Discovery of 30-min oscillations in the AP Sr(EuCr) star HD 75425

Details Discovery of 30-min oscillations in the AP Sr(EuCr) star HD 75425 Discovery of 30-min oscillations in the AP Sr(EuCr) star HD 75425

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ap%26ss.259...57m&link_type=abstract

Astrophysics and Space Science, v. 259, Issue 1, p. 57-65 (1998).

Astronomy and Astrophysics

Astrophysics

3

Scientific paper

The Ap Sr(CrEu) star HD 75425 is shown to be pulsating with a 30- min period. This is unusually short for a δ Scuti star and about double the period of any known roAp star. The star is shown to be constant at the level of 0.35 mmag in the normal frequency regime of roAp pulsation (900≤ν≤ 2500 μHz). The pulsations in HD 75425 are modulated in amplitude, but the frequencies causing this modulation cannot be identified with the data in hand. HD 75425 is a very close visual double with an insecure Ap classification which needs to be reexamined. If the Ap classification of HD 75425 is correct, and the pulsations can be linked to the peculiar star, then this δ Scuti-like variability is of considerable interest.

Affiliated with

Also associated with

No associations

Rating

Discovery of 30-min oscillations in the AP Sr(EuCr) star HD 75425 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 of 30-min oscillations in the AP Sr(EuCr) star HD 75425, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of 30-min oscillations in the AP Sr(EuCr) star HD 75425 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1330952