Radial-velocity variations of the Delta Scuti star 20 Canum Venaticorum

1986 ◽  
Vol 98 ◽  
pp. 862 ◽  
Author(s):  
S. Yang ◽  
G. A. H. Walker
Keyword(s):  
Radial Velocity ◽  
Scuti Star ◽  
Delta Scuti Star ◽  
Velocity Variations ◽  
Delta Scuti

The unusual Delta Scuti star θ2 Tau

2008 ◽  
pp. 122-125
Author(s):  
Michel Breger ◽  
E. Antonello ◽  
L. Mantegazza ◽  
Huang Lin ◽  
Jiang Shi-yang ◽  
...  
Keyword(s):  
Scuti Star ◽  
Delta Scuti Star ◽  
Delta Scuti

scholarly journals The Delta Scuti Star GX Pegasi: A Theoretical Investigation of its Power Spectrum

1993 ◽  
Vol 134 ◽  
pp. 181-183
Author(s):  
E. Michel ◽  
M. J. Goupil ◽  
Y. Lebreton ◽  
A. Baglin
Keyword(s):  
Power Spectrum ◽  
Theoretical Investigation ◽  
Main Sequence ◽  
Main Sequence Star ◽  
Mode Identification ◽  
Star Models ◽  
Convective Core ◽  
Scuti Star ◽  
Delta Scuti Star ◽  
Delta Scuti

Target of a STEPHI multisite campaign, the Delta Scuti star GX Pegasi has been found to oscillate with at least five simultaneous, close frequencies (table I).Mode identification together with informations about the star that such an identification can provide are outlined below (see also Michel et al, 1992b).The mode identification is carried out by means of a comparison between the observed frequencies and the adiabatic frequencies of models appropriate to this star. Models that match GX Peg’s position in a Hertzsprung-Russell diagram have masses in the range 1.9 – M⊙. When included, convective core overshoot is handled as in Maeder and Meynet (1989). According to these models, GX Peg is a rather evolved, main sequence star.

Radial velocity variations of the Delta Scuti variable Beta Cassiopeiae

1982 ◽  
Vol 94 ◽  
pp. 317 ◽  
Author(s):  
S. Yang ◽  
G. A. H. Walker ◽  
G. G. Fahlman ◽  
B. Campbell
Keyword(s):  
Radial Velocity ◽  
Velocity Variations ◽  
Delta Scuti

Non Radial Period Structure of the Delta-Scuti Star HR1170

1980 ◽  
Vol 92 ◽  
pp. 696 ◽  
Author(s):  
J. Warman ◽  
J. H. Pena ◽  
T. E. Margrave
Keyword(s):  
Scuti Star ◽  
Delta Scuti Star ◽  
Delta Scuti

The spectral variations of the Delta Scuti star Rho Puppis

1987 ◽  
Vol 99 ◽  
pp. 425 ◽  
Author(s):  
S. Yang ◽  
G. A. H. Walker ◽  
P. Bennett
Keyword(s):  
Scuti Star ◽  
Delta Scuti Star ◽  
Delta Scuti

scholarly journals Is Delta Scuti Star Seismology Possible?

1989 ◽  
Vol 111 ◽  
pp. 271-271
Author(s):  
G. Kovacs
Keyword(s):  
Sampling Rate ◽  
Efficient Tool ◽  
Scuti Star ◽  
Delta Scuti Star ◽  
Delta Scuti ◽  
Stellar Seismology ◽  
Ap Stars ◽  
Scuti Stars ◽  
Δ Scuti Stars ◽  
Nonradial Pulsation

AbstractThe direct fit of theoretical pulsation frequencies to the observations (i.e. stellar seismology) proved to be a very efficient tool in the study of solar oscillations. In the case of other multiperiodic variables, like δ Scuti stars, Ap stars and white dwarfs the method suffers from the disturbing abundance of possible nonradial modes. Colour and/or radial velocity (or line profile) measurements can narrow down the number of possibilities, but these kinds of data are not often available with the desired accuracy and sampling rate. Since pulsational frequencies are the most readily and accurately computed and measured quantities of pulsation, we address the question of the accurate fit of the nonradial pulsation frequencies to the observations in the case of δ Scuti stars.

HR 7920: a very bright new Delta Scuti star with possible Gamma Doradus variations

2016 ◽  
Vol 466 (1) ◽  
pp. 122-128 ◽  
Author(s):  
C. Koen ◽  
F. van Wyk ◽  
C. D. Laney ◽  
D. Kilkenny
Keyword(s):  
Scuti Star ◽  
Delta Scuti Star ◽  
Delta Scuti

The Delta Scuti star GX Pegasi: A theoretical investigation of its power spectrum

1993 ◽  
Vol 210 (1-2) ◽  
pp. 181-183 ◽  
Author(s):  
E. Michel ◽  
M. J. Goupil ◽  
Y. Lebreton ◽  
A. Baglin
Keyword(s):  
Power Spectrum ◽  
Theoretical Investigation ◽  
Scuti Star ◽  
Delta Scuti Star ◽  
Delta Scuti
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