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The PDS 110 observing campaign – photometric and spectroscopic observations reveal eclipses are aperiodic

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Osborn, H. P., Kenworthy, M., Rodriguez, J. E., de Mooij, E. J. W., Kennedy, G. M., Relles, H., Gomez, E., Hippke, M., Banfi, M., Barbieri, L. et al.
(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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Official URL: http://dx.doi.org/10.1093/mnras/stz283

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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
Subjects: Q Science > QB Astronomy
Divisions: Faculty of 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
Dates:
DateEvent
1 May 2019Published
29 January 2019Available
23 January 2019UNSPECIFIED
Date of first compliant deposit: 28 March 2019
Volume: 485
Number: 2
Page Range: pp. 1614-1625
DOI: 10.1093/mnras/stz283
Status: Peer Reviewed
Publication Status: Published
Publisher Statement: 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
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
131425-PLATOCentre National d’Etudes Spatialeshttp://dx.doi.org/10.13039/501100002830
UNSPECIFIED[MINECO] Ministerio de Economía y Competitividadhttp://dx.doi.org/10.13039/501100003329
ESP2016-80435-C2-1-R[ERDF] European Regional Development Fundhttp://dx.doi.org/10.13039/501100008530
UNSPECIFIEDGeneralitat de Catalunyahttp://dx.doi.org/10.13039/501100002809
UNSPECIFIEDCentres de Recerca de CatalunyaUNSPECIFIED
UNSPECIFIED[RS] Royal Societyhttp://dx.doi.org/10.13039/501100000288
ST/P000541/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
320964 (WDTracer)Seventh Framework Programmehttp://dx.doi.org/10.13039/100011102
GBMF5490Gordon and Betty Moore Foundationhttp://dx.doi.org/10.13039/100000936
1490409[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
UNSPECIFIEDIsaac Newton Trusthttp://dx.doi.org/10.13039/501100004815
FFABR 2017Ministero dell’Istruzione, dell’Università e della Ricercahttp://dx.doi.org/10.13039/501100003407
Mission: Sustainability 2016Università degli studi di Romahttp://viaf.org/viaf/159383153
UNSPECIFIEDUniversity of Warwickhttp://dx.doi.org/10.13039/501100000741
UNSPECIFIEDUniversity of Leicesterhttp://dx.doi.org/10.13039/501100000738
UNSPECIFIEDQueen's University Belfasthttp://dx.doi.org/10.13039/501100000873
UNSPECIFIEDUniversité de Genèvehttp://dx.doi.org/10.13039/501100006389
Großinvestition GI-NGTSDeutsches Zentrum für Luft- und Raumfahrthttp://dx.doi.org/10.13039/501100002946
UNSPECIFIED[UC] University of Cambridgehttp://dx.doi.org/10.13039/501100000735
ST/M001962/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
ST/L000733/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
ST/P000495/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
305737/2015-5Conselho Nacional de Desenvolvimento Científico e Tecnológicohttp://dx.doi.org/10.13039/501100003593
312813/2013-9Conselho Nacional de Desenvolvimento Científico e Tecnológicohttp://dx.doi.org/10.13039/501100003593
37815/2016Conselho Nacional de Desenvolvimento Científico e Tecnológicohttp://dx.doi.org/10.13039/501100003593
2016/24561-0.TLKFundação de Amparo à Pesquisa do Estado de São Paulohttp://dx.doi.org/10.13039/501100001807
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