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14 results on '"Beltran, M.T."'

1. Fragmentation in the massive G31.41+0.31 protocluster

Author

Beltran, M.T., Rivilla, V.M., Cesaroni, R., Maud, L.T., Galli, D., Moscadelli, L., Goddi, C., Vig, S., Zinnecker, H., Beltran, M.T., Rivilla, V.M., Cesaroni, R., Maud, L.T., Galli, D., Moscadelli, L., Goddi, C., Vig, S., and Zinnecker, H.

Abstract

Contains fulltext : 233406.pdf (Publisher’s version ) (Open Access)

Published
2021

2. Fragmentation in the massive G31.41+0.31 protocluster

Author

Beltran, M.T., Rivilla, V.M., Cesaroni, R., Maud, L.T., Galli, D., Moscadelli, L., Goddi, C., Vig, S., Zinnecker, H., Beltran, M.T., Rivilla, V.M., Cesaroni, R., Maud, L.T., Galli, D., Moscadelli, L., Goddi, C., Vig, S., and Zinnecker, H.

Abstract

Contains fulltext : 233406.pdf (Publisher’s version ) (Open Access)

Published
2021

3. Fragmentation in the massive G31.41+0.31 protocluster

Author

Beltran, M.T., Rivilla, V.M., Cesaroni, R., Maud, L.T., Galli, D., Moscadelli, L., Goddi, C., Vig, S., Zinnecker, H., Beltran, M.T., Rivilla, V.M., Cesaroni, R., Maud, L.T., Galli, D., Moscadelli, L., Goddi, C., Vig, S., and Zinnecker, H.

Abstract

Contains fulltext : 233406.pdf (Publisher’s version ) (Open Access)

Published
2021

4. SEDIGISM-ATLASGAL: Dense Gas Fraction and Star Formation Efficiency Across the Galactic Disk

Author

Urquhart, J.S., Figura, C., Cross, J.R., Wells, M.R.A., Moore, T.J.T., Eden, D.J., Ragan, S.E., Pettitt, A.R., Duarte-Cabral, A., Colombo, D., Schuller, F., Csengeri, T., Mattern, M., Beuther, H., Menten, K.M., Wyrowski, F., Anderson, L.D., Barnes, P.J., Beltran, M.T., Billington, S.J., Bronfman, L., Giannetti, A., Kainulainen, J., Kauffmann, J., Lee, M.-Y., Leurini, S., Medina, S.-N. X., Montenegro-Montes, F.M., Riener, M., Rigby, A.J., Sanchez-Monge, A., Schilke, P., Schisano, E., Traficante, A., Wienen, M., Urquhart, J.S., Figura, C., Cross, J.R., Wells, M.R.A., Moore, T.J.T., Eden, D.J., Ragan, S.E., Pettitt, A.R., Duarte-Cabral, A., Colombo, D., Schuller, F., Csengeri, T., Mattern, M., Beuther, H., Menten, K.M., Wyrowski, F., Anderson, L.D., Barnes, P.J., Beltran, M.T., Billington, S.J., Bronfman, L., Giannetti, A., Kainulainen, J., Kauffmann, J., Lee, M.-Y., Leurini, S., Medina, S.-N. X., Montenegro-Montes, F.M., Riener, M., Rigby, A.J., Sanchez-Monge, A., Schilke, P., Schisano, E., Traficante, A., and Wienen, M.

Abstract

By combining two surveys covering a large fraction of the molecular material in the Galactic disk we investigate the role the spiral arms play in the star formation process. We have matched clumps identified by ATLASGAL with their parental GMCs as identified by SEDIGISM, and use these giant molecular cloud (GMC) masses, the bolometric luminosities, and integrated clump masses obtained in a concurrent paper to estimate the dense gas fractions (\(DGF_{gmc} = ∑M_{clump}/M_{gmc}\)) and the instantaneous star forming efficiencies (i.e., \(SFE_{gmc} = ∑L_{clump}/M_{gmc}\)). We find that the molecular material associated with ATLASGAL clumps is concentrated in the spiral arms (∼60 per cent found within ±10 km s\(^{−1}\) of an arm). We have searched for variations in the values of these physical parameters with respect to their proximity to the spiral arms, but find no evidence for any enhancement that might be attributable to the spiral arms. The combined results from a number of similar studies based on different surveys indicate that, while spiral-arm location plays a role in cloud formation and HI to H\(_2\) conversion, the subsequent star formation processes appear to depend more on local environment effects. This leads us to conclude that the enhanced star formation activity seen towards the spiral arms is the result of source crowding rather than the consequence of a any physical process.

