SIMBAD references

2022AJ....163...64E - Astron. J., 163, 64-64 (2022/February-0)

A census of stars and disks in Corona Australis.

ESPLIN T.L. and LUHMAN K.L.

Abstract (from CDS):

We have performed a census of the young stellar populations near the Corona Australis molecular cloud using photometric and kinematic data from several sources, particularly Gaia EDR3, and spectroscopy of hundreds of candidate members. We have compiled a catalog of 393 members of Corona Australis, (39 at >M6), 293 (36) of which are spectroscopically classified for the first time in this work. We find that Corona Australis can be described in terms of two stellar populations, a younger one (a few megayears) that is partially embedded in the cloud (the Coronet Cluster) and an older one (∼15 Myr) that surrounds and extends beyond the cloud (Upper Corona Australis). These populations exhibit similar space velocities, and we find no evidence for distinct kinematic populations in Corona Australis, in contrast to a recent study based on Gaia DR2. The distribution of spectral types in Corona Australis reaches a maximum at M5 (∼0.15 M), indicating that the initial mass function has a similar characteristic mass as other nearby star-forming regions. Finally, we have compiled mid-infrared photometry from the Wide-field Infrared Survey Explorer and the Spitzer Space Telescope for the members of Corona Australis, and we have used those data to identify and classify their circumstellar disks. Excesses are detected for 122 stars, one-third of which are reported for the first time in this work.

Abstract Copyright: © 2022. The American Astronomical Society. All rights reserved.

Journal keyword(s): Star-forming regions - Pre-main sequence stars - Low mass stars - Brown dwarfs - Protoplanetary disks

VizieR on-line data: <Available at CDS (J/AJ/163/64): table1.dat table4.dat>

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 21

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2022AJ....163...64E and select 'bookmark this link' or equivalent in the popup menu