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The PDS 110 observing campaign – photometric and spectroscopic observations reveal eclipses are aperiodic
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(2019) The PDS 110 observing campaign – photometric and spectroscopic observations reveal eclipses are aperiodic. Monthly Notices of the Royal Astronomical Society, 485 (2). pp. 1614-1625. doi:10.1093/mnras/stz283
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WRAP-PDS-observing-campaign-photometric-spectroscopic-reveal-eclipses-Wheatley-2019.pdf - Accepted Version - Requires a PDF viewer. Download (3522Kb) | Preview |
Official URL: http://dx.doi.org/10.1093/mnras/stz283
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.
| Item Type: | Journal Article | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Subjects: | Q Science > QB Astronomy | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Stars -- PDS 110 (HD 290380), Circumstellar matter | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Publisher: | Oxford University Press | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ISSN: | 0035-8711 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Official Date: | 1 May 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Volume: | 485 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Number: | 2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Page Range: | pp. 1614-1625 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.1093/mnras/stz283 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Publication Status: | Published | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reuse Statement (publisher, data, author rights): | This is a pre-copyedited, author-produced version of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record H P Osborn, M Kenworthy, J E Rodriguez, E J W de Mooij, G M Kennedy, H Relles, E Gomez, M Hippke, M Banfi, L Barbieri, I S Becker, P Benni, P Berlind, A Bieryla, G Bonnoli, H Boussier, S M Brincat, J Briol, M R Burleigh, T Butterley, M L Calkins, P Chote, S Ciceri, M Deldem, V S Dhillon, E Dose, F Dubois, S Dvorak, G A Esquerdo, D F Evans, S Ferratfiat, S J Fossey, M N Günther, J Hall, F-J Hambsch, E Herrero, K Hills, R James, R Jayawardhana, S Kafka, T L Killestein, C Kotnik, D W Latham, D Lemay, P Lewin, S Littlefair, C Lopresti, M Mallonn, L Mancini, A Marchini, J J McCormac, G Murawski, G Myers, R Papini, V Popov, U Quadri, S N Quinn, L Raynard, L Rizzuti, J Robertson, F Salvaggio, A Scholz, R Sfair, A M S Smith, J Southworth, T G Tan, S Vanaverbeke, E O Waagen, C A Watson, R G West, O C Winter, P J Wheatley, R W Wilson, G Zhou, The PDS 110 observing campaign – photometric and spectroscopic observations reveal eclipses are aperiodic, Monthly Notices of the Royal Astronomical Society, Volume 485, Issue 2, May 2019, Pages 1614–1625, https://doi.org/10.1093/mnras/stz283 is available online at: http://dx.doi.org/10.1093/mnras/stz283 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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