Published
2020

5. Protostellar Outflows at the EarliesT Stages (POETS) II. A possible radio synchrotron jet associated with the EGO G035.02+0.35

Author

Sanna, A., Moscadelli, L., Goddi, C., Beltran, M.T., Brogan, C.L., Garatti, A.C.O., Massi, F., Padovani, M., Sanna, A., Moscadelli, L., Goddi, C., Beltran, M.T., Brogan, C.L., Garatti, A.C.O., Massi, F., and Padovani, M.

Abstract

Contains fulltext : 201658.pdf (publisher's version ) (Open Access) Contains fulltext : 201658-1.pdf (preprint version ) (Open Access)

Published
2019

6. Protostellar Outflows at the EarliesT Stages (POETS) II. A possible radio synchrotron jet associated with the EGO G035.02+0.35

Author

Sanna, A., Moscadelli, L., Goddi, C., Beltran, M.T., Brogan, C.L., Garatti, A.C.O., Massi, F., Padovani, M., Sanna, A., Moscadelli, L., Goddi, C., Beltran, M.T., Brogan, C.L., Garatti, A.C.O., Massi, F., and Padovani, M.

Abstract

Contains fulltext : 201658.pdf (publisher's version ) (Open Access) Contains fulltext : 201658-1.pdf (preprint version ) (Open Access)

Published
2019

7. Protostellar Outflows at the EarliesT Stages (POETS) II. A possible radio synchrotron jet associated with the EGO G035.02+0.35

Author

Sanna, A., Moscadelli, L., Goddi, C., Beltran, M.T., Brogan, C.L., Garatti, A.C.O., Massi, F., Padovani, M., Sanna, A., Moscadelli, L., Goddi, C., Beltran, M.T., Brogan, C.L., Garatti, A.C.O., Massi, F., and Padovani, M.

Abstract

Contains fulltext : 201658.pdf (publisher's version ) (Open Access) Contains fulltext : 201658-1.pdf (preprint version ) (Open Access)

Published
2019

8. IRAS 23385+6053: An embedded massive cluster in the making

Author

Cesaroni, R., Beuther, H., Ahmadi, A., Beltran, M.T., Csengeri, T., Galvan-Madrid, R., Gieser, C., Henning, T., Johnston, K.G., Klaassen, P. D., Kuiper, R., Leurini, S., Linz, H., Longmore, S., Lumsden, S.L., Maud, L.T., Moscadelli, L., Mottram, J.C., Palau, A., Peters, T., Pudritz, R.E., Sanchez-Monge, A., Schilke, P., Semenov, D., Suri, S., Urquhart, J.S., Winters, J.M., Zhang, Q., Zinnecker, H., Cesaroni, R., Beuther, H., Ahmadi, A., Beltran, M.T., Csengeri, T., Galvan-Madrid, R., Gieser, C., Henning, T., Johnston, K.G., Klaassen, P. D., Kuiper, R., Leurini, S., Linz, H., Longmore, S., Lumsden, S.L., Maud, L.T., Moscadelli, L., Mottram, J.C., Palau, A., Peters, T., Pudritz, R.E., Sanchez-Monge, A., Schilke, P., Semenov, D., Suri, S., Urquhart, J.S., Winters, J.M., Zhang, Q., and Zinnecker, H.

Abstract

Context. This study is part of the project “CORE”, an IRAM/NOEMA large program consisting of observations of the millimeter continuum and molecular line emission towards 20 selected high-mass star forming regions. The goal of the program is to search for circumstellar accretion disks, study the fragmentation process of molecular clumps, and investigate the chemical composition of the gas in these regions. Aims. We focus on IRAS 23385+6053, which is believed to be the least evolved source of the CORE sample. This object is characterized by a compact molecular clump that is IR dark shortward of 24 µm and is surrounded by a stellar cluster detected in the near-IR. Our aim is to study the structure and velocity field of the clump. Methods. The observations were performed at ∼1.4 mm and employed three configurations of NOEMA and additional single-dish maps, merged with the interferometric data to recover the extended emission. Our correlator setup covered a number of lines from well-known hot core tracers and a few outflow tracers. The angular (∼0.′′45–0.′′9) and spectral (0.5 km s−1) resolutions were sufficient to resolve the clump in IRAS 23385+6053 and investigate the existence of large-scale motions due to rotation, infall, or expansion. Results. We find that the clump splits into six distinct cores when observed at sub-arcsecond resolution. These are identified through their 1.4 mm continuum and molecular line emission. We produce maps of the velocity, line width, and rotational temperature from the methanol and methyl cyanide lines, which allow us to investigate the cores and reveal a velocity and temperature gradient in the most massive core. We also find evidence of a bipolar outflow, possibly powered by a low-mass star. Conclusions. We present the tentative detection of a circumstellar self-gravitating disk lying in the most massive core and powering a largescale outflow previously known in the literature. In our scenario, the star powering the flow is responsib

