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HD 39304


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The local system of early type stars - Spatial extent and kinematics
Published uvby and H-beta photometric data and proper motions arecompiled and analyzed to characterize the structure and kinematics ofthe bright early-type O-A0 stars in the solar vicinity, with a focus onthe Gould belt. The selection and calibration techniques are explained,and the data are presented in extensive tables and graphs and discussedin detail. The Gould belt stars of age less than 20 Myr are shown togive belt inclination 19 deg to the Galactic plane and node-lineorientation in the direction of Galactic rotation, while the symmetricaldistribution about the Galactic plane and kinematic properties (purecircular differential rotation) of the belt stars over 60 Myr oldresemble those of fainter nonbelt stars of all ages. The unresolveddiscrepancy between the expansion observed in the youngest nearby starsand the predictions of simple models of expansion from a point isattributed to the inhomogeneous distribution of interstellar matter.

Four-color and H-beta photometry for O-A0 type stars in three regions near the galactic equator
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1982A&AS...49..561W&db_key=AST

Interstellar extinction and ultraviolet flux distribution of the Crab Nebula
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1981ApJ...245..581W&db_key=AST

Vitesses radiales dans 4 champs de petite latitude galactique.
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Observation and Astrometry data

Constellation:Taureau
Right ascension:05h52m58.64s
Declination:+28°27'39.1"
Apparent magnitude:9.216
Proper motion RA:-0.3
Proper motion Dec:-3
B-T magnitude:9.231
V-T magnitude:9.218

Catalogs and designations:
Proper Names
HD 1989HD 39304
TYCHO-2 2000TYC 1875-2194-1
USNO-A2.0USNO-A2 1125-02945977
HIPHIP 27800
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