Plume, R., additional, Salez, M., additional, Schlemmer, S., additional, Schmidt, M., additional, Stutzki, J., additional, Teyssier, D., additional, Vastel, C., additional, Cros, A., additional, Klein, K., additional, Lorenzani, A., additional, Philipp, S., additional, Samoska, L. A., additional, Shipman, R., additional, Tielens, A. G. G. M., additional, Szczerba, R., additional, and Zmuidzinas, J., additional

Published
2010
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39. Detection of OH+and H2O+towards Orion KL

Author

Gupta, H., primary, Rimmer, P., additional, Pearson, J. C., additional, Yu, S., additional, Herbst, E., additional, Harada, N., additional, Bergin, E. A., additional, Neufeld, D. A., additional, Melnick, G. J., additional, Bachiller, R., additional, Baechtold, W., additional, Bell, T. A., additional, Blake, G. A., additional, Caux, E., additional, Ceccarelli, C., additional, Cernicharo, J., additional, Chattopadhyay, G., additional, Comito, C., additional, Cabrit, S., additional, Crockett, N. R., additional, Daniel, F., additional, Falgarone, E., additional, Diez-Gonzalez, M. C., additional, Dubernet, M.-L., additional, Erickson, N., additional, Emprechtinger, M., additional, Encrenaz, P., additional, Gerin, M., additional, Gill, J. J., additional, Giesen, T. F., additional, Goicoechea, J. R., additional, Goldsmith, P. F., additional, Joblin, C., additional, Johnstone, D., additional, Langer, W. D., additional, Larsson, B., additional, Latter, W. B., additional, Lin, R. H., additional, Lis, D. C., additional, Liseau, R., additional, Lord, S. D., additional, Maiwald, F. W., additional, Maret, S., additional, Martin, P. G., additional, Martin-Pintado, J., additional, Menten, K. M., additional, Morris, P., additional, Müller, H. S. P., additional, Murphy, J. A., additional, Nordh, L. H., additional, Olberg, M., additional, Ossenkopf, V., additional, Pagani, L., additional, Pérault, M., additional, Phillips, T. G., additional, Plume, R., additional, Qin, S.-L., additional, Salez, M., additional, Samoska, L. A., additional, Schilke, P., additional, Schlecht, E., additional, Schlemmer, S., additional, Szczerba, R., additional, Stutzki, J., additional, Trappe, N., additional, van der Tak, F. F. S., additional, Vastel, C., additional, Wang, S., additional, Yorke, H. W., additional, Zmuidzinas, J., additional, Boogert, A., additional, Güsten, R., additional, Hartogh, P., additional, Honingh, N., additional, Karpov, A., additional, Kooi, J., additional, Krieg, J.-M., additional, Schieder, R., additional, and Zaal, P., additional

Published
2010
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40. CH+(1–0) and13CH+(1–0) absorption lines in the direction of massive star-forming regions

Author

Falgarone, E., primary, Godard, B., additional, Cernicharo, J., additional, De Luca, M., additional, Gerin, M., additional, Phillips, T. G., additional, Black, J. H., additional, Lis, D. C., additional, Bell, T. A., additional, Boulanger, F., additional, Coutens, A., additional, Dartois, E., additional, Encrenaz, P., additional, Giesen, T., additional, Goicoechea, J. R., additional, Goldsmith, P. F., additional, Gupta, H., additional, Gry, C., additional, Hennebelle, P., additional, Herbst, E., additional, Hily-Blant, P., additional, Joblin, C., additional, Kaźmierczak, M., additional, Kołos, R., additional, Krełowski, J., additional, Martin-Pintado, J., additional, Monje, R., additional, Mookerjea, B., additional, Neufeld, D. A., additional, Perault, M., additional, Pearson, J. C., additional, Persson, C., additional, Plume, R., additional, Salez, M., additional, Schmidt, M., additional, Sonnentrucker, P., additional, Stutzki, J., additional, Teyssier, D., additional, Vastel, C., additional, Yu, S., additional, Menten, K., additional, Geballe, T. R., additional, Schlemmer, S., additional, Shipman, R., additional, Tielens, A. G. G. M., additional, Philipp, S., additional, Cros, A., additional, Zmuidzinas, J., additional, Samoska, L. A., additional, Klein, K., additional, Lorenzani, A., additional, Szczerba, R., additional, Péron, I., additional, Cais, P., additional, Gaufre, P., additional, Ravera, L., additional, Morris, P., additional, Lord, S., additional, and Planesas, P., additional

