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HD 26010


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Delta a and Stroemgren photometry of stars in the Renson-catalogue of AP and AM stars
We have observed 131 stars of \cite[Renson's (1991)]{re91} catalogue ofAp and Am stars both in the Stroemgren & Maitzen's (1976) Delta asystem as a contribution to the photometric studies of the lambda 5200broad band flux depression feature in chemically peculiar stars. Withfew exceptions the probability grouping of Renson for membership in theCP2 group of peculiar stars is nicely reflected by peculiar values ofDelta a. Comparison with already available Delta a values yieldsslightly larger values due to a minor shift in the filter g_1 samplingthe depression. As found by \cite[Maitzen & Vogt (1983)]{ma83} theGeneva system peculiarity parameters correlate well with Delta a. Thisstudy demonstrates the advantageous performance of a photoelectricphotometer with a rapidly rotating filter wheel moving in a stop and gomode. Tables 3 and 4 are also available in electronic form at the CDSvia anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

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Observation and Astrometry data

Constellation:Fluss Eridanus
Right ascension:04h05m39.67s
Declination:-35°28'00.8"
Apparent magnitude:8.025
Distance:395.257 parsecs
Proper motion RA:13.1
Proper motion Dec:-15.7
B-T magnitude:9.435
V-T magnitude:8.142

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 26010
TYCHO-2 2000TYC 7036-960-1
USNO-A2.0USNO-A2 0525-01454080
HIPHIP 19099

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