Discovery of Two New Accreting ZZ Ceti Stars

Details Discovery of Two New Accreting ZZ Ceti Stars Discovery of Two New Accreting ZZ Ceti Stars

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..372..603m&link_type=abstract

15th European Workshop on White Dwarfs ASP Conference Series, Vol. 372, proceedings of the conference held 7-11 August, 2006 in

Astronomy and Astrophysics

Astronomy

3

Scientific paper

We report two new accreting ZZ Ceti stars amongst the cataclysmic variables of the Sloan Digital Sky Survey: SDSS J074531.92+453829.5 and SDSS J091945.11+085710.0. We observe high amplitude non-sinusoidal variations of 4.5--7% at a period close to 1230 s in the optical light curves of SDSS J074531.92+453829.5 and a low amplitude variation of 0.7--1% near 260 s in the light curves of SDSS J091945.11+085710.0. We infer that these optical variations are a consequence of non-radial g-mode pulsations in the accreting primary white dwarfs of these cataclysmic variables. This discovery paper brings the total number of known accreting white dwarf pulsators to ten. We determine an orbital period of 86.3 ± 2.0 min for SDSS J074531.92+453829.5 and 93.5 ± 8.5 min for SDSS J091945.11+085710.0.

Affiliated with

Also associated with

No associations

Rating

Discovery of Two New Accreting ZZ Ceti Stars 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 Two New Accreting ZZ Ceti Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of Two New Accreting ZZ Ceti Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-962623