Abstract
view Abstract Citations (12) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A spectroscopic orbit for the subdwarf binary Mu Cassiopeiae. Worek, T. F. ; Beardsley, W. R. Abstract A spectroscopic orbit for the OS subdwaff Cas is presented. Eighty-one radial velocities from the Allegheny, Kitt Peak, David Dunlap, McDonald, and Hale Observatories, along with 19 previously published ones, are used to establish the orbit. We find that the observations best fit a computed velocity curve represented by these final elements: P = 23.0 yr, e = 0.30, T = 1954.0, K= 2.8kms-1,andw = 1780. If the primary mass is approximated to be 0.80 M0, it then follows that MB > 0.27 M0. Thus the secondary is likely to have a spectral type no later than M3 and these magnitudes: Mbol < +9.6 and Mv < +11.9. Since present-day observations correspond to the minimum in the velocity curve, efforts should still be made to secure more spectra. Subject headings: stars: binaries - stars: individual - stars: subdwarfs - stars: visual multiples Publication: The Astrophysical Journal Pub Date: October 1977 DOI: 10.1086/155562 Bibcode: 1977ApJ...217..134W Keywords: Binary Stars; Orbital Elements; Stellar Spectra; Subdwarf Stars; Radial Velocity; Stellar Luminosity; Stellar Mass; Stellar Motions; Astronomy full text sources ADS | data products SIMBAD (1)
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