Untangling Galaxy. III. Pre-main-sequence stars Virtual Observatory Resource

Authors
  1. Mcbride A.
  2. Lingg R.
  3. Kounkel M.
  4. Covey K.
  5. Hutchinson B.
  6. Published by
    CDS
Abstract

A reliable census of pre-main-sequence stars with known ages is critical to our understanding of early stellar evolution, but historically there has been difficulty in separating such stars from the field. We present a trained neural network model, Sagitta, that relies on Gaia DR2 and 2 Micron All-Sky Survey photometry to identify pre-main-sequence stars and to derive their age estimates. Our model successfully recovers populations and stellar properties associated with known star-forming regions up to five kpc. Furthermore, it allows for a detailed look at the star-forming history of the solar neighborhood, particularly at age ranges to which we were not previously sensitive. In particular, we observe several bubbles in the distribution of stars, the most notable of which is a ring of stars associated with the Local Bubble, which may have common origins with Gould's Belt.

Keywords
  1. pre-main-sequence-stars
  2. young-stellar-objects
  3. extinction
  4. visible-astronomy
Bibliographic source Bibcode
2021AJ....162..282M
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/282
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/162/282
Document Object Identifer DOI
doi:10.26093/cds/vizier.51620282

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/162/282
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/282
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/282
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/282/table4?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/282/table4?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/282/table4?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/282/table5?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/282/table5?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/282/table5?

History

2022-04-20T13:10:45Z
Resource record created
2022-04-20T13:10:45Z
Created
2022-06-13T12:12:51Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr