Discovery and analysis of Gamma Doradus type pulsations in the F0 IV star HR 2740=QW PUP

Details Discovery and analysis of Gamma Doradus type pulsations in the F0 IV star HR 2740=QW PUP Discovery and analysis of Gamma Doradus type pulsations in the F0 IV star HR 2740=QW PUP

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mnras.292..621p&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 292, p. 621

Physics

16

Variable Stars, Stellar Oscillations, F Stars, Stellar Rotation, O Stars, Light Curve, Astronomical Photometry, Power Spectra, Stellar Physics

Scientific paper

We present multisite photometric observations of the F0 IV star HR 2740=QW Pup that reveal it to be a Gamma Dor type variable pulsating with four frequencies: 1.0434, 0.9951, 1.1088 and 0.9019/d. These data were obtained over a time baseline spanning from January 14 to February 11, 1997. The 1.0434/d term dominates in amplitude (10 mmag) over the other three (each less than 5 mmag); the light curve comprising these four frequencies seems to be very stable and no residual power is left in the power spectrum. During the analysis particular attention was paid to methodological aspects, which cannot be neglected considering the proximity of the frequencies to 1/d. Physical parameters were also derived for all the well-known Gamma Dor stars, confirming that this class is very homogenous. In the framework of the campaign, two Ap stars were also observed. The photometric differences between these rotating variables and HR 2740 are emphasized, corroborating the pulsational nature of the Gamma Dor stars. It is further demonstrated that the rotational splitting cannot be a suitable explanation of the observed frequency content of HR 2740.

Affiliated with

Also associated with

No associations

Rating

Discovery and analysis of Gamma Doradus type pulsations in the F0 IV star HR 2740=QW PUP does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Discovery and analysis of Gamma Doradus type pulsations in the F0 IV star HR 2740=QW PUP, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery and analysis of Gamma Doradus type pulsations in the F0 IV star HR 2740=QW PUP will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1662403