Publications of the Astronomical Society of the Pacific, Volume 106, Issues 695-702Astronomical Society of the Pacific, 1994 |
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Page 25
... associations . These associations contain many , but by no means all , of the stars with masses greater than 15M . Most of our knowledge of the stellar content of the OB associations in our own Galaxy is surprisingly sketchy due to ...
... associations . These associations contain many , but by no means all , of the stars with masses greater than 15M . Most of our knowledge of the stellar content of the OB associations in our own Galaxy is surprisingly sketchy due to ...
Page 26
... associations and to suggest that they are young in comparison to other stars in the Galaxy ; this agreed with estimates of stellar age for O and B stars based on their luminosity . The discovery of the rapid expansion of Perseus OB2 by ...
... associations and to suggest that they are young in comparison to other stars in the Galaxy ; this agreed with estimates of stellar age for O and B stars based on their luminosity . The discovery of the rapid expansion of Perseus OB2 by ...
Page 27
... association Scorpio - Centaurus ( Blaauw 1963 ) . The careful work by Walborn ( 1973 ) on the classification of O - type stars set the stage for much subsequent interest in these most massive stars . 120 2. GALACTIC ASSOCIATIONS ...
... association Scorpio - Centaurus ( Blaauw 1963 ) . The careful work by Walborn ( 1973 ) on the classification of O - type stars set the stage for much subsequent interest in these most massive stars . 120 2. GALACTIC ASSOCIATIONS ...
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absorption abundance accretion analysis asteroids astrometry Astronomical Society binary bright calibration catalog central star chromospheric clouds color comets correction derived detection detector diagram disk distribution eclipse emission errors estimate evolution expansion velocities Fe/H field flux frame function galactic galaxies GCLF giant branch globular clusters H II regions Hyades indices infrared ionized km s¹ light curve lines luminosity magnitude main sequence main-sequence mass measured MNRAS objects observations Observatory obtained open clusters optical orbital parameters PASP period phase photometric pixels planetary nebulae plotted quasars radial velocities radius range ratio red giants reddening redshift region residuals rotation sample scale scatter secondary solar sources spectral type spectroscopic spectrum standard stellar subgiant survey Table telescope temperature tion turnoff values variability wavelength white dwarf width X-ray XX Vir