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HD 13952


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Infrared observations of metal-deficient stars
Infrared magnitudes in the J, H, K and L bands for 64 metal-deficientstars spanning a wide range in effective temperature, luminosity andmetal content are presented. An accuracy of 0.02 magnitude is obtainedfor the JHK bands and 0.03 for the L filter. Infrared-infrared andoptical-infrared color-color diagrams are discussed and compared withthe mean intrinsic tracks for Population I stars. It is concluded thatinfrared colors are not notably dependent on metallicity, with someexceptions for the reddest giants, which can be also interpreted byresidual effects in the transformation equations between differentsystems. The near infrared photometric system of the Observatorio delTeide, from the Instituto de Astrofisica de Canarias, is also brieflydiscussed.

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Observation and Astrometry data

Constellation:Οκτάς
Right ascension:01h50m16.57s
Declination:-87°13'42.6"
Apparent magnitude:9.209
Proper motion RA:-24.5
Proper motion Dec:-22.7
B-T magnitude:9.868
V-T magnitude:9.264

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 13952
TYCHO-2 2000TYC 9498-259-1
USNO-A2.0USNO-A2 0000-00109651
HIPHIP 8550

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