The Mysterious Dimmings of the T Tauri Star V1334 Tau

Joseph E. Rodriguez, George Zhou, Phillip A. Cargile, Daniel J. Stevens, Hugh P. Osborn, Benjamin J. Shappee, Phillip A. Reed, Michael B. Lund, Howard M. Relles, David W. Latham, Jason Eastman, Keivan G. Stassun, Allyson Bieryla, Gilbert A. Esquerdo, Perry Berlind, Michael L. Calkins, Andrew Vanderburg, Eric Gaidos, Megan Ansdell, Robert J. SiverdThomas G. Beatty, Christopher S. Kochanek, Joshua Pepper, B. Scott Gaudi, Richard G. West, Don Pollacco, David James, Rudolf B. Kuhn, Krzysztof Z. Stanek, Thomas W.S. Holoien, Jose L. Prieto, Samson A. Johnson, Anthony Sergi, Nate McCrady, John A. Johnson, Jason T. Wright, Robert A. Wittenmyer, Jonathan Horner

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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.

Original languageEnglish (US)
Article number209
JournalAstrophysical Journal
Volume836
Issue number2
DOIs
StatePublished - Feb 20 2017

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Rodriguez, J. E., Zhou, G., Cargile, P. A., Stevens, D. J., Osborn, H. P., Shappee, B. J., Reed, P. A., Lund, M. B., Relles, H. M., Latham, D. W., Eastman, J., Stassun, K. G., Bieryla, A., Esquerdo, G. A., Berlind, P., Calkins, M. L., Vanderburg, A., Gaidos, E., Ansdell, M., ... Horner, J. (2017). The Mysterious Dimmings of the T Tauri Star V1334 Tau. Astrophysical Journal, 836(2), [209]. https://doi.org/10.3847/1538-4357/aa5da5