Delta Scuti stars: Observational aspects

Details Delta Scuti stars: Observational aspects Delta Scuti stars: Observational aspects

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007coast.150...25b&link_type=abstract

Communications in Astroseismology, Vol. 150, p.25

Astronomy and Astrophysics

Astrophysics

3

Scientific paper

The review concentrates on several important aspects of observational studies of δ Scuti stars. After a discussion of promising astrophysical questions we examine
- the extreme amplitude variability of the evolved star 4 CVn
- the role of rotation in determining the amplitudes of radial and nonradial modes
- the lack of constancy at the millimag level of the comparison stars: we propose that up to four photometric comparison stars are used
- the very high accuracy to which frequency values can be determined
- the problem with the sufficient frequency resolution required for the detection of close frequencies.

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