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HD 34463


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Pulsations in the eclipsing variable system AS Camelopardalis
We performed photoelectric observations of AS Cam in 2002 2004. Five newtimes of minima were obtained. Their positions are consistent with thepreviously found light equation for the system and with the hypothesisthat the difference between the observed (15°/100 yr) andtheoretical (44°/100 yr) rates of apsidal motion results from thepresence of a third body in the system. A Fourier analysis of twoobservational data sets, 1968 1970 and 2002 2004, reveals, with a highsignificance, periodic light variations with a frequency of ω 0 =1.0950 ± 0.0001d-1 and an amplitude of ˜0 . m 020, which areprobably caused by the radial pulsations of one of the components. Wefound a seasonal phase shift of these oscillations that may be producedby other periodic processes in the system. We show that the fairly largescatter of observed times of minima about the theoretical curve of thelight equation can be explained by the presence of pulsations. Using the2002 and 2004 observations as an example, we show that including thepulsations reduces this scatter.

A third body in the eclipsing binary AS Cam
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The Third Body in the Eclipsing Binary AS Camelopardalis
The eclipsing variable AS Cam is a binary system with anomalously slowapsidal motion. We determined the times of minima from 1993 to 1996 andanalyzed them to reveal a "light time" effect with an amplitude of 3minutes and a period of 2.2 years thereby providing evidence for a thirdbody in the system.

Photoelectric minima of 30 eclipsing binary systems
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Stellar spectrophotometric standards. II
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HD 34409 - a delta Scuti Variable
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Apsidal motion in the eclipsing binary AS Cam
Multi-colour WBVR photoelectric observations of the eclipsing binary ASCam have been carried out and the photometric elements, absolutedimensions, and the angular velocity of a periastron motion(?obs) are determined. The obtained value of?obs is almost three times smaller than thattheoretically predicted.

The Photoelectric Elements of as Camelopardalis
Improved geometrical elements of the system AS Cam have been obtainedand the colour of the system has been discussed. The absolute dimensionshave also been obtained on the basis of the spectroscopic elements givenby Hilditch (1972). Both components are found to lie fairy on the MainSequence. The system is a detached one.

HD 34409 - a Suspected New Variable Star
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Observation and Astrometry data

Constellation:きりん座
Right ascension:05h23m29.73s
Declination:+69°33'53.7"
Apparent magnitude:8.466
Distance:161.812 parsecs
Proper motion RA:-9
Proper motion Dec:9.9
B-T magnitude:8.729
V-T magnitude:8.488

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 34463
TYCHO-2 2000TYC 4347-552-1
USNO-A2.0USNO-A2 1575-02313528
HIPHIP 25200

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