A global view on star formation: The GLOSTAR Galactic plane survey. II. Supernova Remnants in the first quadrant of the Milky Way

no code implementations • 10 Mar 2021 • Rohit Dokara, A. Brunthaler, K. M. Menten, S. A. Dzib, W. Reich, W. D. Cotton, L. D. Anderson, C. -H. R. Chen, Y. Gong, S. -N. X. Medina, G. N. Ortiz-León, M. Rugel, J. S. Urquhart, F. Wyrowski, A. Yang, H. Beuther, S. J. Billington, T. Csengeri, C. Carrasco-González, N. Roy

We aim to identify SNR candidates using continuum images from the Karl G. Jansky Very Large Array GLObal view of the STAR formation in the Milky Way (GLOSTAR) survey.

Astrophysics of Galaxies High Energy Astrophysical Phenomena

Fragmentation in the massive G31.41+0.31 protocluster

no code implementations • 8 Mar 2021 • M. T. Beltrán, V. M. Rivilla, R. Cesaroni, L. T. Maud, D. Galli, L. Moscadelli, A. Lorenzani, A. Ahmadi, H. Beuther, T. Csengeri, S. Etoka, C. Goddi, P. D. Klaassen, R. Kuiper, M. S. N. Kumar, T. Peters, Á. Sánchez-Monge, P. Schilke, F. van der Tak, S. Vig, H. Zinnecker

Sources A and B, located closer to the center of the core and separated by 750 au, are clearly associated with two free-free continuum sources, likely thermal radio jets, and are the brightest in the core.

Astrophysics of Galaxies

The physical and chemical structure of high-mass star-forming regions. Unraveling chemical complexity with the NOEMA large program "CORE"

no code implementations • 23 Feb 2021 • C. Gieser, H. Beuther, D. Semenov, A. Ahmadi, S. Suri, T. Möller, M. T. Beltran, P. Klaassen, Q. Zhang, J. S. Urquhart, Th. Henning, S. Feng, R. Galván-Madrid, V. de Souza Magalhães, L. Moscadelli, S. Longmore, S. Leurini, R. Kuiper, T. Peters, K. M. Menten, T. Csengeri, G. Fuller, F. Wyrowski, S. Lumsden, Á. Sánchez-Monge, L. Maud, H. Linz, A. Palau, P. Schilke, J. Pety, R. Pudritz, J. M. Winters, V. Piétu

Within the 18 observed regions, we identify 22 individual cores with associated 1. 37 mm continuum emission and with a radially decreasing temperature profile.

Astrophysics of Galaxies Solar and Stellar Astrophysics

Multi-scale view of star formation in IRAS 21078+5211: From clump fragmentation to disk wind

no code implementations • 9 Feb 2021 • L. Moscadelli, H. Beuther, A. Ahmadi, C. Gieser, F. Massi, R. Cesaroni, Á. Sánchez-Monge, F. Bacciotti, M. T. Beltrán, T. Csengeri, R. Galván-Madrid, Th. Henning, P. D. Klaassen, R. Kuiper, S. Leurini, S. N. Longmore, L. T. Maud, T. Möller, A. Palau, T. Peters, R. E. Pudritz, A. Sanna, D. Semenov, J. S. Urquhart, J. M. Winters, H. Zinnecker

In the massive star-forming region IRAS 21078+5211, a highly fragmented cluster (0. 1~pc in size) of molecular cores is observed, located at the density peak of an elongated (1~pc in size) molecular cloud.

Astrophysics of Galaxies Solar and Stellar Astrophysics

A relation between the radial velocity dispersion of young clusters and their age: Evidence for hardening as the formation scenario of massive close binaries

no code implementations • 5 Jan 2021 • M. C. Ramírez-Tannus, F. Backs, A. de Koter, H. Sana, H. Beuther, A. Bik, W. Brandner, L. Kaper, H. Linz, Th. Henning, J. Poorta

Using literature data, we measured the radial-velocity dispersion ($\sigma_\mathrm{RV}$) as a proxy for the close binary fraction in ten OB associations in the Galaxy and the Large Magellanic Cloud, spanning an age range from 1 to 6 Myrs.

Solar and Stellar Astrophysics Astrophysics of Galaxies