期刊
ASTROPHYSICAL JOURNAL
卷 836, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/aa5da5
关键词
circumstellar matter; protoplanetary disks; stars: individual (V1334 Tau); stars: pre-main sequence; stars: variables: T Tauri, Herbig Ae/Be
资金
- NASA [NNG04GO70G, NNX13AI46G, NAS 5-26555]
- Vanderbilt Office of the Provost through the Vanderbilt Initiative in Data-intensive Astrophysics
- Harvard Future Faculty Leaders Postdoctoral fellowship
- NSF PAARE [AST-1358862]
- NASA through Hubble Fellowship - Space Telescope Science Institute [HF-51348.001]
- NSF [AST-1515876, AST-1515927, AST-0908816]
- DOE Computational Science Graduate Fellowship [DE-FG02-97ER25308]
- NSF CAREER [AST-1056524]
- CCAPP at the Ohio State University
- Center for Cosmology and AstroParticle Physics (CCAPP) at OSU
- Mt. Cuba Astronomical Foundation
- George Skestos
- Robert Martin Ayers Sciences Fund
- National Aeronautics and Space Administration (EPSCOR) [NNX13AM97A]
- Australian Research Council (LIEF) [LE140100050]
- National Science Foundation [1516242, 1608203]
- Center for Exoplanets and Habitable Worlds
- Pennsylvania State University
- Eberly College of Science
- Pennsylvania Space Grant Consortium
- STFC [ST/L000733/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000733/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1516242] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1515876, 1608203] Funding Source: National Science Foundation
- Australian Research Council [LE140100050] Funding Source: Australian Research Council
We present the discovery of two extended similar to 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 similar to 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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