The PDS 110 observing campaign –photometric and spectroscopic observations reveal eclipses are aperiodic
Article
Article Title | The PDS 110 observing campaign –photometric and spectroscopic observations reveal eclipses are aperiodic |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Osborn, H. P. (Author), Kenworthy, M. (Author), Rodriguez, J. E. (Author), de Mooij, E. J. W. (Author), Kennedy, G. M. (Author), Relles, H. (Author), Gomez, E. (Author), Hippke, M. (Author), Banfi, M. (Author), Barbieri, L. (Author), Becker, I. S. (Author), Benni, P. (Author), Berlind, P. (Author), Bieryla, A. (Author), Bonnoli, G. (Author), Boussier, H. (Author), Brincat, S. M. (Author), Briol, J. (Author), Burleigh, M. R. (Author), Butterley, T. (Author), Calkins, M. L. (Author), Chote, P. (Author), Ciceri, S. (Author), Deldem, M. (Author), Dhillon, V. S. (Author), Dose, E. (Author), Dubois, F. (Author), Dvorak, S. (Author), Esquerdo, G. A. (Author), Evans, D. F. (Author), Ferratfiat, S. (Author), Fossey, S. J. (Author), Gunther, M. N. (Author), Hall, J. (Author), Hambsch, F. J. (Author), Herrero, E. (Author), Hills, K. (Author), James, R. (Author), Jayawardhana, R. (Author), Kafka, S. (Author), Killestein, T. L. (Author), Kotnik, C. (Author), Latham, D. W. (Author), Lemay, D. (Author), Lewin, P. (Author), Littlefair, S. (Author), Lopresti, C. (Author), Mallonn, M. (Author), Mancini, L. (Author), Marchini, A. (Author), McCormac, J. J. (Author), Murawski, G. (Author), Myers, G. (Author), Papini, R. (Author), Popov, V. (Author), Quadri, U. (Author), Quinn, S. N. (Author), Raynard, L. (Author), Rizzuti, L. (Author), Robertson, J. (Author), Salvaggio, F. (Author), Scholz, A. (Author), Sfair, R. (Author), Smith, A. M. S. (Author), Southworth, J. (Author), Tan, T. G. (Author), Vanaverbeke, S. (Author), Waagen, E. O. (Author), Watson, C. A. (Author), West, R. G. (Author), Winter, O. C. (Author), Wheatley, P. J. (Author), Wilson, R. W. (Author) and Zhou, G. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 485 (2), pp. 1614-1625 |
Number of Pages | 12 |
Year | 2019 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stz283 |
Web Address (URL) | https://academic.oup.com/mnras/article/485/2/1614/5304181 |
Abstract | PDS 110 is a young disc-hosting star in the Orion OB1A association. Two dimming events of similar depth and duration were seen in 2008 (WASP) and 2011 (KELT), consistent with an object in a closed periodic orbit. In this paper, we present data from a ground-based observing campaign designed to measure the star both photometrically and spectroscopically during the time of predicted eclipse in 2017 September. Despite high-quality photometry, the predicted eclipse did not occur, although coherent structure is present suggesting variable amounts of stellar flux or dust obscuration. We also searched for radial velocity (RV) oscillations caused by any hypothetical companion and can rule out close binaries to 0.1Ms. A search of Sonneberg plate archive data also enabled us to extend the photometric baseline of this star back more than 50 yr, and similarly does not re-detect any deep eclipses. Taken together, they suggest that the eclipses seen in WASP and KELT photometry were due to aperiodic events. It would seem that PDS 110 undergoes stochastic dimmings that are shallower and of shorter duration than those of UX Ori variables, but may have a similar mechanism. |
Keywords | Her-big Ae/Be; Protoplanetary discs; Stars: individual:PDS 110; Stars: variables: T Tauri; Astrophysics - Solar and Stellar Astrophysics; Astrophysics - Earth and Planetary Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2019 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Aix-Marseille University, France |
Leiden University, Netherlands | |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of Warwick, United Kingdom | |
Dublin City University, Ireland | |
Sonneberg Observatory, Germany | |
American Association of Variable Star Observers, United States | |
Sao Paulo State University, Brazil | |
Acton Sky Portal, United States | |
University of Siena, Italy | |
University of Leicester, United Kingdom | |
Durham University, United Kingdom | |
Stockholm University, Sweden | |
University of Sheffield, United Kingdom | |
AstroLAB IRIS, Belgium | |
Keele University, United Kingdom | |
University of London Observatory, United Kingdom | |
University of Cambridge, United Kingdom | |
Association for Astronomy, Belgium | |
Institute of Space Sciences, Spain | |
York University, Canada | |
Leibniz Institute for Astrophysics, Germany | |
University of Rome, Italy | |
Medical University of Bialystok, Poland | |
Constantine of Preslav University of Shumen, Bulgaria | |
Arkansas Tech University, United States | |
University of St Andrews, United Kingdom | |
German Aerospace Centre, Germany | |
Perth Exoplanet Survey Telescope Observatory, Australia | |
Institute of Space Studies of Catalonia (IEEC), Spain | |
Queen's University Belfast, United Kingdom |
https://research.usq.edu.au/item/q6x58/the-pds-110-observing-campaign-photometric-and-spectroscopic-observations-reveal-eclipses-are-aperiodic
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