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HD 45560

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The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1995ApJS...99..135A&db_key=AST
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.
UBV photometry of stars whose positions are accurately known. VI Results are presented from UBV photometric observations of 1000 stars ofthe Bright Star Catalogue and the faint extension of the FK5.Observations were carried out between July 1987 and December 1990 withthe 40-cm Cassegrain telescope of the Kvistaberg Observatory.
A. de Sitter's photographic polar photometry revisited; some remarks on photographic photometry with objective gratings Not Available
The Sirius supercluster Photometric data on the chemical composition of 927 A stars in the UrsaMajor stream, called the Sirius supercluster, were used to estimate theage and place of formation of the objects. The stars studied are in thesolar neighborhood and have been observed to be co-moving in a velocityellipsoid with a (U, V) velocity of 10.3 km/sec and concentrated in aspatial volume less than 10 pc across. The Stromgren and Geneva systemphotometric data show that the supercluster is homogeneous in chemicalcontent, although the value of the forbidden Fe/H ratio could not beprecisely determined. The supercluster age is projected to be from260-620 Myr, with the origin having been in the Carina spiral arm of theGalaxy.
Rotational Velocities of a0 Stars Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974ApJS...28..101D&db_key=AST
Four-color and Hβ photometry for the brighter AO type stars Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972A&AS....5..109C&db_key=AST
Photographic magnitudes of stars brighter than 7m.75 between +75° and +80° declination (Errata: 11 270) Not Available
Yerkes actinometry. Zone +73deg to +90deg. Not Available

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:	Zurafa
Sað Açýklýk:	06^h40^m16.80^s
Yükselim:	+79Â°35'58.0"
Görünürdeki Parlaklýk:	6.54
Uzaklýk:	114.548 parsek
özdevim Sað Açýklýk:	-2.7
özdevim Yükselim:	17.4
B-T magnitude:	6.797
V-T magnitude:	6.747

Kataloglar ve belirtme:

Özgün isimleri	(Edit)
HD 1989	HD 45560
TYCHO-2 2000	TYC 4534-868-1
USNO-A2.0	USNO-A2 1650-01114774
BSC 1991	HR 2346
HIP	HIP 31922

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