HD 178892 - a cool Ap star with extremely strong magnetic field

Details HD 178892 - a cool Ap star with extremely strong magnetic field HD 178892 - a cool Ap star with extremely strong magnetic field

2005-12-13

arxiv.org/abs/astro-ph/0512319v1

Astronomy and Astrophysics

Astrophysics

Accepted by Astronomy & Astrophysics; 4 pages, 4 figures

Scientific paper

10.1051/0004-6361:200500222

We report a discovery of the Zeeman resolved spectral lines, corresponding to the extremely large magnetic field modulus =17.5 kG, in the cool Ap star HD 178892. The mean longitudinal field of this star reaches 7.5 kG, and its rotational modulation implies the strength of the dipolar magnetic component Bp>=23 kG. We have revised rotation period of the star using the All Sky Automated Survey photometry and determined P=8.2478 d. Rotation phases of the magnetic and photometric maxima of the star coincide with each other. We obtained Geneva photometric observation of HD 178892 and estimated Teff=7700+/-250 K using photometry and the hydrogen Balmer lines. Preliminary abundance analysis reveals abundance pattern typical of rapidly oscillating Ap stars.

Affiliated with

Also associated with

No associations

Rating

HD 178892 - a cool Ap star with extremely strong magnetic field 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 HD 178892 - a cool Ap star with extremely strong magnetic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HD 178892 - a cool Ap star with extremely strong magnetic field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-35783