Multi-site campaign for transit timing variations of WASP-12 b: Possible detection of a long-period signal of planetary origin a long-period signal of planetary origin
Aims: The transiting planet WASP-12 b was identified as a potential target for transit-timing studies because a departure from a linear ephemeris has been reported in the literature. Such deviations could be caused by an additional planet in the system. We attempt to confirm the claimed variations i...
Published in: | Astronomy & Astrophysics |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | http://hdl.handle.net/2108/204853 https://doi.org/10.1051/0004-6361/201220739 |
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ftunivromatorver:oai:art.torvergata.it:2108/204853 2024-02-27T08:42:03+00:00 Multi-site campaign for transit timing variations of WASP-12 b: Possible detection of a long-period signal of planetary origin a long-period signal of planetary origin Maciejewski G. Dimitrov D. Seeliger M. Raetz S. Bukowiecki L. Kitze M. Errmann R. Nowak G. Niedzielski A. Popov V. Marka C. Gozdziewski K. Neuhauser R. Ohlert J. Hinse T. C. Lee J. W. Lee C. -U. Yoon J. -N. Berndt A. Gilbert H. Ginski C. Hohle M. M. Mugrauer M. Roll T. Schmidt T. O. B. Tetzlaff N. Mancini L. Southworth J. Dall'Ora M. Ciceri S. Zambelli R. Corfini G. Takahashi H. Tachihara K. Benko J. M. Sarneczky K. Szabo G. M. Varga T. N. Vanko M. Joshi Y. C. Chen W. P. Maciejewski, G Dimitrov, D Seeliger, M Raetz, S Bukowiecki, L Kitze, M Errmann, R Nowak, G Niedzielski, A Popov, V Marka, C Gozdziewski, K Neuhauser, R Ohlert, J Hinse, Tc Lee, Jw Lee, C- Yoon, J- Berndt, A Gilbert, H Ginski, C Hohle, Mm Mugrauer, M Roll, T Schmidt, Tob Tetzlaff, N Mancini, L Southworth, J Dall'Ora, M Ciceri, S Zambelli, R Corfini, G Takahashi, H Tachihara, K Benko, Jm Sarneczky, K Szabo, Gm Varga, Tn Vanko, M Joshi, Yc Chen, Wp 2013 http://hdl.handle.net/2108/204853 https://doi.org/10.1051/0004-6361/201220739 eng eng Edp Sciences country:FR info:eu-repo/semantics/altIdentifier/wos/WOS:000316460600108 volume:551 firstpage:A108 journal:ASTRONOMY & ASTROPHYSICS http://hdl.handle.net/2108/204853 doi:10.1051/0004-6361/201220739 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84874600719 Settore FIS/05 - ASTRONOMIA E ASTROFISICA info:eu-repo/semantics/article 2013 ftunivromatorver https://doi.org/10.1051/0004-6361/201220739 2024-01-31T00:13:23Z Aims: The transiting planet WASP-12 b was identified as a potential target for transit-timing studies because a departure from a linear ephemeris has been reported in the literature. Such deviations could be caused by an additional planet in the system. We attempt to confirm the claimed variations in transit timing and interpret their origin. Methods: We organised a multi-site campaign to observe transits by WASP-12 b in three observing seasons, using 0.5-2.6-metre telescopes. Results: We obtained 61 transit light curves, many of them with sub-millimagnitude precision. The simultaneous analysis of the best-quality datasets allowed us to obtain refined system parameters, which agree with values reported in previous studies. The residuals versus a linear ephemeris reveal a possible periodic signal that may be approximated by a sinusoid with an amplitude of 0.00068 ± 0.00013 d and period of 500 ± 20 orbital periods of WASP-12 b. The joint analysis of timing data and published radial velocity measurements results in a two-planet model that explains observations better than do single-planet scenarios. We hypothesise that WASP-12 b might not be the only planet in the system, and there might be the additional 0.1 M Jup body on a 3.6-d eccentric orbit. A dynamical analysis indicates that the proposed two-planet system is stable on long timescales. Partly based on (1) data collected with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias, (2) observations made at the Centro Astronómico Hispano Alemán (CAHA), operated jointly by the Max-Planck Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC), (3) data collected with telescopes at the Rozhen National Astronomical Observatory, and (4) observations obtained with telescopes of the University Observatory Jena, which is operated by the Astrophysical Institute of the ... Article in Journal/Newspaper Iceland Universitá degli Studi di Roma "Tor Vergata": ART - Archivio Istituzionale della Ricerca Norway Observatorio ENVELOPE(-62.993,-62.993,-64.330,-64.330) Astronomy & Astrophysics 551 A108 |
institution |
Open Polar |
collection |
Universitá degli Studi di Roma "Tor Vergata": ART - Archivio Istituzionale della Ricerca |
op_collection_id |
ftunivromatorver |
language |
English |
topic |
Settore FIS/05 - ASTRONOMIA E ASTROFISICA |
spellingShingle |
Settore FIS/05 - ASTRONOMIA E ASTROFISICA Maciejewski G. Dimitrov D. Seeliger M. Raetz S. Bukowiecki L. Kitze M. Errmann R. Nowak G. Niedzielski A. Popov V. Marka C. Gozdziewski K. Neuhauser R. Ohlert J. Hinse T. C. Lee J. W. Lee C. -U. Yoon J. -N. Berndt A. Gilbert H. Ginski C. Hohle M. M. Mugrauer M. Roll T. Schmidt T. O. B. Tetzlaff N. Mancini L. Southworth J. Dall'Ora M. Ciceri S. Zambelli R. Corfini G. Takahashi H. Tachihara K. Benko J. M. Sarneczky K. Szabo G. M. Varga T. N. Vanko M. Joshi Y. C. Chen W. P. Multi-site campaign for transit timing variations of WASP-12 b: Possible detection of a long-period signal of planetary origin a long-period signal of planetary origin |
