NAGIOS: RODERIC FUNCIONANDO

The pulsations of the B5IVe star HD 181 231 observed with CoRoT and ground-based spectroscopy

Repositori DSpace/Manakin

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

The pulsations of the B5IVe star HD 181 231 observed with CoRoT and ground-based spectroscopy

dc.contributor.author	Neiner, C.
dc.contributor.author	Gutiérrez Soto, Juan
dc.contributor.author	Baudin, F.
dc.contributor.author	De Batz, B.
dc.contributor.author	Frémat, Y.
dc.contributor.author	Huat, A. L.
dc.contributor.author	Floquet, M.
dc.contributor.author	Hubert, A. M.
dc.contributor.author	Leroy, B.
dc.contributor.author	Diago Nebot, Pascual David
dc.contributor.author	Poretti, E.
dc.contributor.author	Carrier, F.
dc.contributor.author	Rainer, M.
dc.contributor.author	Catala, C.
dc.contributor.author	Thizy, O.
dc.contributor.author	Buil, C.
dc.contributor.author	Ribeiro, J.
dc.contributor.author	Andrade, L.
dc.contributor.author	Emilio, M.
dc.contributor.author	Espinosa-Lara, F.
dc.contributor.author	Fabregat Llueca, Juan
dc.contributor.author	Janot-Pacheco, E.
dc.contributor.author	Martayan, C.
dc.contributor.author	Semaan, T.
dc.contributor.author	Suso, J.
dc.contributor.author	Baglin, A.
dc.contributor.author	Michel, E.
dc.contributor.author	Samadi, R.
dc.date.accessioned	2015-10-16T17:21:44Z
dc.date.available	2015-10-16T17:21:44Z
dc.date.issued	2009
dc.identifier.citation	Neiner, C. Gutierrez Soto, Juan Baudin, F. De Batz, B. Frémat, Y. Huat, A.L. Floquet, M. Hubert, A.M. Leroy, B. Diago Nebot, Pascual David Poretti, E. Carrier, F. Rainer, M. Catala, C. Thizy, O. Buil, C. Ribeiro, J. Andrade, L. Emilio, M. Espinosa-Lara, F. Fabregat Llueca, Juan Janot-Pacheco, E. Martayan, C. Semaan, T. Suso, J. Baglin, A. Michel, E. Samadi, R. 2009 The pulsations of the B5IVe star HD 181 231 observed with CoRoT and ground-based spectroscopy Astronomy and Astrophysics
dc.identifier.uri	http://hdl.handle.net/10550/47750
dc.description.abstract	Context. HD 181231 is a B5IVe star, which has been observed with the CoRoT satellite during ∼5 consecutive months and simultaneously from the ground in spectroscopy and spectropolarimetry. Aims. By analysing these data, we aim to detect and characterize as many pulsation frequencies as possible, to search for the presence of beating effects possibly at the origin of the Be phenomenon. Our results will also pr ovide a basis for seismic modelling. Methods. The fundamental parameters of the star are determined from spectral fitting and from the study of the circumstellar emission. The CoRoT photometric data and ground-based spectroscopy are analysed using several Fourier Techniques: CLEAN-NG,PASPER,and TISAFT, as well as a time-frequency technique. A search for a magnetic field is performed by applying the LSD technique to the spectropolarimetric data. Results. We find that HD 181231 is a B5IVe star seen with an inclination of ∼45 degrees. No magnetic field is detected in its photo-sphere. We detect at least 10 independent significant frequencies of variations among the 54 detected frequencies, interpreted in termsof non-radial pulsation modes and rotation. Two longer-term variations are also detected: one at ∼14 days resulting from a beating effect between the two main frequencies of short-term variations, the other at ∼116 days due either to a beating of frequencies or to a zonal pulsation mode. Conclusions. Our analysis of the CoRoT light curve and ground-based spectroscopic data of HD 181231 has led to the determination of the fundamental and pulsational parameters of the star, including beating effects. This will allow a precise seismic modelling of this star.
dc.language.iso	eng
dc.relation.ispartof	Astronomy and Astrophysics, 2009
dc.subject	Astronomia
dc.subject	Ciència Ensenyament
dc.title	The pulsations of the B5IVe star HD 181 231 observed with CoRoT and ground-based spectroscopy
dc.type	journal article	es_ES
dc.date.updated	2015-10-16T17:21:44Z
dc.identifier.idgrec	048712
dc.rights.accessRights	open access	es_ES