@article{54dfe6e55cf1456fbfc8bd00a62bf571,
title = "The physical properties of double degenerate common proper motion binaries",
author = "Si{\'o}n, \{Edward M.\} and Oswalt, \{T. D.\} and Liebert, \{James W.\} and Hintzen, \{Paul M N\}",
note = "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.",
year = "1991",
month = apr,
day = "1",
doi = "10.1086/115779",
language = "American English",
volume = "101",
journal = "The Astronomical Journal",
issn = "1538-3881",
publisher = "Institute of Physics Publishing, Inc.",
}