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TYC 663-596-1


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A catalogue of close binaries located in the δ Scuti region of the Cepheid instability strip
A catalogue of close eclipsing binary systems (detached andsemidetached) with at least one of the components located in the δScuti region of the Cepheid instability strip is presented. Thepositions of the stars in the instability strip are determined by theiraccurate temperatures and luminosities. Observationally detectedbinaries (20 semidetached, four detached and one unclassified) withoscillating components were included in the catalogue as a separatetable. The primaries of the oscillating Algols tend to be located nearthe blue edge of the instability strip. Using reliable luminosities andtemperatures determined by recent photometric and spectroscopic studies,we have found that at least one or two components of 71 detached and 90semidetached systems are located in the δ Scuti region of theCepheid instability strip. In addition, 36 detached or semidetachedsystems discovered by the Hipparcos satellite were also given as aseparate list. One of their components is seen in the δ Scutiregion, according to their spectral type or B - V colours. They arepotential candidate binaries with the δ Scuti-type pulsatingcomponents which need further photometric and spectroscopic studies inbetter precision. This catalogue covers information and literaturereferences for 25 known and 197 candidate binaries with pulsatingcomponents.

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Observation and Astrometry data

Constellation:Taurus
Right ascension:03h40m09.96s
Declination:+13°11'55.4"
Apparent magnitude:10.025
Proper motion RA:26.3
Proper motion Dec:-24.7
B-T magnitude:10.913
V-T magnitude:10.099

Catalogs and designations:
Proper Names
TYCHO-2 2000TYC 663-596-1
USNO-A2.0USNO-A2 0975-00798776
HIPHIP 17133

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