Published
2010
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41. Herschelobservations of EXtra-Ordinary Sources (HEXOS): The present and future of spectral surveys withHerschel/HIFI

Author

Bergin, E. A., primary, Phillips, T. G., additional, Comito, C., additional, Crockett, N. R., additional, Lis, D. C., additional, Schilke, P., additional, Wang, S., additional, Bell, T. A., additional, Blake, G. A., additional, Bumble, B., additional, Caux, E., additional, Cabrit, S., additional, Ceccarelli, C., additional, Cernicharo, J., additional, Daniel, F., additional, de Graauw, Th., additional, Dubernet, M.-L., additional, Emprechtinger, M., additional, Encrenaz, P., additional, Falgarone, E., additional, Gerin, M., additional, Giesen, T. F., additional, Goicoechea, J. R., additional, Goldsmith, P. F., additional, Gupta, H., additional, Hartogh, P., additional, Helmich, F. P., additional, Herbst, E., additional, Joblin, C., additional, Johnstone, D., additional, Kawamura, J. H., additional, Langer, W. D., additional, Latter, W. B., additional, Lord, S. D., additional, Maret, S., additional, Martin, P. G., additional, Melnick, G. J., additional, Menten, K. M., additional, Morris, P., additional, Müller, H. S. P., additional, Murphy, J. A., additional, Neufeld, D. A., additional, Ossenkopf, V., additional, Pagani, L., additional, Pearson, J. C., additional, Pérault, M., additional, Plume, R., additional, Roelfsema, P., additional, Qin, S.-L., additional, Salez, M., additional, Schlemmer, S., additional, Stutzki, J., additional, Tielens, A. G. G. M., additional, Trappe, N., additional, van der Tak, F. F. S., additional, Vastel, C., additional, Yorke, H. W., additional, Yu, S., additional, and Zmuidzinas, J., additional

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2010
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42. Nitrogen hydrides in interstellar gas

Author

Persson, C. M., primary, Black, J. H., additional, Cernicharo, J., additional, Goicoechea, J. R., additional, Hassel, G. E., additional, Herbst, E., additional, Gerin, M., additional, De Luca, M., additional, Bell, T. A., additional, Coutens, A., additional, Falgarone, E., additional, Goldsmith, P. F., additional, Gupta, H., additional, Kaźmierczak, M., additional, Lis, D. C., additional, Mookerjea, B., additional, Neufeld, D. A., additional, Pearson, J., additional, Phillips, T. G., additional, Sonnentrucker, P., additional, Stutzki, J., additional, Vastel, C., additional, Yu, S., additional, Boulanger, F., additional, Dartois, E., additional, Encrenaz, P., additional, Geballe, T. R., additional, Giesen, T., additional, Godard, B., additional, Gry, C., additional, Hennebelle, P., additional, Hily-Blant, P., additional, Joblin, C., additional, Kołos, R., additional, Krełowski, J., additional, Martín-Pintado, J., additional, Menten, K., additional, Monje, R., additional, Perault, M., additional, Plume, R., additional, Salez, M., additional, Schlemmer, S., additional, Schmidt, M., additional, Teyssier, D., additional, Péron, I., additional, Cais, P., additional, Gaufre, P., additional, Cros, A., additional, Ravera, L., additional, Morris, P., additional, Lord, S., additional, and Planesas, P., additional

Published
2010
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43. Excitation and abundance of C3in star forming cores

Author

Mookerjea, B., primary, Giesen, T., additional, Stutzki, J., additional, Cernicharo, J., additional, Goicoechea, J. R., additional, De Luca, M., additional, Bell, T. A., additional, Gupta, H., additional, Gerin, M., additional, Persson, C. M., additional, Sonnentrucker, P., additional, Makai, Z., additional, Black, J., additional, Boulanger, F., additional, Coutens, A., additional, Dartois, E., additional, Encrenaz, P., additional, Falgarone, E., additional, Geballe, T., additional, Godard, B., additional, Goldsmith, P. F., additional, Gry, C., additional, Hennebelle, P., additional, Herbst, E., additional, Hily-Blant, P., additional, Joblin, C., additional, Kaźmierczak, M., additional, Kołos, R., additional, Krełowski, J., additional, Lis, D. C., additional, Martin-Pintado, J., additional, Menten, K. M., additional, Monje, R., additional, Pearson, J. C., additional, Perault, M., additional, Phillips, T. G., additional, Plume, R., additional, Salez, M., additional, Schlemmer, S., additional, Schmidt, M., additional, Teyssier, D., additional, Vastel, C., additional, Yu, S., additional, Dieleman, P., additional, Güsten, R., additional, Honingh, C. E., additional, Morris, P., additional, Roelfsema, P., additional, Schieder, R., additional, Tielens, A. G. G. M., additional, and Zmuidzinas, J., additional

