Neutral Oxygen Observations in Stars

Details Neutral Oxygen Observations in Stars Neutral Oxygen Observations in Stars

Dec 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971bott....6..137m&link_type=abstract

Boletín de los Observatorios de Tonantzintla y Tacubaya Vol. 6, pp. 137-141 (1971) (http://www.astroscu.unam.mx/~bott/)

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2

Photometry, Techniques: Photometric

Scientific paper

At the Observatorio Astronomico Nacional of the Instituto de Astronomia de la Universidad Nacional Autonoma de Mexico in San Pedro Martir, B. C., we have performed photoelectric photometry for 31 stars in a narrow-band system. The system allows the measurements of total absorptions of neutral oxygen at λ7774 Å through three interference filters (20-25 Å half-width). The preliminary results are very encouraging: supergiant stars can be clearly separated from other luminosity classes, the total absorptions depend strongly on the stellar luminosity and, to a lesser degree on the effective temperature (spectral type) of the star.

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