New Estimates of the Solar-Neighborhood Massive Star Birthrate and the Galactic Supernova Rate
The birthrate of stars of masses >=10 Msolar is estimatedfrom a sample of just over 400 O3-B2 dwarfs within 1.5 kpc of the Sunand the result extrapolated to estimate the Galactic supernova ratecontributed by such stars. The solar-neighborhood Galactic-plane massivestar birthrate is estimated at ~176 stars kpc-3Myr-1. On the basis of a model in which the Galactic stellardensity distribution comprises a ``disk+central hole'' like that of thedust infrared emission (as proposed by Drimmel and Spergel), theGalactic supernova rate is estimated at probably not less than ~1 normore than ~2 per century and the number of O3-B2 dwarfs within the solarcircle at ~200,000.
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Catalog of Galactic OB Stars
An all-sky catalog of Galactic OB stars has been created by extendingthe Case-Hamburg Galactic plane luminous-stars surveys to include 5500additional objects drawn from the literature. This work brings the totalnumber of known or reasonably suspected OB stars to over 16,000.Companion databases of UBVβ photometry and MK classifications forthese objects include nearly 30,000 and 20,000 entries, respectively.
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UBV beta Database for Case-Hamburg Northern and Southern Luminous Stars
A database of photoelectric UBV beta photometry for stars listed in theCase-Hamburg northern and southern Milky Way luminous stars surveys hasbeen compiled from the original research literature. Consisting of over16,000 observations of some 7300 stars from over 500 sources, thisdatabase constitutes the most complete compilation of such photometryavailable for intrinsically luminous stars around the Galactic plane.Over 5000 stars listed in the Case-Hamburg surveys still lackfundamental photometric data.
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A spectroscopic database for Stephenson-Sanduleak Southern Luminous Stars
A database of published spectral classifications for objects in theStepenson-Sanduleak Luminous Stars in the Southern Milky Way catalog hasbeen compiled from the literature. A total of 6182 classifications for2562 stars from 139 sources are incorporated.
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A study of reddened luminous stars in the southern Milky Way. IV. JHK photometry.
Not Available
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A study of reddened luminous stars in the southern Milky Way. III. VRI photometry.
Not Available
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A study of reddened luminous stars in the southern Milky Way. II. H-beta photometry, reddening and distances.
Not Available
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A study of reddened luminous stars in the southern Milky Way. UVBY photometry.
Not Available
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Exciting stars and the distances of the diffuse nebulae
Not Available
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A study of early-type stars in an area in Puppis
Observations by photoelectric photometry are presented for 38 OB starsin a 12 square degree area centered at 1 equal to 236 deg and b equal to+2 deg; 31 stars were measured in UBV beta, 9 in UBV only. Theinterstellar dust is found to be nonuniformly distributed between oneand two kpc from the sun. In addition, most of the stars earlier than B3and without emission features are situated between r equal to 2.5 and4.2 kpc. The spiral arm structure in the third quadrant is discussed,and the idea of a Perseus arm extension is found to be more likely thanthe suggestion of an extension of the Local arm in the direction of 1approximately equal to 240 deg.
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The rotation and structure of the galaxy beyond the solar circle. I - Photometry and spectroscopy of 276 stars in 45 H II regions and other young stellar groups toward the galactic anticentre
Abstract image available at:http://adsabs.harvard.edu/abs/1979A&AS...38..197M
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Observations de nouvelles regions HII galactiques et d'etoiles excitatrices
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1973A&A....25..337G&db_key=AST
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A Finding List of High-Luminosity Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1951ApJ...113..309M&db_key=AST
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INHABITED SKY