Published
2010
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44. Herschelobservations of ortho- and para-oxidaniumyl (H2O+) in spiral arm clouds toward Sagittarius B2(M)

Author

Schilke, P., primary, Comito, C., additional, Müller, H. S. P., additional, Bergin, E. A., additional, Herbst, E., additional, Lis, D. C., additional, Neufeld, D. A., additional, Phillips, T. G., additional, Bell, T. A., additional, Blake, G. A., additional, Cabrit, S., additional, Caux, E., additional, Ceccarelli, C., additional, Cernicharo, J., additional, Crockett, N. R., additional, Daniel, F., additional, Dubernet, M.-L., additional, Emprechtinger, M., additional, Encrenaz, P., additional, Falgarone, E., additional, Gerin, M., additional, Giesen, T. F., additional, Goicoechea, J. R., additional, Goldsmith, P. F., additional, Gupta, H., additional, Joblin, C., additional, Johnstone, D., additional, Langer, W. D., additional, Latter, W. B., additional, Lord, S. D., additional, Maret, S., additional, Martin, P. G., additional, Melnick, G. J., additional, Menten, K. M., additional, Morris, P., additional, Murphy, J. A., additional, Ossenkopf, V., additional, Pagani, L., additional, Pearson, J. C., additional, Pérault, M., additional, Plume, R., additional, Qin, S.-L., additional, Salez, M., additional, Schlemmer, S., additional, Stutzki, J., additional, Trappe, N., additional, van der Tak, F. F. S., additional, Vastel, C., additional, Wang, S., additional, Yorke, H. W., additional, Yu, S., additional, Erickson, N., additional, Maiwald, F. W., additional, Kooi, J., additional, Karpov, A., additional, Zmuidzinas, J., additional, Boogert, A., additional, Schieder, R., additional, and Zaal, P., additional

Published
2010
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45. Herschelobservations of EXtra-Ordinary Sources (HEXOS): The Terahertz spectrum of Orion KL seen at high spectral resolution

Author

Crockett, N. R., primary, Bergin, E. A., additional, Wang, S., additional, Lis, D. C., additional, Bell, T. A., additional, Blake, G. A., additional, Boogert, A., additional, Bumble, B., additional, Cabrit, S., additional, Caux, E., additional, Ceccarelli, C., additional, Cernicharo, J., additional, Comito, C., additional, Daniel, F., additional, Dubernet, M.-L., additional, Emprechtinger, M., additional, Encrenaz, P., additional, Falgarone, E., additional, Gerin, M., additional, Giesen, T. F., additional, Goicoechea, J. R., additional, Goldsmith, P. F., additional, Gupta, H., additional, Güsten, R., additional, Hartogh, P., additional, Helmich, F., additional, Herbst, E., additional, Honingh, N., additional, Joblin, C., additional, Johnstone, D., additional, Karpov, A., additional, Kawamura, J. H., additional, Kooi, J., additional, Krieg, J.-M., additional, Langer, W. D., additional, Latter, W. D., additional, Lord, S. D., additional, Maret, S., additional, Martin, P. G., additional, Melnick, G. J., additional, Menten, K. M., additional, Morris, P., additional, Müller, H. S. P., additional, Murphy, J. A., additional, Neufeld, D. A., additional, Ossenkopf, V., additional, Pearson, J. C., additional, Pérault, M., additional, Phillips, T. G., additional, Plume, R., additional, Qin, S.-L., additional, Roelfsema, P., additional, Schieder, R., additional, Schilke, P., additional, Schlemmer, S., additional, Stutzki, J., additional, van der Tak, F. F. S., additional, Tielens, A., additional, Trappe, N., additional, Vastel, C., additional, Yorke, H. W., additional, Yu, S., additional, and Zmuidzinas, J., additional

Published
2010
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46. Interstellar CH absorption in the diffuse interstellar medium along the sight-lines to G10.6–0.4 (W31C), W49N, and W51

