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

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

doi:10.1093/mnras/stz283

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

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

School of Mathematics and Physics

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Abstract

PDS 110 is a young disk-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 September 2017. 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 RV oscillations caused by any hypothetical companion and can rule out close binaries to 0.1 Ms. A search of Sonneberg plate archive data also enabled us to extend the photometric baseline of this star back more than 50 years, 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 shorter-duration than those of UX Ori variables, but may have a similar mechanism.

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society, Advance Access
Early online date	29 Jan 2019
DOIs	https://doi.org/10.1093/mnras/stz283
Publication status	Early online date - 29 Jan 2019

Keywords

stars:individual:PDS 110
stars: variables: T Tauri
protoplanetary discs

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10.1093/mnras/stz283Licence: Unspecified

The PDS 110 observing campaign – photometric and spectroscopic observations reveal eclipses are aperiodic
© 2019 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 4.43 MBLicence: Unspecified

http://adsabs.harvard.edu/abs/2019MNRAS.tmp..287O

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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., Becker, I. S., Benni, P., Berlind, P., Bieryla, A., Bonnoli, G., Boussier, H., Brincat, S. M., Briol, J., Burleigh, M. R., ... Zhou, G. (2019). The PDS 110 observing campaign - photometric and spectroscopic observations reveal eclipses are aperiodic. Monthly Notices of the Royal Astronomical Society, Advance Access. Advance online publication. https://doi.org/10.1093/mnras/stz283

@article{015bbb6d89224b2886220e547083995c,

title = "The PDS 110 observing campaign - photometric and spectroscopic observations reveal eclipses are aperiodic",

abstract = "PDS 110 is a young disk-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 September 2017. 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 RV oscillations caused by any hypothetical companion and can rule out close binaries to 0.1 Ms. A search of Sonneberg plate archive data also enabled us to extend the photometric baseline of this star back more than 50 years, 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 shorter-duration than those of UX Ori variables, but may have a similar mechanism.",

keywords = "stars:individual:PDS 110, stars: variables: T Tauri, protoplanetary discs",

author = "Osborn, \{H. P.\} and M. Kenworthy and Rodriguez, \{J. E.\} and \{de Mooij\}, \{E. J. W.\} and Kennedy, \{G. M.\} and H. Relles and E. Gomez and M. Hippke and M. Banfi and L. Barbieri and Becker, \{I. S.\} and P. Benni and P. Berlind and A. Bieryla and G. Bonnoli and H. Boussier and Brincat, \{S. M.\} and J. Briol and Burleigh, \{M. R.\} and T. Butterley and Calkins, \{M. L.\} and P. Chote and S. Ciceri and M. Deldem and Dhillon, \{V. S.\} and E. Dose and F. Dubois and S. Dvorak and Esquerdo, \{G. A.\} and Evans, \{D. F.\} and S. Ferratfiat and Fossey, \{S. J.\} and G{\"u}nther, \{M. N.\} and J. Hall and F.-J. Hambsch and E. Herrero and K. Hills and R. James and R. Jayawardhana and S. Kafka and Killestein, \{T. L.\} and C. Kotnik and Latham, \{D. W.\} and D. Lemay and P. Lewin and S. Littlefair and C. Lopresti and M. Mallonn and L. Mancini and A. Marchini and McCormac, \{J. J.\} and G. Murawski and G. Myers and R. Papini and V. Popov and U. Quadri and Quinn, \{S. N.\} and L. Raynard and L. Rizzuti and J. Robertson and F. Salvaggio and A. Scholz and R. Sfair and Smith, \{A. M. S.\} and J. Southworth and Tan, \{T. G.\} and S. Vanaverbeke and Waagen, \{E. O.\} and Watson, \{C. A.\} and West, \{R. G.\} and Winter, \{O. C.\} and Wheatley, \{P. J.\} and Wilson, \{R. W.\} and G. Zhou",

