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HD 7560


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Intermediate band photometry of late-type stars. II - Some stellar groups
Observations on the (R, I) system and a modified Stromgren system ofmembers of six stellar groups are used to demonstrate the chemicalhomogeneity of some 70% or 80% of the members assigned to the groups onthe basis of kinematics. The groups discussed are the Hyades, Wolf 630,Arcturus, Groombridge 1830, and Kapteyn's Star Groups as well as ananonymous group of a half dozen subdwarfs with (U, V) near (-150, -320)km/s. Standards for a previously described photometric system areextended, and additional F- and G-type standards for the (R, I) systemare presented. A simple relation is derived for computing the Fe/Habundance ratio for most stars in the corrected (R-I) interval from +0.2to +0.45 magnitude.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Zincirli Prenses
Sað Açýklýk:01h16m10.78s
Yükselim:+35°13'52.6"
Görünürdeki Parlaklýk:8.273
Uzaklýk:471.698 parsek
özdevim Sað Açýklýk:-4.7
özdevim Yükselim:-3.2
B-T magnitude:9.433
V-T magnitude:8.369

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 7560
TYCHO-2 2000TYC 2299-356-1
USNO-A2.0USNO-A2 1200-00524500
HIPHIP 5923

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