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HD 1834


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Observations of active chromosphere stars
It is pointed out that spectroscopic signatures of stellar chromosphericactivity are readily observable. The present study is concerned with newphotometric and spectroscopic observations of active-chromosphere RSCVn, BY Dra, and FK Com stars. Attention is given to the first resultsof a synoptic monitoring program of many active chromosphere stars.During the time from 1980 to 1982, photometric and spectroscopicobservations of 10 known or suspected active-chromosphere objects weremade. The results regarding the individual stars are discussed. Sevenstars observed with the International Ultraviolet Explorer (IUE) are allspectroscopic binaries.

Local photometric standards for CaII emission stars
UBV data are given for 108 stars which are suitable local standards for52 stars with strong Ca2 emissions. An additional eight stars wererejected as possible standards because of suspected variability.

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Observation and Astrometry data

Constellation:Cetus
Right ascension:00h22m48.68s
Declination:-09°16'41.0"
Apparent magnitude:8.604
Distance:10000000 parsecs
Proper motion RA:-9.3
Proper motion Dec:-5.2
B-T magnitude:10.551
V-T magnitude:8.765

Catalogs and designations:
Proper Names
HD 1989HD 1834
TYCHO-2 2000TYC 5262-576-1
USNO-A2.0USNO-A2 0750-00088191
HIPHIP 1796

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