Low-amplitude blue variables; Giant and subgiant stars; Photometric; polarimetric; and spectroscopic instrumentation
Abstract :
[en] The β Cephei star HD 180642 was observed by the CoRoT satellite during a run of 156 days in 2007. The space white light photometry revealed the rich frequency spectrum of the star (Degroote et al. 2009). In the present study, we provide additional information on the target, based on both ground-based multi-colour photometry and high-resolution spectroscopy. We place our object in the (T[SUB]eff[/SUB], log g) diagram. In addition, we derive the chemical abundances of several elements as well as the metallicity of HD 180642. Finally, we put constraints on the identification of some modes. All these observational constraints will be used to compute stellar models of the target.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Briquet, Maryline ; Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
Uytterhoeven, K.; Laboratoire AIM, CEA/DSM-CNRS-Univ. Paris Diderot ; CEA, IRFU, SAp, centre de Saclay, F-91191, Gif-sur-Yvette, France ; INAF-Osservatorio Astronomico di Brera, Via E. Bianchi 46, I-23807 Merate, Italy
Morel, Thierry ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Aerts, C.; Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium ; Dep. of Astrophysics, University of Nijmegen, IMAPP, PO Box 9010, 6500 GL Nijmegen, the Netherlands
De Cat, P.; Koninklijke Sterrenwacht van België, Ringlaan 3, B-1180 Brussel, Belgium
Mathias, P.; UMR 6525 H. Fizeau, UNS, CNRS, OCA, Campus Valrose, F-06108 Nice Cedex 2, France ; Observatoire Midi Pyrenees, Laboratoire d'Astrophysique-LATT, 57 Avenue Azereix, 65000 Tarbes, France
Miglio, Andrea ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Poretti, E.; INAF-Osservatorio Astronomico di Brera, Via E. Bianchi 46, I-23807 Merate, Italy
Martin-Ruiz, S.
Paparo, M.
Rainer, M.; INAF-Osservatorio Astronomico di Brera, Via E. Bianchi 46, I-23807 Merate, Italy
Carrier, F.; Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
Gutierrez-Soto, J.
Valtier, J. C.; UMR 6525 H. Fizeau, UNS, CNRS, OCA, Campus Valrose, F-06108 Nice Cedex 2, France
Benko, J. M.
Bognar, Z.
Niemczura, E.; Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium ; Instytut Astronomiczny Wroclawski, Kopernika 11, 51-622 Wroclaw, Poland
Amado, P. J.; Instituto de AstrofÃsica de AndalucÃa (CSIC), Apdo. 3004, 18080 Granada, Spain
Suarez, J. C.
Moya, A.; Instituto de AstrofÃsica de AndalucÃa (CSIC), Apdo. 3004, 18080 Granada, Spain
Rodriguez-Lopez, C.
Garrido, R.; Instituto de AstrofÃsica de AndalucÃa (CSIC), Apdo. 3004, 18080 Granada, Spain
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