Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mnras.414..792b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 414, Issue 1, pp. 792-800.
Astronomy and Astrophysics
Astronomy
8
Stars: Chemically Peculiar, Stars: Fundamental Parameters, Stars: Oscillations, Stars: Variables: Δ Scuti
Scientific paper
We present an analysis of high-resolution spectra for two pulsating Am stars in the Kepler field. The stellar parameters derived in this way are important because parameters derived from narrow-band photometry may be affected by the strong metal lines in these stars. We analyse the Kepler time series of ten known Am stars and find that six of them clearly show δ Scuti pulsations. The other four appear to be non-pulsating. We derive fundamental parameters for all known pulsating Am stars from ground-based observations and also for the Kepler Am stars to investigate the location of the instability strip for pulsating Am stars. We find that there is not much difference between the Am-star instability strip and the δ Scuti instability strip. We find that the observed location of pulsating Am stars in the HR diagram does not agree with the location predicted from diffusion calculations. Based on observations made with the Italian Telescopio Nazionale Galileo (TNG) operated on the island of La Palma by the Fondación Galileo Galilei of the Istituto Nazionale di Astrofisica (INAF), at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias, and with the Mercator Telescope operated on the island of La Palma by the Flemish Community.
Balona Luis A.
Caldwell Douglas A.
Catanzaro Giovanni
Christensen-Dalsgaard Joergen
de Cat Peter
No associations
LandOfFree
Kepler observations of Am stars 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 Kepler observations of Am stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kepler observations of Am stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-991479