Pulsational Characteristics of Delta Scuti Variable HR 1170

Details Pulsational Characteristics of Delta Scuti Variable HR 1170 Pulsational Characteristics of Delta Scuti Variable HR 1170

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jkas...23....1k&link_type=abstract

Journal of the Korean Astronomical Society, vol. 23, no. 1, p. 1-13

Astronomy and Astrophysics

Astronomy

2

Scientific paper

New uvby photoelectric photometry was carried out for a Delta Scuti variable, HR 1170. By applying the Fourier method and the linear least square method, three frequencies were derived: f1 = 10.06134c/d (P1 = 0.0994 day), f2 = 11.91754c/d(P2 = 0.0839 day), f3 = 18.96776c/d(P3 = 0.0527day). From the observed pulsational constants and from the phase difference and amplitude ratios for color (b-y) and magnitude y, three different pulsational modes (n, l) of f1(0,0), f2(1,2), f3(3,2) are deduced, indicating the existence of nonradial mode in HR 1170. Some physical parameters indicate that HR 1170 is evolving at the stage of H shell burning.

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