Rotational Velocity Determinations for 118 δ Scuti Variables

Details Rotational Velocity Determinations for 118 δ Scuti Variables Rotational Velocity Determinations for 118 δ Scuti Variables

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21343303b&link_type=abstract

American Astronomical Society, AAS Meeting #213, #433.03; Bulletin of the American Astronomical Society, Vol. 41, p.301

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present a calibration method used for the determination of projected rotational velocities (vsin i) of 118 δ Scuti variables from FWHM measurements of metal lines near 4500 Å. The calibration relation used was derived from measurements of 29 stars. Of the 44 stars brighter than 8th magnitude and north of -1° declination which did not have values in the Rodríguez catalog (Rodríguez, E., López González, M. J., & López de Coca, P. 2000, A&AS, 144, 469), we present values for 38. In addition, we present new vsin i values for 10 stars south of -1° or fainter than 8th magnitude for a total of 48 vsin i values for stars with no previously published values. We acknowledge the Dominion Astrophysical Observatory for making available the 1.2-m and 1.8-m telescopes to aid in this research.

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