High-resolution, near-infrared observations of B[e] supergiants

0553609 - ASÚ 2022 RIV AR eng J - Článek v odborném periodiku
Arias, M.L. - Vallverdú, R. - Torres, A.F. - Kraus, Michaela
High-resolution, near-infrared observations of B[e] supergiants.
Boletín de la Asociación Argentina de Astronomía. Roč. 62, July (2021), s. 104-106. E-ISSN 1669-9521
Grant CEP: GA ČR(CZ) GA20-00150S
GRANT EU: European Commission(XE) 823734 - POEMS
Institucionální podpora: RVO:67985815
Klíčová slova: early-type stars * circumstellar matter * emission-line
Obor OECD: Astronomy (including astrophysics,space science)
Způsob publikování: Omezený přístup
http://astronomiaargentina.fcaglp.unlp.edu.ar/uploads/docs/baaa62.pdf

B[e] supergiants stars are surrounded by disks formed from material released from the central object. To trace the properties of these disks, diverse emission features in the optical and near-infrared can be used. CO band emission is particularly valuable, because it defines the transition region between the atomic and molecular gas. We have recently started a campaign to obtain high-resolution near-infrared spectra for B[e] supergiant stars with confirmed CO emission. In this work, we present GEMINI/IGRINS spectra of CD-57 3107 and HD 62 623 and the physical parameters of their molecular disks obtained from detailed modeling of their CO band emission. Moreover, we report on the detection of 13CO emission in both stars, reinforcing the evolved nature of these objects.


Trvalý link: http://hdl.handle.net/11104/0328367