The Orbital Period Distribution of Cataclysmic Variables from the Sloan Digital Sky Survey (SDSS)
نویسنده
چکیده
xiii Chapter
منابع مشابه
VLT/FORS spectroscopy of faint cataclysmic variables discovered by the Sloan Digital Sky Survey
We present medium-resolution VLT/FORS2 spectroscopy of six cataclysmic variables discovered by the Sloan Digital Sky Survey. We determine orbital periods for SDSS J023322.61+005059.5 (96.08 ± 0.09min), SDSS J091127.36+084140.7 (295.74 ± 0.22min), SDSS J103533.02+055158.3 (82.10 ± 0.09min), and SDSS J121607.03+052013.9 (most likely 98.82 ± 0.16min, but the one-day aliases at 92min and 107min are...
متن کاملThe fainter the better: cataclysmic variable stars from the Sloan Digital Sky Survey
The Sloan Digital Sky Survey has identified a total of 212 cataclysmic variables, most of which are fainter than 18th magnitude. This is the deepest and most populous homogeneous sample of cataclysmic variables to date, and we are undertaking a project to characterise this population. We have found that the SDSS sample is dominated by a great “silent majority” of old and faint CVs. We detect, f...
متن کاملThe Hidden Population of AM CVn Binaries in the Sloan Digital Sky Survey
We present results from a spectroscopic survey designed to uncover AM Canum Venaticorum (AM CVn) binaries hidden in the photometric database of the Sloan Digital Sky Survey (SDSS). The discovery of only 7 new AM CVns in the observed part of our sample suggests a lower space density than previously predicted. Based on the complete g ≤ 19 sample, we calculate an observed space density for AM CVns...
متن کاملOrbital periods of cataclysmic variables identified by the SDSS . V . VLT , NTT and Magellan observations of nine equatorial systems
We present VLT and Magellan spectroscopy and NTT photometry of nine faint cataclysmic variables (CVs) which were spectroscopically identified by the Sloan Digital Sky Survey. We measure orbital periods for five of these from the velocity variations of the cores and wings of their Hα emission lines. Four of the five have orbital periods shorter than the 2–3hour period gap observed in the known p...
متن کاملOrbital periods of cataclysmic variables identified by the SDSS . II . Measurements for six objects , including two eclipsing systems
Continuing our work from Paper I (Southworth et al., 2006) we present mediumresolution spectroscopy and broad-band photometry of seven cataclysmic variables (CVs) discovered by the Sloan Digital Sky Survey. For six of these objects we derive accurate orbital periods, all which are measured for the first time. For SDSS J013132.39−090122.2, which contains a non-radially pulsating white dwarf, we ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2009