Searching for transiting cold Jupiters around bright stars with ASTEP South at Dome C, Antarctica
Much of our understanding of gas giant exoplanets come from those transiting in front of bright stars at small orbital separations (P 3 days, a 0.05 au). These hot Jupiters are coupled to their host star: stellar irradiation impacts the chemistry and temperature structure of their atmospheres and ti...
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ftorbi:oai:orbi.ulg.ac.be:2268/241368 2024-04-21T07:48:25+00:00 Searching for transiting cold Jupiters around bright stars with ASTEP South at Dome C, Antarctica Crouzet, Nicolas Mékarnia, Djamel Guillot, Tristan Bayliss, Daniel Deeg, Hans Palle, Enric Abe, Lyu Agabi, Abdelkrim Rivet, Jean-Pierre Murgas, Felipe Gillon, Michaël Delrez, Laetitia Jehin, Emmanuel Espinoza, Néstor 2019-08-01 https://orbi.uliege.be/handle/2268/241368 https://orbi.uliege.be/bitstream/2268/241368/1/poster-ESS-IV-v2.pdf en eng https://ui.adsabs.harvard.edu/abs/2019ESS.430210C https://orbi.uliege.be/handle/2268/241368 info:hdl:2268/241368 https://orbi.uliege.be/bitstream/2268/241368/1/poster-ESS-IV-v2.pdf open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Bulletin of the American Astronomical Society, Vol. 51, No. 6 (2019-08-01); Extreme Solar System IV conference, Reykjavic, Iceland [IS], 19-23 August 2019 Physical chemical mathematical & earth Sciences Space science astronomy & astrophysics Physique chimie mathématiques & sciences de la terre Aérospatiale astronomie & astrophysique conference paper http://purl.org/coar/resource_type/c_5794 info:eu-repo/semantics/conferenceObject 2019 ftorbi 2024-03-27T14:50:12Z Much of our understanding of gas giant exoplanets come from those transiting in front of bright stars at small orbital separations (P 3 days, a 0.05 au). These hot Jupiters are coupled to their host star: stellar irradiation impacts the chemistry and temperature structure of their atmospheres and tidal interactions affects the orbital dynamics and may even impact the star itself. In contrast, gas giant exoplanets with long orbital periods and large separations (P > 30 days, a > 0.2 au) are much less coupled to their host star and provide ideal benchmarks to study gas giant planets in general. However, only a few transiting "cold Jupiters" orbiting bright stars are known to date. In the past years, we conducted the ASTEP experiment (Antarctica Search for Transiting ExoPlanets) to search and characterize transiting exoplanets from Dome C, Antarctica and to qualify this site for photometry in the visible. One instrument, ASTEP South, is a 10 cm diameter lens equipped with a CCD camera in a thermalised box pointing continuously towards the celestial South pole. We analysed four winters of data collected with this instrument and identified about 30 transit candidates around relatively bright stars (9 < V < 13) with orbital periods up to 80 days. We performed photometric follow-up with the Las Cumbres Observatory (LCO) 0.4m telescopes to investigate these signals. Most of these stars are also observed by TESS and their lightcurves can be extracted from the full frame images. In this poster, we present our set of candidates, the first results of the photometric follow-up, and discuss the use of TESS data to investigate these objects. Conference Object Antarc* Antarctica South pole South pole University of Liège: ORBi (Open Repository and Bibliography) |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Space science astronomy & astrophysics Physique chimie mathématiques & sciences de la terre Aérospatiale astronomie & astrophysique |
spellingShingle |
Physical chemical mathematical & earth Sciences Space science astronomy & astrophysics Physique chimie mathématiques & sciences de la terre Aérospatiale astronomie & astrophysique Crouzet, Nicolas Mékarnia, Djamel Guillot, Tristan Bayliss, Daniel Deeg, Hans Palle, Enric Abe, Lyu Agabi, Abdelkrim Rivet, Jean-Pierre Murgas, Felipe Gillon, Michaël Delrez, Laetitia Jehin, Emmanuel Espinoza, Néstor Searching for transiting cold Jupiters around bright stars with ASTEP South at Dome C, Antarctica |
