The age, life expectancy, and space density of Post Common Envelope Binaries

By M. Schreiber, B. Gänsicke. 2003

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We present a sample of 30 well observed Post Common Envelope Binaries (PCEBs). Deriving the cooling age of the white dwarfs, we show that the PCEB population is dominated by young systems. Having calculated the orbital evolution of the systems under the assumption of two different prescriptions for the angular momentum loss, we find that most of the systems have not yet completed a significant fraction of their PCEB life time. We therefore predict the existence of a large population of old PCEBs containing cold white dwarfs (Teff 4 h) CV, and a significant fraction of the systems will start mass transfer in the period gap. Having estimated the distances of the PCEBs in the sample, we derive a space density of ρPCEB ∼ 6−30 × 10 −6 pc −3 , depending on the assumed angular momentum loss prescription. Taking into account the evolutionary time scales we compute a lower limit for the CV space density, predicted by the currently known PCEB population of ρCV > 10 −5 pc −3 . Finally, we discuss possible observational

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/f0ebdf35d5aa1f72f2bdffc94e937f441eb64efe

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Citations in the corpus

Post common envelope binaries from SDSS - XI. The white dwarf mass distributions of CVs and pre-CVs (2011, methodology): “…(18) van den Besselaar et al. (2007), (19) Maxted et al. (2004), (20) Stauffer (1987), (21) Lanning & Pesch (1981), (22) Guinan & Sion (1984), (23) Schreiber & Gänsicke (2003), (24) Hillwig et al. (2000), (25) Kepler & Nelan (1993) (26) Bleach et al. (2000), (27) Vennes et al. (1999), (28)…”
The chemical diversity of exo-terrestrial planetary debris around white dwarfs (2012, methodology): “These systems were selected from Schreiber & Gänsicke (2003) and Farihi et al. (2010b) with the same cut on white dwarf temperature and cooling age.”
Detached white dwarf main-sequence star binaries (2004, methodology): “However, since the space densities derived by Schreiber & Gänsicke (2003) are likely to be lower limits, the space density of 4 × 10−4 pc−3 is not necessarily in disagreement with observations.”
Post-common-envelope binaries from SDSS. IX: Constraining the common-envelope efficiency (2010, methodology): “Based on Table A1 in NT05, Table 1 in Schreiber & Gänsicke (2003) and with some additional recent identifications from Burleigh et al. (2006); Tappert et al. (2007); Drake et al. (2009); Tappert et al. (2009) we compiled a list of PCEBs that were not identified with our SDSS PCEB survey.”
On the α formalism for the common envelope interaction (2010, methodology): “C© 2011 The Authors, MNRAS 411, 2277–2292 Monthly Notices of the Royal Astronomical Society C© 2011 RAS Downloaded from https://academic.oup.com/mnras/article-abstract/411/4/2277/982056 by guest on 29 July 2018 Both our and their data derive from those of Schreiber & Gänsicke (2003).”
SIMULATING THE COMMON ENVELOPE PHASE OF A RED GIANT USING SMOOTHED-PARTICLE HYDRODYNAMICS AND UNIFORM-GRID CODES (2011, background): “For all these systems, there has been no substantial orbital shrinkage due to phenomena such as magnetic braking or radiation of gravitational waves (see discussion in Schreiber & Gänsicke 2003).”
Binary planetary nebulae nuclei towards the Galactic bulge - I. Sample discovery, period distribution, and binary fraction (2009, methodology): “…spite of the small samples and differences in selection effects associated with the discovery method of post-CE WDMS (spectroscopic and photometric, Schreiber & Gänsicke 2003) and CSPN (photometric) binaries, the distributions bear a very strong resemblance to each other which strongly suggests…”
SEGUE: A SPECTROSCOPIC SURVEY OF 240,000 STARS WITH g = 14–20 (2009, methodology): “The selection criteria used here have been designed to identify a large sample of old WD/MS binaries containing cold WDs that, according to Schreiber & Gänsicke (2003), should represent the dominant population of WD/MS binaries.”
The frequency of planetary debris around young white dwarfs (2014, background): “…the comparison with the main DA sample, and to test our computational tools: several white dwarfs with close Mdwarf companions (drawn from Schreiber & Gänsicke 2003 and Farihi et al. 2010b), two recently discovered metal-polluted DA white dwarfs from Vennes et al. (2010, 2011b), and a…”
Reconstructing the evolution of white dwarf binaries: further evidence for an alternative algorithm for the outcome of the common-envelope phase in close binaries (2004, background): “In a recent study Schreiber & Gänsicke (2003) carefully investigated this effect in 30 post-common-envelope binaries and found that virtuallyal observed periods are close to the initial periods after the comm n envelope.”