Zobrazeno 1 - 10 of 175 pro vyhledávání: '"C. M. Walmsley"'
2
ATLASGAL-selected massive clumps in the inner Galaxy
Autor: Thushara Pillai, Timea Csengeri, Karl M. Menten, Andrea Giannetti, M. Wienen, C. M. Walmsley, Friedrich Wyrowski
Publikováno v: Astronomy & Astrophysics. 649:A21
Context. Deuteration has been used as a tracer of the evolutionary phases of low- and high-mass star formation. The APEX Telescope Large Area Survey (ATLASGAL) provides an important repository for a detailed statistical study of massive star-forming
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::848a98c0c4aae35dde94011cc8ceea5b
https://doi.org/10.1051/0004-6361/201731208
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3
Radio outburst from a massive (proto)star. When accretion turns into ejection
Autor: A. Caratti o Garatti, Alberto Sanna, Riccardo Cesaroni, Luca Moscadelli, B. Stecklum, R. Neri, C. M. Walmsley, J. Eislöffel, Tom Ray
Context. Recent observations of the massive young stellar object S255 NIRS 3 have revealed a large increase in both methanol maser flux density and IR emission, which have been interpreted as the result of an accretion outburst, possibly due to insta
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a23a165a3aca32dcc554349235d8ccaf
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4
Parsec-scale jets driven by high-mass young stellar objects. Connecting the au- and the parsec-scale jet in IRAS 13481-6124
Autor: B. Stecklum, Gerd Weigelt, Stefan Kraus, R. Fedriani, R. Garcia Lopez, Deirdre Coffey, A. Caratti o Garatti, Tom Ray, C. M. Walmsley
Context: Protostellar jets in high-mass young stellar objects (HMYSOs) play a key role in the understanding of star formation and provide us with an excellent tool to study fundamental properties of HMYSOs. Aims: We aim at studying the physical and k
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::566b3ddc002513a2ff11dc29b1fc1614
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6
Accelerating infall and rotational spin-up in the hot molecular core G31.41+0.31
Autor: Álvaro Sánchez-Monge, Joseph C. Mottram, Peter Schilke, Sandra Etoka, Luke T. Maud, A. Kölligan, Henrik Beuther, L. Moscadelli, Leonardo Testi, Rolf Kuiper, C. M. Walmsley, D. Galli, Pamela Klaassen, A. Ahmadi, V. Allen, Ciriaco Goddi, F. F. S. van der Tak, M. S. N. Kumar, Katharine G. Johnston, R. Cesaroni, Roberto Galván-Madrid, V. M. Rivilla, M. T. Beltrán, Thomas Peters
Publikováno v: Astronomy and Astrophysics
Astronomy & astrophysics, 615:141. EDP Sciences
Astronomy & Astrophysics, 615, pp. 1-22
Astronomy & Astrophysics, 615, A141
Astronomy & Astrophysics
Astronomy & Astrophysics, 615, 1-22
As part of our effort to search for circumstellar disks around high-mass stellar objects, we observed the well-known core G31.41+0.31 with ALMA at 1.4 mm with an angular resolution of~0.22" (~1700 au). The dust continuum emission has been resolved in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::000fef1140c48986c2988f9ac97caed0
https://hdl.handle.net/https://repository.ubn.ru.nl/handle/2066/193975
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7
CO depletion in ATLASGAL-selected high-mass clumps
Autor: Francesco Fontani, Karl M. Menten, Andrea Giannetti, Frederic Schuller, Jan Brand, Friedrich Wyrowski, Q. Nguyen Luong, Rolf Güsten, C. M. Walmsley, Henrik Beuther, Timea Csengeri
Publikováno v: EAS Publications Series. :147-151
In the low-mass regime, it is found that the gas-phase abundances of C-bearing molecules in cold starless cores rapidly decrease with increasing density. Here the molecules tend to stick to the grains, forming ice mantles. We study CO depletion in th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0be75d7cd6ed872f9b270edfc2678d0
https://doi.org/10.1051/eas/1575025
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8
ATLASGAL - Ammonia observations towards the southern Galactic Plane
Autor: Timea Csengeri, M. Wienen, Frederic Schuller, Karl M. Menten, Friedrich Wyrowski, C. M. Walmsley, James Urquhart, Baerbel Koribalski
Publikováno v: NASA Astrophysics Data System
The initial conditions of molecular clumps in which high-mass stars form are poorly understood. In particular, a more detailed study of the earliest evolutionary phases is needed. The APEX Telescope Large Area Survey of the whole inner Galactic disk
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d8b2dc2b5871cbb84b1d04260be6988
http://arxiv.org/abs/1708.07839
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9
Fragmentation and disk formation in high-mass star formation: The ALMA view of G351.77-0.54 at 0.06' resolution
Autor: Rolf Kuiper, Steven N. Longmore, Henrik Beuther, Andrew Walsh, Th. Henning, C. M. Walmsley, Katharine G. Johnston
Publikováno v: Astronomy & Astrophysics
Aims: We resolve the small-scale structure around the high-mass hot core region G351.77-0.54 to investigate its disk and fragmentation properties. Methods: Using ALMA at 690GHz with baselines exceeding 1.5km, we study the dense gas, dust and outflow
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4e016d77a5b7a73a2b498b6b08508a8
http://arxiv.org/abs/1703.07235
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10
NH3 (1-0-0-0) in the pre-stellar core L1544
Autor: F. F. S. van der Tak, Brunella Nisini, C. Codella, E. F. van Dishoeck, Laurent Pagani, C. M. Walmsley, Paola Caselli, Lars E. Kristensen, Yuri Aikawa, A. Faure, Luca Bizzocchi, Olli Sipilä, E. Keto, Mario Tafalla
Publikováno v: NASA Astrophysics Data System
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2017, 603, pp.L1. ⟨10.1051/0004-6361/201731121⟩
Astronomy & Astrophysics (0004-6361), 603, L1
Astronomy & astrophysics, 603:L1. EDP Sciences
Caselli, P, Bizzocchi, L, Keto, E, Sipilä, O, Tafalla, M, Pagani, L, Kristensen, L E, van der Tak, F F S, Walmsley, C M, Codella, C, Nisini, B, Aikawa, Y, Faure, A & van Dishoeck, E F 2017, ' NH 3 (1 0-0 0 ) in the pre-stellar core L1544 ', Astronomy and Astrophysics, vol. 603, L1 . https://doi.org/10.1051/0004-6361/201731121
Astronomy and Astrophysics-A&A, 2017, 603, pp.L1. ⟨10.1051/0004-6361/201731121⟩
Pre-stellar cores represent the initial conditions in the process of star and planet formation, therefore it is important to study their physical and chemical structure. Because of their volatility, nitrogen-bearing molecules are key to study the den
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6939c31b5d86519c9380e50b096e9a44
https://hdl.handle.net/1887/59283
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