Other
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005mnras.358..665e&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 358, Issue 3, pp. 665-670.
Other
40
Stars: Individual: Hd 116114, Stars: Magnetic Fields, Stars: Oscillations, Stars: Variables: Other
Scientific paper
The discovery of a new rapidly oscillating Ap star, HD 116114, with a pulsation period of 21 min, using high-resolution spectra obtained with the Ultraviolet-Visual Echelle Spectrograph at the European Southern Observatory's Very Large Telescope, is presented. The highest amplitudes of the radial velocity variations are between 50 and 125 m s-1 visible in the EuII lines. The spectral lines of LaII and the core of the Hα line have amplitudes of about 30 m s-1. The frequency obtained for the oscillations is in good agreement with theoretical predictions of longer-period, evolved roAp stars. The distinction in luminosity between the roAp and noAp stars, and the suggestion that in all roAp stars the abundance of the second ions of Pr and Nd, relative to the abundance of the first ions, is anomalously high, need to be revised in the light of this discovery.
Cunha Margarida S.
Elkin V. G.
Kurtz Don W.
Mathys Gautier
Riley John D.
No associations
LandOfFree
The discovery of a luminous, rapidly oscillating Ap star, HD 116114, with a 21-minute pulsation period* 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 The discovery of a luminous, rapidly oscillating Ap star, HD 116114, with a 21-minute pulsation period*, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The discovery of a luminous, rapidly oscillating Ap star, HD 116114, with a 21-minute pulsation period* will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1349487