Circumstellar disks in Lupus complex Virtual Observatory Resource

Authors
  1. Teixeira P.S.
  2. Scholz A.
  3. Alves J.
  4. Published by
    CDS
Abstract

Previous star formation studies have, out of necessity, often defined a population of young stars confined to the proximity of a molecular cloud. Gaia allows us to examine a wider, three-dimensional structure of nearby star forming regions, leading to a new understanding of their history. We present a wide-area survey covering 494 deg^2^ of the Lupus complex, a prototypical low-mass star forming region. Our survey includes all known molecular clouds in this region as well as parts of the Upper Scorpius and Upper Centaurus Lupus (UCL) groups of the Sco-Cen complex. We combine Gaia DR2 proper motions and parallaxes as well as ALLWISE mid-infrared photometry to select young stellar objects (YSOs) with disks. The YSO ages are inferred from Gaia color-magnitude diagrams, and their evolutionary stages from the slope of the spectral energy distributions. We find 98 new disk-bearing sources. Our new sample includes objects with ages ranging from 1 to 15Myr and masses ranging from 0.05 to 0.5M_{sun}_, and consists of 56 sources with thick disks and 42 sources with anemic disks. While the youngest members are concentrated in the clouds and at distances of 160 pc, there is a distributed population of slightly older stars that overlap in proper motion, spatial distribution, distance, and age with the Lupus and UCL groups. The spatial and kinematic properties of the new disk-bearing YSOs indicate that Lupus and UCL are not distinct groups. Our new sample comprises some of the nearest disks to Earth at these ages, and thus provides an important target for follow-up studies of disks and accretion in very low mass stars, for example with ALMA and ESO-VLT X-shooter.

Keywords
  1. star-forming-regions
  2. young-stellar-objects
  3. infrared-sources
  4. visible-astronomy
Bibliographic source Bibcode
2020A&A...642A..86T
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/642/A86
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/642/A86
Document Object Identifer DOI
doi:10.26093/cds/vizier.36420086

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/642/A86
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/642/A86
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/642/A86
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Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
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https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A86/tablea1?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A86/tablea1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A86/tablea1?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A86/tabled1?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A86/tabled1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A86/tabled1?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A86/tablee1?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A86/tablee1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A86/tablee1?

History

2021-02-10T13:51:30Z
Resource record created
2021-02-10T13:51:30Z
Created
2023-09-15T14:12:30Z
Updated

Contact

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