topic_facet |
Physical chemical mathematical & earth Sciences Space science astronomy & astrophysics Physique chimie mathématiques & sciences de la terre Aérospatiale astronomie & astrophysique |
description |
Much of our understanding of gas giant exoplanets come from those transiting in front of bright stars at small orbital separations (P 3 days, a 0.05 au). These hot Jupiters are coupled to their host star: stellar irradiation impacts the chemistry and temperature structure of their atmospheres and tidal interactions affects the orbital dynamics and may even impact the star itself. In contrast, gas giant exoplanets with long orbital periods and large separations (P > 30 days, a > 0.2 au) are much less coupled to their host star and provide ideal benchmarks to study gas giant planets in general. However, only a few transiting "cold Jupiters" orbiting bright stars are known to date. In the past years, we conducted the ASTEP experiment (Antarctica Search for Transiting ExoPlanets) to search and characterize transiting exoplanets from Dome C, Antarctica and to qualify this site for photometry in the visible. One instrument, ASTEP South, is a 10 cm diameter lens equipped with a CCD camera in a thermalised box pointing continuously towards the celestial South pole. We analysed four winters of data collected with this instrument and identified about 30 transit candidates around relatively bright stars (9 < V < 13) with orbital periods up to 80 days. We performed photometric follow-up with the Las Cumbres Observatory (LCO) 0.4m telescopes to investigate these signals. Most of these stars are also observed by TESS and their lightcurves can be extracted from the full frame images. In this poster, we present our set of candidates, the first results of the photometric follow-up, and discuss the use of TESS data to investigate these objects. |
format |
Conference Object |
author |
Crouzet, Nicolas Mékarnia, Djamel Guillot, Tristan Bayliss, Daniel Deeg, Hans Palle, Enric Abe, Lyu Agabi, Abdelkrim Rivet, Jean-Pierre Murgas, Felipe Gillon, Michaël Delrez, Laetitia Jehin, Emmanuel Espinoza, Néstor |
author_facet |
Crouzet, Nicolas Mékarnia, Djamel Guillot, Tristan Bayliss, Daniel Deeg, Hans Palle, Enric Abe, Lyu Agabi, Abdelkrim Rivet, Jean-Pierre Murgas, Felipe Gillon, Michaël Delrez, Laetitia Jehin, Emmanuel Espinoza, Néstor |
author_sort |
Crouzet, Nicolas |
title |
Searching for transiting cold Jupiters around bright stars with ASTEP South at Dome C, Antarctica |
title_short |
Searching for transiting cold Jupiters around bright stars with ASTEP South at Dome C, Antarctica |
title_full |
Searching for transiting cold Jupiters around bright stars with ASTEP South at Dome C, Antarctica |
title_fullStr |
Searching for transiting cold Jupiters around bright stars with ASTEP South at Dome C, Antarctica |
title_full_unstemmed |
Searching for transiting cold Jupiters around bright stars with ASTEP South at Dome C, Antarctica |
title_sort |
searching for transiting cold jupiters around bright stars with astep south at dome c, antarctica |
publishDate |
2019 |
url |
https://orbi.uliege.be/handle/2268/241368 https://orbi.uliege.be/bitstream/2268/241368/1/poster-ESS-IV-v2.pdf |
genre |
Antarc* Antarctica South pole South pole |
genre_facet |
Antarc* Antarctica South pole South pole |
op_source |
Bulletin of the American Astronomical Society, Vol. 51, No. 6 (2019-08-01); Extreme Solar System IV conference, Reykjavic, Iceland [IS], 19-23 August 2019 |
op_relation |
https://ui.adsabs.harvard.edu/abs/2019ESS.430210C https://orbi.uliege.be/handle/2268/241368 info:hdl:2268/241368 https://orbi.uliege.be/bitstream/2268/241368/1/poster-ESS-IV-v2.pdf |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
_version_ |
1796949464946049024 |