Rodriguez, Joseph E. and Zhou, George and Cargile, Phillip A. and Stevens, Daniel J. and Osborn, Hugh P. and Shappee, Benjamin J. and Reed, Phillip A. and Lund, Michael B. and Relles, Howard M. and Latham, David W. and Eastman, Jason and Stassun, Keivan G. and Bieryla, Allyson and Esquerdo, Gilbert A. and Berlind, Perry and Calkins, Michael L. and Vanderburg, Andrew and Gaidos, Eric and Ansdell, Megan and Siverd, Robert J. and Beatty, Thomas G. and Kochanek, Christopher S. and Pepper, Joshua and Gaudi, B. Scott and West, Richard G. and Pollaco, Don and James, David and Kuhn, Rudolph B. and Stanek, Krzysztof Z. and Holoien, Thomas W.-S. and Prieto, Jose L. and Johnson, Samson A. and Sergi, Anthony and McCrady, Nate and Johnson, John A. and Wright, Jason T. and Wittenmyer, Robert A. and Horner, Jonathan (2017) The mysterious dimmings of the T Tauri star V1334 Tau. The Astrophysical Journal, 836 (2). ISSN 0004-637X
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Abstract
We present the discovery of two extended ˜0.12 mag dimming events of the weak-lined T Tauri star V1334. The start of the first event was missed but came to an end in late 2003, and the second began in 2009 February, and continues as of 2016 November. Since the egress of the current event has not yet been observed, it suggests a period of >13 years if this event is periodic. Spectroscopic observations suggest the presence of a small inner disk, although the spectral energy distribution shows no infrared excess. We explore the possibility that the dimming events are caused by an orbiting body (e.g., a disk warp or dust trap), enhanced disk winds, hydrodynamical fluctuations of the inner disk, or a significant increase in the magnetic field flux at the surface of the star. We also find a ˜0.32 day periodic photometric signal that persists throughout the 2009 dimming which appears to not be due to ellipsoidal variations from a close stellar companion. High-precision photometric observations of V1334 Tau during K2 campaign 13, combined with simultaneous photometric and spectroscopic observations from the ground, will provide crucial information about the photometric variability and its origin.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Access to Published version allowed due to publisher copyright policy. |
| Faculty / Department / School: | Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences |
| Date Deposited: | 11 Aug 2017 06:13 |
| Last Modified: | 26 Apr 2018 23:19 |
| Uncontrolled Keywords: | circumstellar matter, protoplanetary disks, V1334 Tau, T Tauri |
| Fields of Research : | 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems |
| Socio-Economic Objective: | E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences |
| Identification Number or DOI: | 10.3847/1538-4357/aa5da5 |
| URI: | http://eprints.usq.edu.au/id/eprint/32682 |
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