Balloon 090100001: A bright, high amplitude sdB pulsator
R. Oreiro,R. Oreiro,Ana Ulla,F. Pérez Hernández,F. Pérez Hernández,Roy Ostensen,C. Rodríguez López,James M. MacDonald +7 more
TLDR
In this paper, the authors reported the discovery of pulsations in the light curve of Balloon 090100001, a bright sdB star from the balloon-borne survey of Bixler et al.Abstract:
We report the discovery of pulsations in the light curve of Balloon 090100001, a bright sdB star () from the balloon-borne survey of Bixler et al. (1991). Our time series observations made with the IAC80 telescope reveal a powerful short period oscillation with a period of 356 s and an amplitude (~59 mmag) only matched in all of the sdB pulsators by the main pulsation of PG 1605+072. The first harmonic (at 178 s) and another independent period (at 264 s) are also present in the amplitude spectrum of this new EC 14026 star. New spectroscopic data from the William Herschel Telescope provide the parameters K and dex. These place Balloon 090100001 in the low temperature and low gravity corner of the sdBV instability region, making it an interesting target for study of possible frequency changes due to stellar evolution.read more
Citations
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Journal ArticleDOI
First Kepler results on compact pulsators - I. Survey target selection and the first pulsators
Roy Ostensen,Roberto Silvotti,Stéphane Charpinet,R. Oreiro,R. Oreiro,Gerald Handler,Elizabeth M. Green,Steven Bloemen,Ulrich Heber,Boris T. Gänsicke,Tom Marsh,D. W. Kurtz,John H. Telting,Michael D. Reed,Steven D. Kawaler,Conny Aerts,Conny Aerts,Cristina Rodríguez-López,Cristina Rodríguez-López,M. Vučković,M. Vučković,T. A. Ottosen,T. Liimets,A. C. Quint,Valérie Van Grootel,Suzanna K. Randall,Ronald L. Gilliland,Hans Kjeldsen,Jørgen Christensen-Dalsgaard,William J. Borucki,David Koch,Elisa V. Quintana +31 more
TL;DR: In this article, the first two quarters of a survey to search for pulsations in compact stellar objects with the Kepler spacecraft is presented, and various methods applied in its compilation are described, and spectroscopic observations are presented to separate the objects into accurate classes.
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HS 0702+6043: a star showing both short-period p-mode and long-period g-mode oscillations
Sonja Schuh,J. Huber,Stefan Dreizler,U. Heber,Simon J. O'Toole,Elizabeth M. Green,Gilles Fontaine +6 more
TL;DR: In this paper, the photometric variability of the hot subdwarf B star HS 0702+6043 was analyzed and interpreted in order to explore its asteroseismological potential.
Journal ArticleDOI
A survey for pulsating subdwarf B stars with the Nordic Optical Telescope
R. H. Østensen,R. Oreiro,J. E. Solheim,Ulrich Heber,Roberto Silvotti,J. M. Gonzalez-Perez,Ana Ulla,F. Pérez Hernández,F. Pérez Hernández,Cristina Rodríguez-López,J. H. Telting +10 more
TL;DR: In this article, a search for pulsating subdwarf B stars was conducted with the Nordic Optical Telescope on La Palma over 59 nights between 1999 and 2009, and twenty new short period pulsators were found.
Journal ArticleDOI
A survey for pulsating subdwarf B stars with the Nordic Optical Telescope
R. H. Østensen,R. Oreiro,J. E. Solheim,Ulrich Heber,Roberto Silvotti,J. M. Gonzalez-Perez,Ana Ulla,F. Perez-Hernandez,Cristina Rodríguez-López,J. H. Telting +9 more
TL;DR: In this article, a search for pulsating subdwarf B stars was conducted with the Nordic Optical Telescope on La Palma over 59 nights between 1999 and 2009, and twenty new pulsators were found, most of which have already been published and some extensively studied.
Journal ArticleDOI
Multicolour photometry of Balloon 090100001: linking the two classes of pulsating hot subdwarfs
Andrzej S. Baran,Andrzej S. Baran,Andrzej Pigulski,Dorota Kozieł,W. Ogloza,Roberto Silvotti,Stanisław Zoła,Stanisław Zoła +7 more
TL;DR: In this paper, the authors present results of multicolour UBVR photometry of the high-amplitude EC-14026-type star Balloon-090100001.
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