Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....101.1476s&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 101, April 1991, p. 1476-1482. Research supported by NASA and CNRS.
Astronomy and Astrophysics
Astronomy
11
Binary Stars, Degenerate Matter, Physical Properties, Stellar Spectrophotometry, Main Sequence Stars, Stellar Color, Stellar Evolution, Stellar Magnitude, Stellar Motions, White Dwarf Stars
Scientific paper
Spectral types and spectrophotometry are presented for 21 double degenerate (DD) common proper motion binaries, along with estimates of their colors, absolute visual and bolometric magnitudes, and cooling ages. The oldest pairs in the sample are 9 x 10 to the 9th yr; the differential cooling ages range from 0.01 to 0.84. The median and mean separations of the DD pairs are 426 and 407 Au, respectively, both apparently smaller than the WD+MS values. The average UVW motions and velocity dispersions are significantly larger than the average velocities and dispersions associated with selected samples of single white dwarfs and MS+WD binaries when the latter are restricted to the same color/Mv range as the DD systems. This may be a result of the dynamical inflation of the velocity dispersion of DD systems due to their extremely ancient total stellar ages.
Hintzen Paul
Liebert James
Oswalt Terry D.
Sion Edward M.
No associations
LandOfFree
The physical properties of double degenerate common proper motion binaries 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 physical properties of double degenerate common proper motion binaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The physical properties of double degenerate common proper motion binaries will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1789792