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J/A+A/448/697 Radial velocity of gamma Pegasi (Chapellier+, 2006)
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obsgpeg.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/A+A/448/697
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Beginning of ReadMe :J/A+A/448/697 Radial velocity of gamma Pegasi (Chapellier+, 2006)
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An hybrid beta Cephei-SPB star in a binary system: gamma Pegasi.
Chapellier E., Le Contel D., Le Contel J.-M., Mathias P., Valtier J.-C.
<Astron. Astrophys. 448, 697 (2006)>
=2006A&A...448..697C
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ADC_Keywords: Stars, variable ; Radial velocities
Keywords: stars: binaries: spectroscopic - stars: oscillations -
stars: variables: beta Cephei - stars: variables: general
Abstract:
High resolution and high signal to noise ratio spectroscopic
observations of the classical beta Cephei star gamma Peg were
obtained between 1991 and 2005. The analysis of these data combined
with previously published results shows that gamma Peg is a
spectroscopic binary with an orbital period of 370.5d. We discovered
three new frequencies in addition to the well-known 6.5897d^-1^
(0.15175d) one. That at 6.01d^-1^ is a typical Cephei frequency. The
two others at 0.68 and 0.87d^-1^ are similar to the high degree g-mode
frequencies found in SPB stars. Thus, gamma Peg is a hybrid beta
Cephei-SPB star. Its position in the HR diagram is compatible with
such a status. In addition, a small increase of the main period has
been detected between the 1995 and 2005 observations.
Objects:
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RA (2000) DE Designation(s)
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00 13 14.2 +15 11 01 gamma Peg = HR 39
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