NASCENT-stars large program: origin of molecular complexity towards emerging high-mass protostars
Year: 2024
Type: conference-paper
Abstract: During the star formation process, the interstellar medium gets enriched in a complex zoo of molecules. The extremely rich chemistry of the star forming gas holds the key to constrain the link between the chemistry of disks and their forming planetary systems. It is, however, unclear what are the key physical conditions that influence the emerging complex chemistry, and how the fundamental properties of the emerging star, or stellar clusters impact its evolution. In this context, wide-band receivers open a new era by allowing us to perform quasi-instantaneously spectral surveys that are required for a more robust estimation of molecular abundances. The NASCENT-stars project (PI: Csengeri) is a large observing program started in 2023 at the IRAM NOEMA observatory with 228 hours allocated at the telescope making use of the newly commissioned high spectral resolution (250 kHz) and wide-band observing mode. Overall, we observe a 46.5 GHz non-continuous bandwidth to characterize the physico-chemical conditions of the most active star forming regions of the Cygnus-X molecular complex at the scale of 1400 au probing statistically significant samples individual protostellar envelopes. I would like to highlight the first results of NASCENT-stars and our efforts to develop artificial intelligence and machine learning methods facilitating the exploitation of these rich datasets. Results of this project should pave the way to the spectacular science cases enabled by the ALMA WSU.
Authors: Csengeri, Timea, Bouscasse, Arumguam, Lopez-Sepulcre, Le Gal, Baudry, Bontemps, Braine, Brouillet, Guilloteau, Herpin, Kessler, Valeille-Manet, Motte, Coutens, Vastel, Wyrowski, Menten, Beuther, Galvan-Madrid, Ortiz-Leon, Garrod, Bonfand, Ginsburg, Commercon, Cunningham, Dannhauer, Simon, Schneider, Gusdorf
Institutions: Laboratoire d'Astrophysique de Bordeaux, Instituto de Radioastronomía Milimétrica, Ausonius Institut de Recherche sur l'Antiquité et le Moyen age, Institut de Radioastronomie Millimétrique, Institut de Planétologie et d'Astrophysique de Grenoble, Institut de Recherche en Astrophysique et Planétologie, Max Planck Institute for Radio Astronomy, Max Planck Institute for Astronomy, Universidad Nacional Autónoma de México, West Virginia University, University of Florida, National Institute of Astrophysics, Optics and Electronics, Centre de Recherche Astrophysique de Lyon, University of Virginia, SKA Observatory, University of Cologne, École Normale Supérieure de Lyon, École Normale Supérieure - PSL, Laboratoire de Physique de l'Ecole Normale Supérieure
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4404431877