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Dynamical mass determinations for the white dwarf components of HZ 9 and Case 1Radial-velocity curves for both components of the short-period, white dwarf M dwarf binary systems Case 1 and HZ 9 have been determined from 1-A-resolution spectra obtained at the MMT. The radial-velocity curves for the M dwarf components agree well with previous determinations. The new data have been used to estimate masses for the white dwarfs, yielding 0.38 solar mass for the Case 1 DA and 0.51 solar mass for the HZ 9 DA, with 1sigma uncertainties of about 0.1 solar mass.
Document ID
19880026296
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Stauffer, John R.
(NASA Ames Research Center Moffett Field; California, University, Santa Cruz, United States)
Date Acquired
August 13, 2013
Publication Date
October 1, 1987
Publication Information
Publication: Astronomical Journal
Volume: 94
ISSN: 0004-6256
Subject Category
Astrophysics
Accession Number
88A13523
Distribution Limits
Public
Copyright
Other

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