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HD 236382


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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.

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.

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.

Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.

LkH-alpha 198 and V 376 Cassiopeiae - Speckle interferometric and polarimetric observations of circumstellar dust
The circumstellar material close to the stellar sources is investigated,and its distribution and its relations to the general optical appearanceand the orientation of the molecular outflow are determined. Speckleobservations were carried out with a near-infrared speckleinterferometer between September 1986 and October 1989. LkH-alpha 198shows a complicated structure without clear alignment, and this is alsotrue on subarcsec (less than 1000 AU) scales. V 376 Cas appears to be abipolar nebula, seen nearly edge-on, oriented at position angle 120 deg.The orientations of LkH-alpha 198 and V 376 show no obvious relationswith the interstellar field direction. The near-infrared albedo ofcircumstellar dust is quite high both in the case of LkH-alpha 198 and V376 Cas, which indicates a larger particle size than typical forinterstellar dust.

A spectral survey of early-type stars in the region of Cassiopeia using an objective prism
Not Available

Cinq nouvelles etoiles B a emission.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1975A&A....40..203B&db_key=AST

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관측 및 측정 데이터

별자리:카시오페이아자리
적경:00h20m30.08s
적위:+60°17'07.6"
가시등급:8.844
거리:6250 파섹
적경상의 고유운동:-2.3
적위상의 고유운동:-2.7
B-T magnitude:9.056
V-T magnitude:8.862

천체목록:
일반명   (Edit)
HD 1989HD 236382
TYCHO-2 2000TYC 4015-2897-1
USNO-A2.0USNO-A2 1500-00381235
HIPHIP 1637

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