The discovery of an extremely low amplitude Cepheid?

Details The discovery of an extremely low amplitude Cepheid? The discovery of an extremely low amplitude Cepheid?

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...394l..25b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 394, no. 1, July 20, 1992, p. L25-L27. Research supported by NASA

Astronomy and Astrophysics

Astrophysics

14

Cepheid Variables, Supergiant Stars, Radial Velocity, Stellar Luminosity, Stellar Spectrophotometry

Scientific paper

Extremely low amplitude periodic radial velocity variations are found for HR 7796 (F8 Ib), thought to be a non-Cepheid in (or near) the instability strip. Two and one-half complete cycles have been monitored over three observing runs. The period is found to be 11.874 +/- 0.02 days. Observations of the reference star HR 509 (G8 V) taken on the same nights show no periodicities and a scatter of just 20 m/s. A first-order approximation shows that HR 7796 does appear to follow the Cepheid period-luminosity relation. If HR 7796 is a Cepheid, it is the smallest amplitude Cepheid by more than an order of magnitude.

Affiliated with

Also associated with

No associations

Rating

The discovery of an extremely low amplitude Cepheid? 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 an extremely low amplitude Cepheid?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The discovery of an extremely low amplitude Cepheid? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1204958