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HD 54191


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New periodic variables from the Hipparcos epoch photometry
Two selection statistics are used to extract new candidate periodicvariables from the epoch photometry of the Hipparcos catalogue. Theprimary selection criterion is a signal-to-noise ratio. The dependenceof this statistic on the number of observations is calibrated usingabout 30000 randomly permuted Hipparcos data sets. A significance levelof 0.1 per cent is used to extract a first batch of candidate variables.The second criterion requires that the optimal frequency be unaffectedif the data are de-trended by low-order polynomials. We find 2675 newcandidate periodic variables, of which the majority (2082) are from theHipparcos`unsolved' variables. Potential problems with theinterpretation of the data (e.g. aliasing) are discussed.

UBV beta Database for Case-Hamburg Northern and Southern Luminous Stars
A database of photoelectric UBV beta photometry for stars listed in theCase-Hamburg northern and southern Milky Way luminous stars surveys hasbeen compiled from the original research literature. Consisting of over16,000 observations of some 7300 stars from over 500 sources, thisdatabase constitutes the most complete compilation of such photometryavailable for intrinsically luminous stars around the Galactic plane.Over 5000 stars listed in the Case-Hamburg surveys still lackfundamental photometric data.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Kucuk Kopek
Sað Açýklýk:07h07m59.45s
Yükselim:+02°41'09.8"
Görünürdeki Parlaklýk:9.132
özdevim Sað Açýklýk:-0.9
özdevim Yükselim:-0.1
B-T magnitude:9.075
V-T magnitude:9.128

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 54191
TYCHO-2 2000TYC 167-877-1
USNO-A2.0USNO-A2 0900-04311062
HIPHIP 34405

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