Hot subdwarfs in the galactic bulge

G. Busso; S. Moehler; M. Zoccali; U. Heber; S. K. Yi

doi:10.1086/498212

Hot subdwarfs in the galactic bulge

G. Busso, S. Moehler, M. Zoccali, U. Heber, S. K. Yi

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17 Citations (Scopus)

Abstract

Recent observations and theories suggest that extreme horizontal-branch (EHB) stars and their progeny should be the cause of the UV excess seen in the spectra of many elliptical galaxies. Since the Galactic bulge is the closest representation of an old, metal-rich spheroid in which we are able to study the EHB scenario in detail, we obtained spectra of bulge EHB-star candidates, and we confirm their status as hot evolved stars. This is the first time that such stars have been unambiguously identified in the Galactic bulge.

Original language	English
Pages (from-to)	L29-L32
Journal	Astrophysical Journal
Volume	633
Issue number	1 II
DOIs	https://doi.org/10.1086/498212
Publication status	Published - 2005 Nov 1

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/498212

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AU - Busso, G.

AU - Moehler, S.

AU - Zoccali, M.

AU - Heber, U.

AU - Yi, S. K.

PY - 2005/11/1

Y1 - 2005/11/1

N2 - Recent observations and theories suggest that extreme horizontal-branch (EHB) stars and their progeny should be the cause of the UV excess seen in the spectra of many elliptical galaxies. Since the Galactic bulge is the closest representation of an old, metal-rich spheroid in which we are able to study the EHB scenario in detail, we obtained spectra of bulge EHB-star candidates, and we confirm their status as hot evolved stars. This is the first time that such stars have been unambiguously identified in the Galactic bulge.

AB - Recent observations and theories suggest that extreme horizontal-branch (EHB) stars and their progeny should be the cause of the UV excess seen in the spectra of many elliptical galaxies. Since the Galactic bulge is the closest representation of an old, metal-rich spheroid in which we are able to study the EHB scenario in detail, we obtained spectra of bulge EHB-star candidates, and we confirm their status as hot evolved stars. This is the first time that such stars have been unambiguously identified in the Galactic bulge.

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JF - Astrophysical Journal

IS - 1 II

ER -

Hot subdwarfs in the galactic bulge

Abstract

All Science Journal Classification (ASJC) codes

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