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8 results on '"Möller Th."'

1. PRODIGE -- Envelope to Disk with NOEMA II. Small-scale temperature structure and a streamer feeding the SVS13A protobinary using CH3CN and DCN

Author

Hsieh, T. -H., Segura-Cox, D. M., Pineda, J. E., Caselli, P., Bouscasse, L., Neri, R., Lopez-Sepulcre, A., Valdivia-Mena, M. T., Maureira, M. J., Henning, Th., Smirnov-Pinchukov, G. V., Semenov, D., Möller, Th., Cunningham, N., Fuente, A., Marino, S., Dutrey, A., Tafalla, M., Chapillon, E., Ceccarelli, C., and Zhao, B.

Subjects
Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

Aims. We present high sensitivity and high-spectral resolution NOEMA observations of the Class 0/I binary system SVS13A, composed of the low-mass protostars VLA4A and VLA4B with a separation of ~90 au. VLA4A is undergoing an accretion burst that enriches the chemistry of the surrounding gas. This gives us an excellent opportunity to probe the chemical and physical conditions as well as the accretion process. Methods. We observe the (12K-11K) lines of CH3CN and CH313CN, the DCN (3-2) line, and the C18O (2-1) line toward SVS13A using NOEMA. Results. We find complex line profiles at disk scales which cannot be explained by a single component or pure Keplerian motion. By adopting two velocity components to model the complex line profiles, we find that the temperatures and densities are significantly different between these two components. This suggests that the physical conditions of the emitting gas traced via CH3CN can change dramatically within the circumbinary disk. In addition, combining our observations of DCN (3-2) with previous ALMA high-angular-resolution observations, we find that the binary system (or VLA4A) might be fed by an infalling streamer from envelope scales (~700 au). If this is the case, this streamer contributes to the accretion of material onto the system with a rate of at least 1.4x10-6 Msun yr-1. Conclusions. We conclude that the CH3CN emission in SVS13A traces hot gas from a complex structure. This complexity might be affected by a streamer that is possibly infalling and funneling material into the central region., Comment: 20 pages, 19 figures, accepted to A&A

Published
2022
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2. The physical and chemical structure of Sagittarius B2

Author

Sánchez-Monge, Á., Schilke, P., Schmiedeke, A., Ginsburg, A., Cesaroni, R., Lis, Darek, Qin, S.-L., Bergin, E., Comito, C., Möller, Th., Müller, H. S. P., INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Max Planck Institute for Radio Astronomy, Universität zu Köln, Observatoire de Paris, Université Paris sciences et lettres (PSL), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Department of Astronomy [Ann Arbor], University of Michigan [Ann Arbor], and University of Michigan System-University of Michigan System

Subjects
stars: massive, ISM: kinematics and dynamics, [PHYS]Physics [physics], radio lines: ISM, stars: formation, techniques: high angular resolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], ISM: individual objects: SgrB2(N), ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017
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3. Continuum radiative transfer Modeling of Sagittarius B2

Author

Schmiedeke, A., Schilke, P., Möller, Th., Sánchez-Monge, Á., Bergin, E., Comito, C., Csengeri, T., Lis, D. C., Molinari, S., Qin, S. L., Rolffs, R., Simon, Robert, Schaaf, Reinhold, and Stutzki, Jürgen

Abstract

We present results from radiative transfer modeling of the continuum emission towards Sagittarius B2 (hereafter Sgr B2). We have developed a radiative transfer framework – Pandora – that employs RADMC-3D (Dullemond 2012) for a self-consistent determination of the dust temperature. With this pipeline, we have set-up a single model that consistently reproduces the thermal dust and free-free continuum emission of Sgr B2 spanning four orders of magnitude in spatial scales (0.02–45 pc) and two orders of magnitude in frequency (20–4000 GHz).

Published
2016

4. The physical and chemical structure of Sagittarius B2

Author

Schmiedeke, A., Schilke, P., Möller, Th., Sánchez-Monge, Á., Bergin, E., Comito, C., Csengeri, T., Lis, D., Molinari, S., Qin, S.-L., Rolffs, R., Universität zu Köln, Max Planck Institute for Radio Astronomy, INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Department of Astronomy [Ann Arbor], University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Max-Planck-Institut für Radioastronomie (MPIFR), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), Universität zu Köln = University of Cologne, École normale supérieure - Paris (ENS-PSL), and National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)

Subjects
[PHYS]Physics [physics], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016
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5. Search for mixed-symmetry states of nuclei in the vicinity of the double-magic nucleus

Author

Kocheva, D., Stegmann, R., Rainovski, G., Jolie, J., Pietralla, N., Stahl, Clement, Petkov, P., Blazhev, A., Hennig, A., Bauer, C., Braunroth, Th., Cortes, L., Dewald, A., Djongolov, M., Fransen, C., Gladnishki, K., Karayonchev, V., Lettmann, M., Litzinger, J., Möller, Th., Müller-Gatermann, C., Scheck, M., Scholz, Ph., Schramm, C., Thöle, P., Werner, V., Wölk, D., Zhu, S., Van Isacker, P., Grand Accélérateur National d'Ions Lourds (GANIL), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

This is an Open Access article distributed under the terms of Creative Commons Attribution Licence 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.; International audience; In this work we present the results from two experiments dedicated to search for quadrupole-collective isovector valence-shell excitation, the states with so-called mixed proton-neutron symmetry (MSS), in nuclei around the doubly magic nucleus $^{208}$Pb. $^{212}$Po was studied in an α-transfer reaction. $^{204}$Hg was studied in an inverse kinematics Coulomb excitation reaction on a carbon target. Both experiments provide indications for existence of one-phonon MSSs. Those are the first experimentally identified MSSs in the mass A ≈ 208 region.

Published
2015
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6. Scientific Use Cases for the Virtual Atomic and Molecular Data Center

Author

Dubernet-Tuckey, Marie-Lise, Aboudarham, Jean, Ba, Yaye-Awa, Boiziot, M., Bottinelli, S., Caux, Emmanuel, Endres, C., Glorian, J.-M., Henry, Florence, Lamy, Laurent, Le Sidaner, Pierre, Möller, Th., Moreau, Nicolas, Renié, Christian, Roueff, Evelyne, Schilke, Peter, Vastel, Charlotte, Zwölf, Carlo Maria, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Physique des plasmas, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Physique solaire

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], PADC
Abstract

International audience

Published
2014

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