The Accretion Disk and White Dwarf in the U Geminorum type Dwarf Novae UZ Serpentis and SS Aurigae during Quiescence

Details The Accretion Disk and White Dwarf in the U Geminorum type Dwarf Novae UZ Serpentis and SS Aurigae during Quiescence The Accretion Disk and White Dwarf in the U Geminorum type Dwarf Novae UZ Serpentis and SS Aurigae during Quiescence

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aj....122.1632l&link_type=abstract

The Astronomical Journal, Volume 122, Issue 3, pp. 1632-1635.

Astronomy and Astrophysics

Astronomy

9

Stars: Novae, Cataclysmic Variables, Stars: Individual (Ss Aurigae, Uz Serpentis)

Scientific paper

We have carried out high-gravity model atmosphere and accretion disk synthetic spectral fits for the U Geminorum type dwarf novae during quiescence. For UZ Ser, we find that the far-UV spectrum is best fitted with a logg=8, Teff=27,000 K photosphere with abundances near solar. The best-fit accretion disk model for UZ Ser has Mwd=1.0 Msolar, disk inclination i=75°, and M=10-9 Msolar yr-1. For SS Aur, the best-fit model photosphere has Teff=30,000K, logg=8, and solar composition abundances, while the best-fit accretion disk model has Mwd=1.0 Msolar, i=41°, and M=10-10 Msolar yr-1. These accretion rates are discussed in connection with the critical accretion rates predicted by the disk instability theory. Whether a white dwarf or a disk accounts for the far-UV spectra, they must be quite hot. If indeed the white dwarf dominates the far-UV light, then UZ Ser and SS Aur add two important temperatures in support of the conclusion that the accreting white dwarfs above the period gap are a factor of 1.5-2 times hotter than the accreting cataclysmic variable degenerates in systems below the period gap.

Affiliated with

Also associated with

No associations

Rating

The Accretion Disk and White Dwarf in the U Geminorum type Dwarf Novae UZ Serpentis and SS Aurigae during Quiescence 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 Accretion Disk and White Dwarf in the U Geminorum type Dwarf Novae UZ Serpentis and SS Aurigae during Quiescence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Accretion Disk and White Dwarf in the U Geminorum type Dwarf Novae UZ Serpentis and SS Aurigae during Quiescence will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1484021