J/other/JAD/13.3 BVRI light curves of some cool giant stars (Adelman+, 2007)
Johnson BV and Cousins RI photometry of some cool giant stars.
Adelman S.J., Colegrove B.S., Woodrow S.L.
<Journal Astronom. Data, 13, 3 (2007)>
=2007JAD....13....3A 2007JAD....13....3A
ADC_Keywords: Stars, S ; Stars, giant ; Photometry
Keywords: Photometry - giants - S stars
Abstract:
We examine Johnson BV and Cousins RI photometry of the cool giant stars
HR 1105, HD 35155, HR 4088, TU CVn, IT Vir, and HR 7442, that the
first author obtained with the Four College Automated Photoelectric
Telescope. The new data for HR 1105 show that its variability is more
complex than previously thought. Except a 0.3 phase gap in the
photometry of HD 35155, the amplitude of variability is fairly
constant. For HR 4088, except for one season, we did not find any
periods shorter than 100 days. For the barium star IT Vir assuming the
orbital period is the photometric period, the light curves consist of
two similar subparts each one-half of the orbital period long. But
there are problems with concluding that this star is an ellipsoidal
variable. For HR 7442, more data is needed to derive an accurate
period. A few observations are also presented of HR 1556, HR 363,
HD 58521, and HD 49368.
Description:
The data present Johnson BV and Cousins RI photometry of 6 cool giant
stars: HR 1105, HD 35155, HR 4088, TU CVn, IT Vir, and HR 744.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 53 30 Photometric Groups
photom.dat 83 927 Differential photometry of 10 stars
table10.dat 84 54 Seasonal averages for individual stars
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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- 6 I6 --- HD HD number
9- 20 A12 --- Name Star name
21- 22 A2 --- Role [v c ch] star role: variable, comparison, check
25- 28 F4.2 mag Vmag V magnitude
30- 34 F5.2 mag B-V B-V colour index
36- 51 A16 --- SpType MK spectral type
53 I1 --- fltr [1/5] Neutral density filter (1)
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Note (2): Filters as follows:
1 = no neutral density filter
2 = 1.25mag neutral density filter
3 = 2.50mag neutral density filter
4 = 3.75mag neutral density filter
5 = 5.00mag neutral density filter
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Byte-by-byte Description of file: photom.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliocentric Julian Date
15- 20 F6.3 mag dB1mag Differential v-c B magnitude (1)
23- 28 F6.3 mag dB0mag Differential ch-c B magnitude (1)
31- 36 F6.3 mag dV1mag Differential v-c V magnitude (1)
39- 44 F6.3 mag dV0mag Differential ch-c V magnitude (1)
47- 52 F6.3 mag dR1mag Differential v-c R magnitude (1)
55- 60 F6.3 mag dR0mag Differential ch-c R magnitude (1)
63- 68 F6.3 mag dI1mag Differential v-c I magnitude (1)
71- 76 F6.3 mag dI0mag Differential ch-c I magnitude (1)
78- 83 I6 --- HD HD number of variable star
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Note (1): Type of star: v = variable, c = comparison star, and ch = check star
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Byte-by-byte Description of file: table10.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Calc Calculation type: Average or Std. Deviation
11- 12 I2 --- Season Season used in calculation (1)
15- 20 F6.3 mag dB1mag Differential v-c B magnitude
23- 28 F6.3 mag dB0mag Differential ch-c B magnitude
31- 36 F6.3 mag dV1mag ?=- Differential v-c V magnitude
39- 44 F6.3 mag dV0mag Differential ch-c V magnitude
47- 52 F6.3 mag dR1mag Differential v-c R magnitude
55- 60 F6.3 mag dR0mag Differential ch-c R magnitude
63- 68 F6.3 mag dI1mag ?=- Differential v-c I magnitude
71- 76 F6.3 mag dI0mag Differential ch-c I magnitude
79- 84 I6 --- HD HD number of variable star
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Note (1): Seasons as follows: :
8 = 2450719-2450961 (1997-Sep/1998-Aug)
9 = 2451077-2451325 (1998-Sep/1999-Aug)
10 = 2451434-2451731 (1999-Sep/2000-Aug)
11 = 2451807-2452061 (2000-Sep/2001-Aug)
12 = 2452335-2452462 (2001-Sep/2002-Aug)
13 = 2452693-2452828 (2002-Sep/2003-Aug)
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Acknowledgements:
Chris Sterken, csterken(at)vub.ac.be
(End) C. Sterken [Vrije Univ. Brussel], Patricia Vannier [CDS] 02-May-2011