topic_facet |
Settore FIS/05 - ASTRONOMIA E ASTROFISICA |
description |
Aims: The transiting planet WASP-12 b was identified as a potential target for transit-timing studies because a departure from a linear ephemeris has been reported in the literature. Such deviations could be caused by an additional planet in the system. We attempt to confirm the claimed variations in transit timing and interpret their origin. Methods: We organised a multi-site campaign to observe transits by WASP-12 b in three observing seasons, using 0.5-2.6-metre telescopes. Results: We obtained 61 transit light curves, many of them with sub-millimagnitude precision. The simultaneous analysis of the best-quality datasets allowed us to obtain refined system parameters, which agree with values reported in previous studies. The residuals versus a linear ephemeris reveal a possible periodic signal that may be approximated by a sinusoid with an amplitude of 0.00068 ± 0.00013 d and period of 500 ± 20 orbital periods of WASP-12 b. The joint analysis of timing data and published radial velocity measurements results in a two-planet model that explains observations better than do single-planet scenarios. We hypothesise that WASP-12 b might not be the only planet in the system, and there might be the additional 0.1 M Jup body on a 3.6-d eccentric orbit. A dynamical analysis indicates that the proposed two-planet system is stable on long timescales. Partly based on (1) data collected with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias, (2) observations made at the Centro Astronómico Hispano Alemán (CAHA), operated jointly by the Max-Planck Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC), (3) data collected with telescopes at the Rozhen National Astronomical Observatory, and (4) observations obtained with telescopes of the University Observatory Jena, which is operated by the Astrophysical Institute of the ... |
author2 |
Maciejewski, G Dimitrov, D Seeliger, M Raetz, S Bukowiecki, L Kitze, M Errmann, R Nowak, G Niedzielski, A Popov, V Marka, C Gozdziewski, K Neuhauser, R Ohlert, J Hinse, Tc Lee, Jw Lee, C- Yoon, J- Berndt, A Gilbert, H Ginski, C Hohle, Mm Mugrauer, M Roll, T Schmidt, Tob Tetzlaff, N Mancini, L Southworth, J Dall'Ora, M Ciceri, S Zambelli, R Corfini, G Takahashi, H Tachihara, K Benko, Jm Sarneczky, K Szabo, Gm Varga, Tn Vanko, M Joshi, Yc Chen, Wp |
format |
Article in Journal/Newspaper |
author |
Maciejewski G. Dimitrov D. Seeliger M. Raetz S. Bukowiecki L. Kitze M. Errmann R. Nowak G. Niedzielski A. Popov V. Marka C. Gozdziewski K. Neuhauser R. Ohlert J. Hinse T. C. Lee J. W. Lee C. -U. Yoon J. -N. Berndt A. Gilbert H. Ginski C. Hohle M. M. Mugrauer M. Roll T. Schmidt T. O. B. Tetzlaff N. Mancini L. Southworth J. Dall'Ora M. Ciceri S. Zambelli R. Corfini G. Takahashi H. Tachihara K. Benko J. M. Sarneczky K. Szabo G. M. Varga T. N. Vanko M. Joshi Y. C. Chen W. P. |
author_facet |
Maciejewski G. Dimitrov D. Seeliger M. Raetz S. Bukowiecki L. Kitze M. Errmann R. Nowak G. Niedzielski A. Popov V. Marka C. Gozdziewski K. Neuhauser R. Ohlert J. Hinse T. C. Lee J. W. Lee C. -U. Yoon J. -N. Berndt A. Gilbert H. Ginski C. Hohle M. M. Mugrauer M. Roll T. Schmidt T. O. B. Tetzlaff N. Mancini L. Southworth J. Dall'Ora M. Ciceri S. Zambelli R. Corfini G. Takahashi H. Tachihara K. Benko J. M. Sarneczky K. Szabo G. M. Varga T. N. Vanko M. Joshi Y. C. Chen W. P. |
author_sort |
Maciejewski G. |
title |
Multi-site campaign for transit timing variations of WASP-12 b: Possible detection of a long-period signal of planetary origin a long-period signal of planetary origin |
title_short |
Multi-site campaign for transit timing variations of WASP-12 b: Possible detection of a long-period signal of planetary origin a long-period signal of planetary origin |
title_full |
Multi-site campaign for transit timing variations of WASP-12 b: Possible detection of a long-period signal of planetary origin a long-period signal of planetary origin |
title_fullStr |
Multi-site campaign for transit timing variations of WASP-12 b: Possible detection of a long-period signal of planetary origin a long-period signal of planetary origin |
title_full_unstemmed |
Multi-site campaign for transit timing variations of WASP-12 b: Possible detection of a long-period signal of planetary origin a long-period signal of planetary origin |
title_sort |
multi-site campaign for transit timing variations of wasp-12 b: possible detection of a long-period signal of planetary origin a long-period signal of planetary origin |
publisher |
Edp Sciences |
publishDate |
2013 |
url |
http://hdl.handle.net/2108/204853 https://doi.org/10.1051/0004-6361/201220739 |
long_lat |
ENVELOPE(-62.993,-62.993,-64.330,-64.330) |
geographic |
Norway Observatorio |
geographic_facet |
Norway Observatorio |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000316460600108 volume:551 firstpage:A108 journal:ASTRONOMY & ASTROPHYSICS http://hdl.handle.net/2108/204853 doi:10.1051/0004-6361/201220739 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84874600719 |
op_doi |
https://doi.org/10.1051/0004-6361/201220739 |
container_title |
Astronomy & Astrophysics |
container_volume |
551 |
container_start_page |
A108 |
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1792049439737643008 |