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The Many-faceted Light Curves of Young Disk-bearing Stars in Taurus as Seen by K2

Cody, Ann Marie and Hillenbrand, Lynne A. and Rebull, Luisa M. (2022) The Many-faceted Light Curves of Young Disk-bearing Stars in Taurus as Seen by K2. Astronomical Journal, 163 (5). Art. No. 212. ISSN 0004-6256. doi:10.3847/1538-3881/ac5b73.

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We present a comprehensive study of the variability properties of young disk-bearing stars in the Taurus star-forming region, paralleling our previous investigation in ρ Oph and Upper Sco. A sample of 99 confirmed Taurus association members is placed in the diagnostic Q − M plane of flux asymmetry (M) and (Q), which guides our assignment of variability classes. We find a similar proportion of flux-symmetric variables in Taurus, but more bursters and fewer dippers relative to Upper Sco. The regions also differ in that the amplitudes for periodic and sources are larger in Taurus relative to the more evolved Upper Sco star/disk systems. The relationship between photometric variability patterns at optical wavelengths, which arise in the inner disk and at the stellar surface, are assessed relative to available disk inclination measurements.

Item Type:Article
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URLURL TypeDescription Paper
Cody, Ann Marie0000-0002-3656-6706
Rebull, Luisa M.0000-0001-6381-515X
Additional Information:© 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2022 January 10; revised 2022 March 3; accepted 2022 March 4; published 2022 April 13. We thank the referee for constructive comments. This paper includes data collected by the K2 mission, for which funding was provided by the NASA Science Mission directorate. This work was additionally supported by K2 Guest Observer program GO13117 and NASA award 80NSSC17K0026.
Group:Astronomy Department, Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:Young stellar objects; T Tauri stars; Pre-main-sequence stars; Stellar accretion; Circumstellar disks; Protoplanetary disks; Variable stars; Time domain astronomy
Issue or Number:5
Classification Code:Unified Astronomy Thesaurus concepts: Young stellar objects (1834); T Tauri stars (252); Pre-main-sequence stars (1290); Stellar accretion (1578); Circumstellar disks (235); Protoplanetary disks (1300); Variable stars (1761); Time domain astronomy (2109)
Record Number:CaltechAUTHORS:20220414-26561000
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Official Citation:Ann Marie Cody et al 2022 AJ 163 212
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:114311
Deposited By: George Porter
Deposited On:18 Apr 2022 22:42
Last Modified:18 Apr 2022 22:42

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