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Program Number
Program Name Radial Velocity Observations of 4U 1907+09                      
Jeffrey McClintock  [email]  [web]  
Co-Investigator(s) Michael Garcia


We propose to obtain improved radial velocity data for the high-mass X-ray binary 4U 1907+09. The secondary is a heavily reddened V = 16.4 O or B star with an orbital period of 8.38 days. The spectrum contains photospheric lines of He I, H_alpha in emission, and numerous interstellar lines in absorption (van Kerkwijk et al. 1989, A&A, 209, 173).
Spectra [search in archive]
Trimester(s) data taken 1998c-1999a
Papers none

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