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J/A+A/333/952 BVRI photometry of HR 1105 (Adelman 1998)
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BVRI photometry of the extrinsic S Star HR 1105
Adelman S.J.
<Astron. Astrophys. 333, 952 (1998)>
=1998A&A...333..952A (SIMBAD/NED BibCode)
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ADC_Keywords: Stars, S ; Stars, variable ; Photometry, UBVRI
Keywords: binaries: close - stars: individual: HR 1105 - stars: AGB, post AGB -
stars: variable: other
Abstract:
BVRI photometry of the extrinsic S star HR 1105 shows a stable
periodic light variability with a period of 24.76 days superimposed
upon long term changes presumably related to the orbital period. The
variations are in phase for all four magnitudes with the amplitude of
this variability being about the same for B and V, but smaller for R
and even smaller for I. As the primary is a M3 III star, these
brightness changes are mostly likely due to the pulsation of the
primary star.
Objects:
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RA (2000) DE Designation(s)
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03 42 09.4 +63 13 00 HR 1105 = HD 22649
03 46 02.3 +63 20 43 HD 23089 (comparison star)
03 46 00.3 +67 12 12 HD 23005 (check star)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 68 121 Differential photometry of HR 1105
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliocentric Julian Date
15- 19 F5.3 mag B(v-c) Variable-comparison (v-c) B magnitude
22- 26 F5.3 mag B(ch-c) Check-comparison (ch-c) B magnitude
29- 33 F5.3 mag V(v-c) Variable-comparison (v-c) V magnitude
36- 40 F5.3 mag V(ch-c) Check-comparison (ch-c) V magnitude
42- 47 F6.3 mag R(v-c) Variable-comparison (v-c) R magnitude
50- 54 F5.3 mag R(ch-c) Check-comparison (ch-c) R magnitude
56- 61 F6.3 mag I(v-c) Variable-comparison (v-c) I magnitude
64- 68 F5.3 mag I(ch-c) Check-comparison (ch-c) I magnitude
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Average and Standard deviation:
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B V R I
v-c ch-c v-c ch-c v-c ch-c v-c ch-c
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1991/92
average 1.161 1.838 0.266 1.502 -0.324 1.256 -1.204 0.983
std. dev. 0.017 0.008 0.026 0.003 0.025 0.005 0.012 0.003
1992/93
average 1.216 1.822 0.320 1.488 -0.283 1.241 -1.177 0.970
std. dev. 0.035 0.012 0.023 0.009 0.018 0.009 0.008 0.007
1993/94
average 1.221 1.839 0.301 1.511 -0.298 1.263 -1.201 0.988
std. dev. 0.032 0.010 0.041 0.007 0.037 0.009 0.020 0.009
1994/95
average 1.181 1.831 0.292 1.505 -0.297 1.260 -1.200 0.985
std. dev. 0.042 0.013 0.031 0.009 0.026 0.007 0.012 0.007
1995/96
average 1.244 1.827 0.343 1.502 -0.265 1.260 -1.185 0.986
std. dev. 0.061 0.012 0.062 0.009 0.052 0.008 0.029 0.007
all
average 1.222 1.828 0.323 1.501 -0.279 1.256 -1.188 0.983
std. dev. 0.057 0.013 0.055 0.011 0.044 0.010 0.024 0.009
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Acknowledgements: Saul J. Adelman <ADELMANS@adelvx.citadel.edu>
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(End) Patricia Bauer [CDS] 13-Feb-1998