NIR phot. & optical veiling in T Tauri stars Virtual Observatory Resource

Authors
  1. Sullivan K.
  2. Kraus A.L.
  3. Published by
    CDS
Abstract

Accretion is one of the defining characteristics of classical T Tauri stars, fueled by the presence of a circumstellar disk comprised of dust and gas. Accretion produces a UV and optical excess, while re-radiated emission at the inner edge of the dust component of the disk produces a near-infrared (NIR) excess. The interplay between stars and their disks helps regulate protoplanetary disk evolution and dispersal, which is key to a full understanding of planet formation. To investigate the relations between NIR excess and optical excess in both single and binary stars, we used an archival sample of spectroscopically characterized members of the Taurus star-forming region ({tau}~1-2Myr) with measured luminosities, spectral types, and optical veiling. We combined the archival sample with the Two Micron All Sky Survey and Wide-field Infrared Survey Explorer NIR photometry and high-resolution imaging surveys. We found that NIR and optical excesses are correlated in multiple NIR photometric bands, suggesting that they are closely related, likely because more massive disks have higher inner dust disk walls and are also associated with higher accretion rates. We also found that multiplicity has no impact on accretion or inner disk properties in a sample with a wide range of separations, but the sample was too small to specifically investigate close binaries, where the effects of multiplicity on disk properties should be most significant.

Keywords
  1. young-stellar-objects
  2. infrared-photometry
  3. visible-astronomy
  4. extinction
  5. stellar-distance
Bibliographic source Bibcode
2022ApJ...928..134S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/928/134
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/928/134
Document Object Identifer DOI
doi:10.26093/cds/vizier.19280134

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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/928/134
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https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/928/134/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/928/134/table1?

History

2024-03-19T12:42:57Z
Resource record created
2024-03-19T12:42:57Z
Created
2024-09-11T20:23:03Z
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