Author

Gerin, M., primary, De Luca, M., additional, Goicoechea, J. R., additional, Herbst, E., additional, Falgarone, E., additional, Godard, B., additional, Bell, T. A., additional, Coutens, A., additional, Kaźmierczak, M., additional, Sonnentrucker, P., additional, Black, J. H., additional, Neufeld, D. A., additional, Phillips, T. G., additional, Pearson, J., additional, Rimmer, P. B., additional, Hassel, G., additional, Lis, D. C., additional, Vastel, C., additional, Boulanger, F., additional, Cernicharo, J., additional, Dartois, E., additional, Encrenaz, P., additional, Giesen, T., additional, Goldsmith, P. F., additional, Gupta, H., additional, Gry, C., additional, Hennebelle, P., additional, Hily-Blant, P., additional, Joblin, C., additional, Kołos, R., additional, Krełowski, J., additional, Martín-Pintado, J., additional, Monje, R., additional, Mookerjea, B., additional, Perault, M., additional, Persson, C., additional, Plume, R., additional, Salez, M., additional, Schmidt, M., additional, Stutzki, J., additional, Teyssier, D., additional, Yu, S., additional, Contursi, A., additional, Menten, K., additional, Geballe, T. R., additional, Schlemmer, S., additional, Morris, P., additional, Hatch, W. A., additional, Imram, M., additional, Ward, J. S., additional, Caux, E., additional, Güsten, R., additional, Klein, T., additional, Roelfsema, P., additional, Dieleman, P., additional, Schieder, R., additional, Honingh, N., additional, and Zmuidzinas, J., additional

Published
2010
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47. Herschelobservations of EXtra-Ordinary Sources (HEXOS): detecting spiral arm clouds by CH absorption lines

Author

Qin, S.-L., primary, Schilke, P., additional, Comito, C., additional, Möller, T., additional, Rolffs, R., additional, Müller, H. S. P., additional, Belloche, A., additional, Menten, K. M., additional, Lis, D. C., additional, Phillips, T. G., additional, Bergin, E. A., additional, Bell, T. A., additional, Crockett, N. R., additional, Blake, G. A., additional, Cabrit, S., additional, Caux, E., additional, Ceccarelli, C., additional, Cernicharo, J., additional, Daniel, F., additional, Dubernet, M.-L., additional, Emprechtinger, M., additional, Encrenaz, P., additional, Falgarone, E., additional, Gerin, M., additional, Giesen, T. F., additional, Goicoechea, J. R., additional, Goldsmith, P. F., additional, Gupta, H., additional, Herbst, E., additional, Joblin, C., additional, Johnstone, D., additional, Langer, W. D., additional, Lord, S. D., additional, Maret, S., additional, Martin, P. G., additional, Melnick, G. J., additional, Morris, P., additional, Murphy, J. A., additional, Neufeld, D. A., additional, Ossenkopf, V., additional, Pagani, L., additional, Pearson, J. C., additional, Pérault, M., additional, Plume, R., additional, Salez, M., additional, Schlemmer, S., additional, Stutzki, J., additional, Trappe, N., additional, van der Tak, F. F. S., additional, Vastel, C., additional, Wang, S., additional, Yorke, H. W., additional, Yu, S., additional, Zmuidzinas, J., additional, Boogert, A., additional, Güsten, R., additional, Hartogh, P., additional, Honingh, N., additional, Karpov, A., additional, Kooi, J., additional, Krieg, J.-M., additional, Schieder, R., additional, Diez-Gonzalez, M. C., additional, Bachiller, R., additional, Martin-Pintado, J., additional, Baechtold, W., additional, Olberg, M., additional, Nordh, L. H., additional, Gill, J. L., additional, and Chattopadhyay, G., additional

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2010
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48. Herschelobservations of deuterated water towards Sgr B2(M)