Published
2019

9. Accelerating infall and rotational spin-up in the hot molecular core G31.41+0.31

Author

Beltran, M.T., Cesaroni, R., Rivilla, V.M., Sanchez-Monge, A., Moscadelli, L., Ahmadi, A., Goddi, C., Kuiper, R.A., Peters, T., Tak, F. van der, Walmsley, C.M., Beltran, M.T., Cesaroni, R., Rivilla, V.M., Sanchez-Monge, A., Moscadelli, L., Ahmadi, A., Goddi, C., Kuiper, R.A., Peters, T., Tak, F. van der, and Walmsley, C.M.

Abstract

Contains fulltext : 193975.pdf (preprint version ) (Open Access)

Published
2018

10. The feedback of an HC H-II region on its parental molecular core The case of core A1 in the star-forming region G24.78+0.08

Author

Moscadelli, L., Rivilla, V.M., Cesaroni, R., Beltran, M.T., Goddi, C., Sanchez-Monge, A., Schilke, P., Peters, T.A., Tak, F. Van der, Vig, S., Moscadelli, L., Rivilla, V.M., Cesaroni, R., Beltran, M.T., Goddi, C., Sanchez-Monge, A., Schilke, P., Peters, T.A., Tak, F. Van der, and Vig, S.

Abstract

Contains fulltext : 194845.pdf (publisher's version ) (Open Access)

Published
2018

11. The feedback of an HC H-II region on its parental molecular core The case of core A1 in the star-forming region G24.78+0.08

Author

Moscadelli, L., Rivilla, V.M., Cesaroni, R., Beltran, M.T., Goddi, C., Sanchez-Monge, A., Schilke, P., Peters, T.A., Tak, F. Van der, Vig, S., Moscadelli, L., Rivilla, V.M., Cesaroni, R., Beltran, M.T., Goddi, C., Sanchez-Monge, A., Schilke, P., Peters, T.A., Tak, F. Van der, and Vig, S.

Abstract

Contains fulltext : 194845.pdf (publisher's version ) (Open Access)

Published
2018

12. Accelerating infall and rotational spin-up in the hot molecular core G31.41+0.31

Author

Beltran, M.T., Cesaroni, R., Rivilla, V.M., Sanchez-Monge, A., Moscadelli, L., Ahmadi, A., Goddi, C., Kuiper, R.A., Peters, T., Tak, F. van der, Walmsley, C.M., Beltran, M.T., Cesaroni, R., Rivilla, V.M., Sanchez-Monge, A., Moscadelli, L., Ahmadi, A., Goddi, C., Kuiper, R.A., Peters, T., Tak, F. van der, and Walmsley, C.M.

Abstract

Contains fulltext : 193975.pdf (preprint version ) (Open Access)

Published
2018

13. Accelerating infall and rotational spin-up in the hot molecular core G31.41+0.31

Author

Beltran, M.T., Cesaroni, R., Rivilla, V.M., Sanchez-Monge, A., Moscadelli, L., Ahmadi, A., Goddi, C., Kuiper, R.A., Peters, T., Tak, F. van der, Walmsley, C.M., Beltran, M.T., Cesaroni, R., Rivilla, V.M., Sanchez-Monge, A., Moscadelli, L., Ahmadi, A., Goddi, C., Kuiper, R.A., Peters, T., Tak, F. van der, and Walmsley, C.M.

Abstract

Contains fulltext : 193975.pdf (preprint version ) (Open Access)

Published
2018

14. The feedback of an HC H-II region on its parental molecular core The case of core A1 in the star-forming region G24.78+0.08

Author

Moscadelli, L., Rivilla, V.M., Cesaroni, R., Beltran, M.T., Goddi, C., Sanchez-Monge, A., Schilke, P., Peters, T.A., Tak, F. Van der, Vig, S., Moscadelli, L., Rivilla, V.M., Cesaroni, R., Beltran, M.T., Goddi, C., Sanchez-Monge, A., Schilke, P., Peters, T.A., Tak, F. Van der, and Vig, S.

Abstract

Contains fulltext : 194845.pdf (publisher's version ) (Open Access)

Published
2018

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