Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.276.1295e&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 276, NO. 4/OCT15, P.1295, 1995
Astronomy and Astrophysics
Astronomy
15
Techniques: Radial Velocities - Stars: Individual: Α1 Cen - Stars: Individual: Β Myi - Stars: Oscillations
Scientific paper
Time-series observations of the radial velocities of β Hyi (HR 98, G2 IV) and α1 Cen (HR 5459, G2 V) have been examined for the periodicities expected from global p-mode oscillations. For α1 Cen, the upper limit on the amplitude of any coherent oscillation in the 2 - 4 mHz band is 0.5 - 0.6 m s-1. There is evidence of periodicity in the power spectrum, with splitting δv0/2 ≍ 53 - 55 μHz. For β Hyi, an upper limit of 1.5 - 2.0 m s-1 can be placed on the amplitude of any oscillation in the expected period range. While we do not claim to have detected unambiguous evidence of p-mode oscillations on α1 Cen or β Hyi, we have placed significant upper limits on such oscillations as might exist. We have also demonstrated the feasibility of using coud6 spectroscopy to detect oscillations with amplitudes comparable to those on the Sun.
Cram Lawrence E.
Edmonds Peter D.
No associations
LandOfFree
A Search for Global Acoustic Oscillations on ALPHA-1-CENTAURI and Beta-Hydri 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 A Search for Global Acoustic Oscillations on ALPHA-1-CENTAURI and Beta-Hydri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Search for Global Acoustic Oscillations on ALPHA-1-CENTAURI and Beta-Hydri will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1355599