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TYC 7113-2020-1


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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.

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.

Photoelectric and spectroscopic observations of Bochum 15
Abstract image available at:http://adsabs.harvard.edu/abs/1977A&A....60..417J

UBV, Hbeta and polarization measurements of 1660 southern OB stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1977A&AS...27..215K&db_key=AST

Bochum 15, a new young stellar aggregate in Puppis.
Abstract image available at:http://adsabs.harvard.edu/abs/1976A&A....46..287F

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Dades d'Observació i Astrometria

Constel·lació:Puppis
Ascensió Recta:07h36m42.03s
Declinació:-34°25'16.8"
Magnitud Aparent:10.192
Moviment propi RA:-5.6
Moviment propi Dec:5.4
B-T magnitude:10.419
V-T magnitude:10.211

Catàlegs i designacions:
Noms Propis   (Edit)
TYCHO-2 2000TYC 7113-2020-1
USNO-A2.0USNO-A2 0525-05705310
HIPHIP 37039

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