Monitoring Three Less-Studied δ Scuti Variables: GW Ursae Majoris, BO Lyncis, and AN Lyncis

Details Monitoring Three Less-Studied δ Scuti Variables: GW Ursae Majoris, BO Lyncis, and AN Lyncis Monitoring Three Less-Studied δ Scuti Variables: GW Ursae Majoris, BO Lyncis, and AN Lyncis

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aj....130.2876h&link_type=abstract

The Astronomical Journal, Volume 130, Issue 6, pp. 2876-2883.

Astronomy and Astrophysics

Astronomy

3

Stars: Variables: Δ Scuti, Stars: Individual (Gw Ursae Majoris), Stars: Individual (Bo Lyncis), Stars: Individual (An Lyncis)

Scientific paper

We present results from monitoring three δ Scuti variables. GW UMa is found to be a stable, monoperiodic, high-amplitude δ Scuti variable with a revised period of 0.20319389 days. We also report a full radial velocity curve, a near-solar metal content, and a rotational velocity of 15+/-5 km s-1. From a very short time line we find that BO Lyn has a constant period change of -1.5×10-10 days day-1. We also find two potential secondary frequencies of f2=15.81 and f3=13.60 cycles day-1. Finally, we report some unusual results for AN Lyn. We show that the period and amplitude are changing in phase and that this change is related to a binary companion.

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