TY - CPAPER AU - Catharine Garmany N1 - JILA Pub. 4175 PB - Astronomical Society of the Pacific PY - 1990 SN - 0-937707-24-4 eISBN: 978-1-58381-343-0 TI - Is there an absolute magnitude calibration for O-type stars? UR - http://articles.adsabs.harvard.edu/full/1990ASPC....7...16G ER -