Zobrazeno 1 - 10
of 452
pro vyhledávání: '"Walmsley, C."'
Autor:
Wienen, M., Wyrowski, F., Walmsley, C. M., Csengeri, T., Pillai, T., Giannetti, A., Menten, K. M.
Publikováno v:
A&A 649, A21 (2021)
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 clumps in
Externí odkaz:
http://arxiv.org/abs/2102.04478
Autor:
Fedriani, R., Garatti, A. Caratti o, Coffey, D., Garcia-Lopez, R., Kraus, S., Weigelt, G., Stecklum, B., Ray, T. P., Walmsley, C. M.
Publikováno v:
A&A 616, A126 (2018)
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:
http://arxiv.org/abs/1805.11512
Autor:
Beltrán, M. T., Cesaroni, R., Rivilla, V. M., Sánchez-Monge, Á., Moscadelli, L., Ahmadi, A., Allen, V., Beuther, H., Etoka, S., Galli, D., Galván-Madrid, R., Goddi, C., Johnston, K. G., Kölligan, A., Kuiper, R., Kumar, M. S. N., Maud, L. T., Mottram, J. C., Peters, T., Schilke, P., Testi, L., van der Tak, F., Walmsley, C. M.
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:
http://arxiv.org/abs/1803.05300
Autor:
Cesaroni, R., Moscadelli, L., Neri, R., Sanna, A., Garatti, A. Caratti o, Eisloeffel, J., Stecklum, B., Ray, T., Walmsley, C. M.
Publikováno v:
A&A 612, A103 (2018)
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:
http://arxiv.org/abs/1802.04228
We present a review of the properties of Class I methanol masers detected in low-mass star forming regions (LMSFRs). These masers, henceforth called LMMIs, are associated with postshock gas in the lobes of chemically active outflows in LMSFRs NGC1333
Externí odkaz:
http://arxiv.org/abs/1801.06656
Autor:
Wienen, M., Wyrowski, F., Menten, K. M., Urquhart, J. S., Walmsley, C. M., Csengeri, T., Koribalski, B. S., Schuller, F.
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:
http://arxiv.org/abs/1708.07839
Autor:
Caselli, P., Bizzocchi, L., Keto, E., Sipila, 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.
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:
http://arxiv.org/abs/1706.03063
Autor:
Garatti, A. Caratti o, Stecklum, B., Lopez, R. Garcia, Eislöffel, J., Ray, T. P., Sanna, A., Cesaroni, R., Walmsley, C. M., Oudmaijer, R. D., de Wit, W. J., Moscadelli, L., Greiner, J., Krabbe, A., Fischer, C., Klein, R., Ibañez, J. M.
Publikováno v:
2016NatPh..13..276C
Solar-mass stars form via circumstellar disk accretion (disk-mediated accretion). Recent findings indicate that this process is likely episodic in the form of accretion bursts, possibly caused by disk fragmentation. Although it cannot be ruled out th
Externí odkaz:
http://arxiv.org/abs/1704.02628
Autor:
Beuther, H., Walsh, A. J., Johnston, K. G., Henning, Th., Kuiper, R., Longmore, S. N., Walmsley, C. M.
Publikováno v:
A&A 603, A10 (2017)
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:
http://arxiv.org/abs/1703.07235
Publikováno v:
A&A 599, A38 (2017)
IRAS 18511+0146 is a young embedded (proto)cluster located at 3.5 kpc surrounding what appears to be an intermediate mass protostar. In this paper, we investigate the nature of cluster members (two of which are believed to be the most massive and lum
Externí odkaz:
http://arxiv.org/abs/1611.01910