Secular Variation of the Mode Amplitude-Ratio of the Double-Mode RR Lyrae Star NSVS 5222076, Part 2

Details Secular Variation of the Mode Amplitude-Ratio of the Double-Mode RR Lyrae Star NSVS 5222076, Part 2 Secular Variation of the Mode Amplitude-Ratio of the Double-Mode RR Lyrae Star NSVS 5222076, Part 2

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...218.9602h&link_type=abstract

American Astronomical Society, AAS Meeting #218, #96.02; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

In 2008, a campaign of time-series observations (Hurdis 2009) was conducted in the V and I bands for NSVS 5222076, a double-mode RR Lyrae (RRd) field star in Bootes. Comparison of those results with the earlier observations of Oaster, Smith, and Kinemuchi (2006) suggested that a rapid and significant decrease might be occurring in the amplitude ratio, A0/A1, of the star's fundamental and first-overtone pulsation modes. To follow up on this interesting result, additional campaigns of time-series observations were conducted in 2009, 2010 and 2011. This paper will describe how the amplitude ratio of the star has continued to change.

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