Discovery of two new faint cataclysmic variables

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Discovery of Two New Faint Cataclysmic Variables ⋆

We report on the discovery of two new faint cataclysmic variables. The objects were selected as candidates from two different imaging surveys aimed at the discovery of such faint systems. One survey used color and variability while the other used color and Hα emission as selection criteria. We present our spectra of the two new variables and discuss their properties. A discussion of the implica...

متن کامل

Spectroscopic Observations of Twenty - one Faint Cataclysmic Variables Candidates ⋆

We provide the first minimum light spectroscopic observations for 21 previously known or suspected faint cataclysmic variable candidates. The sources were selected from the Downes et al. (2001) living edition catalog and the identified candidates have minimum light magnitudes of V∼18-22. We confirm 15 of the candidates to be cataclysmic variables.

متن کامل

High speed photometry of faint Cataclysmic Variables : III . V 842

We present further results from a high speed photometric survey of faint cataclysmic variables. We find that V842 Cen (Nova Cen 1986 No. 2) is highly active, but with no evident orbital modulation. BY Cir (Nova Cir 1995) is an eclipsing system with an orbital period (Porb) of 6.76 h. TV Crv, an SU UMa type dwarf nova, is found to have Porb = 1.509 h from photometry at quiescence. DD Cir (Nova C...

متن کامل

Faint Cataclysmic Variables in Quiescence: Globular Cluster and Field Surveys

Current evolutionary models imply that most Cataclysmic Variables (CVs) have Porb < 2 hours and are Dwarf Nova (DN) systems that are quiescent most of the time. Observations of nearby quiescent DN find that the UV spectrum is dominated by the hot white dwarf (WD), indicating that it provides a significant fraction of the optical light in addition to the quiescent disk and main sequence companio...

متن کامل

Discovery of Fourier-dependent time lags in cataclysmic variables

We report the first study of Fourier-frequency-dependent coherence and phase/time lags at optical wavelengths of cataclysmic variables (MV Lyr and LU Cam) displaying typical flickering variability in white light. Observations were performed on the William Herschel Telescope using ULTRACAM. Light curves for both systems have been obtained with the SDSS filters u′, g′ and r′ simultaneously with c...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Astronomy & Astrophysics

سال: 2002

ISSN: 0004-6361,1432-0746

DOI: 10.1051/0004-6361:20021532