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TYC 3322-816-1


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Membership of low-mass stars in the open cluster Alpha Persei
The results of a combined astrometric, photometric, and spectroscopicsearch for low-mass members in the intermediate-age open cluster AlphaPersei are presented. Over 130 low-mass new members have been identifiedto M(v) about 12.5, almost doubling the previous number of knownmembers. The new membership information suggests a slight upwardrevision of Alpha Per's age to about 8 x 10 exp 7 yr. Alpha Per isnoticeably spatially elongated in a direction parallel to the Galacticplane, most likely due to tidal deformation. Analysis of thedistribution of relative H-alpha emission strengths among Alpha Permembers confirms the view that the mean H-alpha strength decreases inincreasingly older systems. Allowing for survey incompleteness, onecannot reject the idea that the luminosity function is consistent withthe field luminosity function to M(v) about 9 or 10.

The H-R diagram of the alf Per cluster.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971AJ.....76..242M&db_key=AST

Photometry of the α Persei Cluster.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1960ApJ...132...68M&db_key=AST

Eigenbewegungen in der Umgebung von α Persei
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Membro dei seguenti gruppi:


Osservazione e dati astrometrici

Costellazione:Perseo
Ascensione retta:03h07m04.10s
Declinazione:+51°17'40.3"
Magnitudine apparente:10.04
Moto proprio RA:17
Moto proprio Dec:-19.3
B-T magnitude:10.788
V-T magnitude:10.102

Cataloghi e designazioni:
Nomi esatti   (Edit)
TYCHO-2 2000TYC 3322-816-1
USNO-A2.0USNO-A2 1350-03069774
HIPHIP 14490

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