year = "2019",

month = jan,

day = "29",

doi = "10.1093/mnras/stz283",

language = "English",

journal = "Monthly Notices of the Royal Astronomical Society, Advance Access",

issn = "0035-8711",

publisher = "Oxford University Press",

}

Osborn, HP, Kenworthy, M, Rodriguez, JE, de Mooij, EJW, Kennedy, GM, Relles, H, Gomez, E, Hippke, M, Banfi, M, Barbieri, L, Becker, IS, Benni, P, Berlind, P, Bieryla, A, Bonnoli, G, Boussier, H, Brincat, SM, Briol, J, Burleigh, MR, Butterley, T, Calkins, ML, Chote, P, Ciceri, S, Deldem, M, Dhillon, VS, Dose, E, Dubois, F, Dvorak, S, Esquerdo, GA, Evans, DF, Ferratfiat, S, Fossey, SJ, Günther, MN, Hall, J, Hambsch, F-J, Herrero, E, Hills, K, James, R, Jayawardhana, R, Kafka, S, Killestein, TL, Kotnik, C, Latham, DW, Lemay, D, Lewin, P, Littlefair, S, Lopresti, C, Mallonn, M, Mancini, L, Marchini, A, McCormac, JJ, Murawski, G, Myers, G, Papini, R, Popov, V, Quadri, U, Quinn, SN, Raynard, L, Rizzuti, L, Robertson, J, Salvaggio, F, Scholz, A, Sfair, R, Smith, AMS, Southworth, J, Tan, TG, Vanaverbeke, S, Waagen, EO, Watson, CA, West, RG, Winter, OC, Wheatley, PJ, Wilson, RW & Zhou, G 2019, 'The PDS 110 observing campaign - photometric and spectroscopic observations reveal eclipses are aperiodic', Monthly Notices of the Royal Astronomical Society, Advance Access. https://doi.org/10.1093/mnras/stz283

TY - JOUR

T1 - The PDS 110 observing campaign - photometric and spectroscopic observations reveal eclipses are aperiodic

AU - Osborn, H. P.

AU - Kenworthy, M.

AU - Rodriguez, J. E.

AU - de Mooij, E. J. W.

AU - Kennedy, G. M.

AU - Relles, H.

AU - Gomez, E.

AU - Hippke, M.

AU - Banfi, M.

AU - Barbieri, L.

AU - Becker, I. S.

AU - Benni, P.

AU - Berlind, P.

AU - Bieryla, A.

AU - Bonnoli, G.

AU - Boussier, H.

AU - Brincat, S. M.

AU - Briol, J.

AU - Burleigh, M. R.

AU - Butterley, T.

AU - Calkins, M. L.

AU - Chote, P.

AU - Ciceri, S.

AU - Deldem, M.

AU - Dhillon, V. S.

AU - Dose, E.

AU - Dubois, F.

AU - Dvorak, S.

AU - Esquerdo, G. A.

AU - Evans, D. F.

AU - Ferratfiat, S.

AU - Fossey, S. J.

AU - Günther, M. N.

AU - Hall, J.

AU - Hambsch, F.-J.

AU - Herrero, E.

AU - Hills, K.

AU - James, R.

AU - Jayawardhana, R.

AU - Kafka, S.

AU - Killestein, T. L.

AU - Kotnik, C.

AU - Latham, D. W.

AU - Lemay, D.

AU - Lewin, P.

AU - Littlefair, S.

AU - Lopresti, C.

AU - Mallonn, M.

AU - Mancini, L.

AU - Marchini, A.

AU - McCormac, J. J.

AU - Murawski, G.

AU - Myers, G.

AU - Papini, R.

AU - Popov, V.

AU - Quadri, U.

AU - Quinn, S. N.

AU - Raynard, L.

AU - Rizzuti, L.

AU - Robertson, J.

AU - Salvaggio, F.

AU - Scholz, A.

AU - Sfair, R.

AU - Smith, A. M. S.

AU - Southworth, J.

AU - Tan, T. G.

AU - Vanaverbeke, S.

AU - Waagen, E. O.

AU - Watson, C. A.

AU - West, R. G.

AU - Winter, O. C.

AU - Wheatley, P. J.

AU - Wilson, R. W.

AU - Zhou, G.

PY - 2019/1/29

Y1 - 2019/1/29

N2 - PDS 110 is a young disk-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 September 2017. 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 RV oscillations caused by any hypothetical companion and can rule out close binaries to 0.1 Ms. A search of Sonneberg plate archive data also enabled us to extend the photometric baseline of this star back more than 50 years, 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 shorter-duration than those of UX Ori variables, but may have a similar mechanism.

AB - PDS 110 is a young disk-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 September 2017. 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 RV oscillations caused by any hypothetical companion and can rule out close binaries to 0.1 Ms. A search of Sonneberg plate archive data also enabled us to extend the photometric baseline of this star back more than 50 years, 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 shorter-duration than those of UX Ori variables, but may have a similar mechanism.

KW - stars:individual:PDS 110

KW - stars: variables: T Tauri

KW - protoplanetary discs

U2 - 10.1093/mnras/stz283

DO - 10.1093/mnras/stz283

M3 - Article

SN - 0035-8711

JO - Monthly Notices of the Royal Astronomical Society, Advance Access

JF - Monthly Notices of the Royal Astronomical Society, Advance Access

ER -

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

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Keywords

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