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More Rapidly Rotating PMS M Dwarfs with Light Curves Suggestive of Orbiting Clouds of Material

Stauffer, John and Rebull, Luisa and David, Trevor J. and Jardine, Moira and Collier Cameron, Andrew and Cody, Ann Marie and Hillenbrand, Lynne A. and Barrado, David and van Eyken, Julian and Melis, Carl and Briceño, Cesar (2018) More Rapidly Rotating PMS M Dwarfs with Light Curves Suggestive of Orbiting Clouds of Material. Astronomical Journal, 155 (2). Art. No. 63. ISSN 0004-6256. https://resolver.caltech.edu/CaltechAUTHORS:20180118-132329568

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Abstract

In a previous paper, using data from K2 Campaign 2, we identified 11 very low mass members of the ρ Oph and Upper Scorpius star-forming region as having periodic photometric variability and phased light curves showing multiple scallops or undulations. All of the stars with the "scallop-shell" light curve morphology are mid-to-late M dwarfs without evidence of active accretion and with photometric periods generally <1 day. Their phased light curves have too much structure to be attributed to non-axisymmetrically distributed photospheric spots and rotational modulation. We have now identified an additional eight probable members of the same star-forming region plus three stars in the Taurus star-forming region with this same light curve morphology and sharing the same period and spectral type range as the previous group. We describe the light curves of these new stars in detail and present their general physical characteristics. We also examine the properties of the overall set of stars in order to identify common features that might help elucidate the causes of their photometric variability.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/1538-3881/aaa19dDOIArticle
http://iopscience.iop.org/article/10.3847/1538-3881/aaa19d/metaPublisherArticle
https://arxiv.org/abs/1712.04390arXivDiscussion Paper
ORCID:
AuthorORCID
Stauffer, John0000-0003-3595-7382
Rebull, Luisa0000-0001-6381-515X
David, Trevor J.0000-0001-6534-6246
Collier Cameron, Andrew0000-0002-8863-7828
Cody, Ann Marie0000-0002-3656-6706
van Eyken, Julian0000-0003-2192-5371
Melis, Carl0000-0001-9834-7579
Additional Information:© 2018 The American Astronomical Society. Received 2017 September 20. Accepted 2017 December 11. Published 2018 January 16. Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. This research has made use of the NASA/IPAC Infrared Science Archive (IRSA), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has made use of NASA's Astrophysics Data System (ADS) Abstract Service, and of the SIMBAD database, operated at CDS, Strasbourg, France. This research has made use of data products from the Two Micron All-sky Survey (2MASS), which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, funded by the National Aeronautics and Space Administration and the National Science Foundation. The 2MASS data are served by the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. Facilities: K2 - , Exoplanet Archive - , IRSA - , 2mass - , Keck:I (HIRES) - KECK I Telescope, Hale (DBSP) - Palomar Observatory's 5.1m Hale Telescope, SOAR (Goodman) - The Southern Astrophysical Research Telescope, Shane (Kast Double spectrograph) - Lick Observatory's 3m Shane Telescope.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASANNX09AF08G
NASA/JPL/CaltechUNSPECIFIED
NSFUNSPECIFIED
Subject Keywords:stars: pre-main sequence; stars: variables: T Tauri, Herbig Ae/Be
Issue or Number:2
Record Number:CaltechAUTHORS:20180118-132329568
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180118-132329568
Official Citation:John Stauffer et al 2018 AJ 155 63
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84385
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:18 Jan 2018 21:56
Last Modified:03 Oct 2019 19:17

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