Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pasp...94...31c&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 94, Feb. 1982, p. 31-35.
Astronomy and Astrophysics
Astronomy
35
B Stars, Early Stars, Magellanic Clouds, O Stars, Stellar Spectra, Stellar Spectrophotometry, Abundance, Distance, Hertzsprung-Russell Diagram, Interstellar Extinction, Milky Way Galaxy, Stellar Luminosity, Stellar Rotation
Scientific paper
Spectral classification of a sample of fainter OB stars in the Small Magellanic Cloud (SMC) is used to derive a reliable distance estimate for the galaxy. Spectra of 19 stars in the SMC and six galactic stars were obtained with the CTIO 4-m Ritchey-Chretien image-tube spectrograph, and classified by comparison with standard spectra, taking into account the weakness of the metal lines in SMC spectra. Calculations of the distance moduli of each star yield a distance modulus of 19.1 magnitudes for the SMC, with a negligible foreground reddening. Comparison of H-R diagrams indicates the SMC to be 0.5 magnitudes more distant than the LMC. Line intensity tracings for the SMC stars reveal significant decreases in the line strengths of the C III, N III and Si lines of the SMC relative to the LMC and galactic stars, and allows the estimation of rotational velocities for the individual stars.
Crampton David
Greasley J.
No associations
LandOfFree
OB stars in the Small Magellanic Cloud does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with OB stars in the Small Magellanic Cloud, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and OB stars in the Small Magellanic Cloud will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1648178