Author

Comito, C., primary, Schilke, P., additional, Rolffs, R., additional, Lis, D. C., additional, Belloche, A., additional, Bergin, E. A., additional, Phillips, T. G., additional, Bell, T. A., additional, Crockett, N. R., additional, Wang, S., additional, Blake, G. A., additional, Caux, E., additional, Ceccarelli, C., additional, Cernicharo, J., additional, Daniel, F., additional, Dubernet, M.-L., additional, Emprechtinger, M., additional, Encrenaz, P., additional, Gerin, M., additional, Giesen, T. F., additional, Goicoechea, J. R., additional, Goldsmith, P. F., additional, Gupta, H., additional, Herbst, E., additional, Joblin, C., additional, Johnstone, D., additional, Langer, W. D., additional, Latter, W. D., additional, Lord, S. D., additional, Maret, S., additional, Martin, P. G., additional, Melnick, G. J., additional, Menten, K. M., additional, Morris, P., additional, Müller, H. S. P., additional, Murphy, J. A., additional, Neufeld, D. A., additional, Ossenkopf, V., additional, Pearson, J. C., additional, Pérault, M., additional, Plume, R., additional, Qin, S.-L., additional, Schlemmer, S., additional, Stutzki, J., additional, Trappe, N., additional, van der Tak, F. F. S., additional, Vastel, C., additional, Yorke, H. W., additional, Yu, S., additional, Olberg, M., additional, Szczerba, R., additional, Larsson, B., additional, Liseau, R., additional, Lin, R. H., additional, Samoska, L. A., additional, and Schlecht, E., additional

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2010
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49. Herschelobservations of EXtra-Ordinary Sources (HEXOS): Observations of H2O and its isotopologues towards Orion KL

Author

Melnick, G. J., primary, Tolls, V., additional, Neufeld, D. A., additional, Bergin, E. A., additional, Phillips, T. G., additional, Wang, S., additional, Crockett, N. R., additional, Bell, T. A., additional, Blake, G. A., additional, Cabrit, S., additional, Caux, E., additional, Ceccarelli, C., additional, Cernicharo, J., additional, Comito, C., additional, Daniel, F., additional, Dubernet, M.-L., additional, Emprechtinger, M., additional, Encrenaz, P., additional, Falgarone, E., additional, Gerin, M., additional, Giesen, T. F., additional, Goicoechea, J. R., additional, Goldsmith, P. F., additional, Herbst, E., additional, Joblin, C., additional, Johnstone, D., additional, Langer, W. D., additional, Latter, W. D., additional, Lis, D. C., additional, Lord, S. D., additional, Maret, S., additional, Martin, P. G., additional, Menten, K. M., additional, Morris, P., additional, Müller, H. S. P., additional, Murphy, J. A., additional, Ossenkopf, V., additional, Pagani, L., additional, Pearson, J. C., additional, Pérault, M., additional, Plume, R., additional, Qin, S.-L., additional, Salez, M., additional, Schilke, P., additional, Schlemmer, S., additional, Stutzki, J., additional, Trappe, N., additional, van der Tak, F. F. S., additional, Vastel, C., additional, Yorke, H. W., additional, Yu, S., additional, and Zmuidzinas, J., additional

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2010
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50. Reversal of infall in SgrB2(M) revealed byHerschel/HIFI observations of HCN lines at THz frequencies

Author

Rolffs, R., primary, Schilke, P., additional, Comito, C., additional, Bergin, E. A., additional, van der Tak, F. F. S., additional, Lis, D. C., additional, Qin, S.-L., additional, Menten, K. M., additional, Güsten, R., additional, Bell, T. A., additional, Blake, G. A., additional, Caux, E., additional, Ceccarelli, C., additional, Cernicharo, J., additional, Crockett, N. R., additional, Daniel, F., additional, Dubernet, M.-L., additional, Emprechtinger, M., additional, Encrenaz, P., additional, Gerin, M., additional, Giesen, T. F., additional, Goicoechea, J. R., additional, Goldsmith, P. F., additional, Gupta, H., additional, Herbst, E., additional, Joblin, C., additional, Johnstone, D., additional, Langer, W. D., additional, Latter, W. D., additional, Lord, S. D., additional, Maret, S., additional, Martin, P. G., additional, Melnick, G. J., additional, Morris, P., additional, Müller, H. S. P., additional, Murphy, J. A., additional, Ossenkopf, V., additional, Pearson, J. C., additional, Pérault, M., additional, Phillips, T. G., additional, Plume, R., additional, Schlemmer, S., additional, Stutzki, J., additional, Trappe, N., additional, Vastel, C., additional, Wang, S., additional, Yorke, H. W., additional, Yu, S., additional, Zmuidzinas, J., additional, Diez-Gonzalez, M. C., additional, Bachiller, R., additional, Martin-Pintado, J., additional, Baechtold, W., additional, Olberg, M., additional, Nordh, L. H., additional, Gill, J. J., additional, and Chattopadhyay, G., additional

Published
2010
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