Periodic eclipses of the young star PDS 110 discovered with WASP and KELT photometry

Osborn, H. P.; Rodriguez, J. E.; Kenworthy, M. A.; Kennedy, G. M.; Mamajek, E. E.; Robinson, C. E.; Espaillat, C. C.; Armstrong, D. J.; Shappee, B. J.; Bieryla, A.; Latham, D. W.; Anderson, D. R.; Beatty, T. G.; Berlind, P.; Calkins, M. L.; Esquerdo, G. A.; Gaudi, B. S.; Hellier, C.; Holoien, T. W.-S.; James, D.; Kochanek, C. S.; Kuhn, R. B.; Lund, M. B.; Pepper, J.; Pollacco, D. L.; Prieto, J. L.; Siverd, R. J.; Stassun, K. G.; Stevens, D. J.; Stanek, K. Z.; West, R. G.

doi:10.1093/mnras/stx1249

Cited by 26Stellar, planetary, and galactic studiesAstrophysics and Star Formation StudiesAstronomy and Astrophysical Research

Periodic eclipses of the young star PDS 110 discovered with WASP and KELT photometry

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Osborn, H. P., Rodriguez, J. E., Kenworthy, M. A., Kennedy, G. M., Mamajek, E. E., Robinson, C. E., Espaillat, C. C., Armstrong, D. J. +23 more·2017·Monthly Notices of the Royal Astronomical Society

DOI 10.1093/mnras/stx1249

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Abstract

We report the discovery of eclipses by circumstellar disc material associated with the young star PDS 110 in the Ori OB1a association using the SuperWASP and Kilodegree Extremely Little Telescope surveys. PDS 110 (HD 290380, IRAS 05209-0107) is a rare Fe/Ge-type star, an ∼10 Myr-old accreting intermediate-mass star showing strong infrared excess (LIR/Lbol ≃ 0.25). Two extremely similar eclipses with a depth of 30 per cent and duration ∼25 d were observed in 2008 November and 2011 January. We interpret the eclipses as caused by the same structure with an orbital period of 808 ± 2 d. Shearing over a single orbit rules out diffuse dust clumps as the cause, favouring the hypothesis of a companion at ∼2 au. The characteristics of the eclipses are consistent with transits by an unseen low-mass (1.8–70 MJup) planet or brown dwarf with a circumsecondary disc of diameter ∼0.3 au. The next eclipse event is predicted to take place in 2017 September and could be monitored by amateur and professional observatories across the world.

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PDS 110 exhibited two extended, deep eclipses with a duration of approximately 25 days, separated by about 808 days.
“It exhibited two extended, deep eclipses with a duration of approximately 25 days, which were separated by about 808 days.”
From Beyond Circular Eclipsers (BeyonCE) light curve modelling (2024) · cites this paper as Osborn et al. (2017)
The eclipses of PDS 110 were interpreted as the result of the transit of a circumsecondary disc around an unseen companion, PDS 110 b.
“These eclipses were studied by Osborn et al. (2017) and were interpreted as the result of the transit of a circumsecondary disc around an unseen companion, PDS 110 b.”
From Beyond Circular Eclipsers (BeyonCE) light curve modelling (2024) · cites this paper as Osborn et al. (2017)

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The 3rd Mexico-Korea Conference on Astrophysics : telescopes of the future and San Pedro Mártir
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Authors: Osborn, H. P., Rodriguez, J. E., Kenworthy, M. A., Kennedy, G. M., Mamajek, E. E., Robinson, C. E., Espaillat, C. C., Armstrong, D. J., Shappee, B. J., Bieryla, A., Latham, D. W., Anderson, D. R., Beatty, T. G., Berlind, P., Calkins, M. L., Esquerdo, G. A., Gaudi, B. S., Hellier, C., Holoien, T. W.-S., James, D., Kochanek, C. S., Kuhn, R. B., Lund, M. B., Pepper, J., Pollacco, D. L., Prieto, J. L., Siverd, R. J., Stassun, K. G., Stevens, D. J., Stanek, K. Z., & West, R. G.
Affiliations: University of Warwick (GB)
Center for Astrophysics Harvard & Smithsonian (US)
Leiden University (NL)
University of Cambridge (GB)
California Institute of Technology (US)
Boston University (US)
Queen's University Belfast (GB)
Las Cumbres Observatory Global Telescope Network (US)
Keele University (GB)
Pennsylvania State University (US)
The Ohio State University (US)
University of Washington (US)
South African Astronomical Observatory (ZA)
Vanderbilt University (US)
Lehigh University (US)
Millennium Institute of Astrophysics (CL)
Corresponding author: Osborn, H. P.
Shappee, B. J.
Holoien, T. W.-S.
ORCID: Osborn, H. P.
Rodriguez, J. E.
Kenworthy, M. A.
Kennedy, G. M.
Mamajek, E. E.
Robinson, C. E.
Espaillat, C. C.
Armstrong, D. J.
Shappee, B. J.
Bieryla, A.
Latham, D. W.
Anderson, D. R.
Beatty, T. G.
Calkins, M. L.
Esquerdo, G. A.
Gaudi, B. S.
Hellier, C.
Holoien, T. W.-S.
James, D.
Kochanek, C. S.
Kuhn, R. B.
Lund, M. B.
Pepper, J.
Pollacco, D. L.
Prieto, J. L.
Siverd, R. J.
Stassun, K. G.
Stevens, D. J.
West, R. G.
Venue: Monthly Notices of the Royal Astronomical Society
Publisher: Oxford University Press (OUP)
Published: 2017-05-20
Volume: 471
Issue: 1
Pages: 740-749
ISSN: 0035-8711 (ISSN-L)
1365-2966
DOI: 10.1093/mnras/stx1249
OpenAlex: W2614866025
Cited by: 26
References: 85
Citations by year: 2026: 1 · 2025: 1 · 2024: 3 · 2023: 1 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 3 · 2018: 7 · 2017: 3
FWCI: 2.34
Type: journal article
Language: en
Open access: bronze
doi.org
Locations: Monthly Notices of the Royal Astronomical Society (publishedVersion)
arXiv (Cornell University) (submittedVersion)
Leiden Repository (Leiden University) (submittedVersion)
Keele Research Repository (Keele University) (submittedVersion, cc-by)
Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
arXiv (Cornell University)
Funders: National Science Foundation (DE-FG02-97ER25308, 1358862, 1515876, 1056524, 1515927)
U.S. Department of Energy (DEFG0297ER25308, FG02-97ER25308)
National Aeronautics and Space Administration (NNG04GO70G)
Vanderbilt University
California Institute of Technology
University of Warwick
European Commission (313014)
Universiteit Leiden
Jet Propulsion Laboratory
Topics: Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysics and Star Formation Studies
Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
Keywords: eclipsing binaries, circumstellar disks, young stars, intermediate-mass stars, accretion, infrared excess, planetary transits, brown dwarf companions, orbital period, SuperWASP

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Periodic eclipses of the young star PDS 110 discovered with WASP and KELT photometry

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