LDT UBVRI photometry of 84 T-Tauri Virtual Observatory Resource

Authors
  1. Robinson C.E.
  2. Espaillat C.C.
  3. Rodriguez J.E.
  4. Published by
    CDS
Abstract

Interpreting the short-timescale variability of the accreting, young, low-mass stars known as Classical T-Tauri stars remains an open task. Month-long, continuous light curves from the Transiting Exoplanet Survey Satellite (TESS) have become available for hundreds of T-Tauri stars. With this vast data set, identifying connections between the variability observed by TESS and short-timescale accretion variability is valuable for characterizing the accretion process. To this end, we obtained short-cadence TESS observations of 14 T-Tauri stars in the Taurus star formation region along with simultaneous ground-based, UBVRI-band photometry to be used as accretion diagnostics. In addition, we combine our data set with previously published simultaneous near- UV-near-IR Hubble Space Telescope spectra for one member of the sample. We find evidence that much of the short-timescale variability observed in the TESS light curves can be attributed to changes in the accretion rate, but note significant scatter between separate nights and objects. We identify hints of time lags within our data set that increase at shorter wavelengths, which we suggest may be evidence of longitudinal density stratification of the accretion column. Our results highlight that contemporaneous, multiwavelength observations remain critical for providing context for the observed variability of these stars.

Keywords
  1. young-stellar-objects
  2. stellar-masses
  3. infrared-photometry
  4. visible-astronomy
  5. broad-band-photometry
Bibliographic source Bibcode
2022ApJ...935...54R
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/935/54
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/935/54

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History

2024-06-24T08:56:10Z
Resource record created
2024-06-24T08:56:10Z
Created
2024-07-01T06:45:07Z
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