Magnetically regulated collapse in the B335 protostar?. II. Observational constraints on gas ionization and magnetic field coupling

0583963 - ASÚ 2024 RIV FR eng J - Journal Article
Cabedo, V. … Total 7 authors
Magnetically regulated collapse in the B335 protostar? II. Observational constraints on gas ionization and magnetic field coupling.
Astronomy & Astrophysics. Roč. 669, January (2023), č. článku A90. ISSN 0004-6361. E-ISSN 1432-0746
Research Infrastructure: EU-ARC.CZ III - 90259
Keywords : stars formation * circumstellar matter * magnetic fields
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 6.5, year: 2022
Method of publishing: Open access
https://doi.org/10.1051/0004-6361/202243813

The purpose of this work is to observationally characterize the level of ionization of the gas at small envelope radii and to investigate its relation to the efficiency of the coupling between the star-forming gas and the magnetic field in the Class 0 protostar B335. We obtained molecular line emission maps of B335 with ALMA, which we use to measure the deuteration fraction of the gas, RD, its ionization fraction, χe, and the cosmic-ray ionization rate, ζCR, at envelope radii ≲1000 au.
Permanent Link: https://hdl.handle.net/11104/0351950