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J/A+A/295/101 Variable stars in field of NGC 7789 (Jahn+, 1995)
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Variable stars in the field of the open cluster NGC 7789
Jahn K., Kaluzny J., Rucinski S.M.
<Astron. Astrophys. 295, 101 (1995)>
=1995A&A...295..101J (SIMBAD/NED Reference)
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ADC_Keywords: Clusters, open ; Stars, variable
Keywords: binaries: close - binaries: eclipsing - delta Scu -
stars: variables: other -
open clusters and associations: individual: NGC 7789 - blue stragglers
Abstract:
Fifteen variable stars have been discovered during four nights of
monitoring of NGC 7789. It was possible to determine periods for ten of
these variables. Seven objects are W UMa-type binaries, in this number
five are members of the cluster. Among the remaining variables, there are
three further close binaries, one delta Scuti which is a blue straggler in
the cluster, and one multi-modal variable (with indeterminable periods).
One of the binaries showed an eclipse-like event; this binary is a good
candidate for determination of masses of its components at the turn-off
point of the cluster.
Objects:
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RA (2000) DE Designation(s)
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23 57.0 +56 44 NGC 7789 = C 2354+564 = OCl 269.0
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4 39 1601 NGC 7789 variable stars
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Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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1- 3 A3 --- Name Name of the variable
5- 18 F14.6 d HJD Heliocentric Julian day
21- 27 F7.4 mag Vmag V magnitude
30- 39 E10.3 mag e_Vmag rms uncertainty on V
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(End) Patricia Bauer [CDS] 02-Sep-1994