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J/PASP/105/1407 Rotation Periods of Open Cluster Stars II (Prosser+, 1993)
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Rotation Periods of Open Cluster Stars, II
Prosser C.F., Shetrone M.D., Marilli E., Catalano S., Williams S.D.,
Backman D.E., Laaksonen B.D., Adige V., Marschall L.A., Stauffer J.R.
<Publ. Astron. Soc. Pac., 105, 1407 (1993)>
=1993PASP..105.1407P
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ADC_Keywords: Stars, variable; Photometry; Stars, physical properties
Description:
This catalog contains the individual instrumental V magnitudes of 16 stars
from a photometric monitoring program of 21 stars observed during 1992 in
the Pleiades and Alpha Persei open clusters. The observations were
undertaken in order to determine rotational periods of the stars from
observed brightness variations. Brightness variations for an additional
five cluster stars are also given. The magnitudes in this dataset are
purely instrumental and have not been converted to a standard V mag system,
nor have they been converted to correspond to the mean V mag of the target
star. These magnitudes of the target and comparison stars should therefore
only be used in a differential sense. (See note (3)).
The column format varies slightly for each star listing because different
observations were measured to different precision and different numbers of
comparison stars were used. The general format is that the first column
contains the target stars' magnitude, followed by two or more columns of
comparison star magnitudes, and the Julian Dates of observation in the last
column.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
hii314.dat 38 87 HII 314, Pleiades
hii708.dat 38 88 HII 708, Pleiades
hii727.dat 38 85 HII 727, Pleiades
hii2741.dat 38 13 HII 2741, Pleiades
hii2881.dat 47 26 HII 2881, Pleiades
he373.dat 47 51 HE 373, Alpha Persei
he622.dat 47 40 HE 622 = AP 19, Alpha Persei
ap37.dat 47 53 AP 37, Alpha Persei
ap63.dat 39 26 AP 63, Alpha Persei
ap86.dat 39 26 AP 86, Alpha Persei
ap117n.dat 39 25 (NURO obs.) AP 117, Alpha Persei
ap117m.dat 47 20 (MDS obs.) AP 117, Alpha Persei
ap124.dat 39 100 AP 124, Alpha Persei
ap127.dat 47 21 AP 127, Alpha Persei
ap149.dat 47 40 AP 149, Alpha Persei
ap226.dat 47 48 AP 226, Alpha Persei
ap244.dat 47 16 AP 244, Alpha Persei
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Byte-by-byte Description of file: hii314.dat hii708.dat hii727.dat
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Bytes Format Units Label Explanations
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8- 12 F5.3 mag v relative V magnitude of target star (2)
20- 21 I2 --- N number of 20 sec observations in average
27- 38 F12.4 d JD Julian Date of observation
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Byte-by-byte Description of file: hii2741.dat
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Bytes Format Units Label Explanations
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2- 8 F7.3 mag mag relative V magnitude of target star (1)
9- 15 F7.3 mag v-A relative V magnitude of comparison star A
16- 22 F7.3 mag v-C relative V magnitude of comparison star C
26- 38 F13.5 d JD Julian Date of observation
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Byte-by-byte Description of file: hii2881.dat he373.dat he622.dat ap37.dat
Byte-by-byte Description of file: ap127.dat ap149.dat ap226.dat ap244.dat
Byte-by-byte Description of file: ap117m.dat
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Bytes Format Units Label Explanations
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2- 8 F7.3 mag mag relative V magnitude of target star
9- 15 F7.3 mag v-A relative V magnitude of comparison star A
16- 22 F7.3 mag v-A relative V magnitude of comparison star B
23- 29 F7.3 mag v-B relative V magnitude of comparison star C
35- 47 F13.5 d JD Julian Date of observation
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Byte-by-byte Description of file: ap63.dat ap86.dat ap117n.dat
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Bytes Format Units Label Explanations
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2- 8 F7.3 mag mag relative V magnitude of target star (1)
9- 15 F7.3 mag v-A relative V magnitude of comparison star A
16- 22 F7.3 mag v-B relative V magnitude of comparison star B
26- 38 F13.5 d JD Julian Date of observation
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Byte-by-byte Description of file: ap124.dat
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Bytes Format Units Label Explanations
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2- 8 F7.3 mag mag relative V magnitude of target star
9- 15 F7.3 mag v-A relative V magnitude of comparison star A
16- 22 F7.3 mag v-B relative V magnitude of comparison star B
27- 39 F13.5 d JD Julian Date of observation
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Note (1):
NURO observations of HII2741, AP63, AP86 and AP117 have a 'reverse'
magnitude system -- a brighter star has a larger listed instrumental V mag.
Note (2):
EM/SC observations of HII 314, 708 and 727 were made with a photoelectric
photometer, observing HII405, HII652 as comparison stars. The column 'N'
for their data gives the number of observations which were averaged
together (integration time of each measure was 20 sec).
Note (3):
The following identifications from Hertzsprung (1947, Ann. Leiden Obs. 19,
No.1A) for the Pleiades, and from the Guide Star Catalog for Alpha Per are
given for the comparison stars:
HII2741: A= HII2697 , C= HII2718
HII2881: A= HII2786 (variable), B= HII2917, C= HII2921
HE373: A= GSC3315.0532 , B= GSC3315.1104, C= GSC3315.1424
HE622 & AP149:
A= GSC3320.0965 , B= GSC3320.0777, C= GSC3320.0949
AP37: A= GSC3320.0001 , B= GSC3320.0615, C= GSC3320.0737
AP63: A= GSC3320.1221
AP117: A= GSC3320.1863 , B= GSC3320.1573, C= GSC3320.1103
AP124: A= GSC3319.1974 , B= GSC3319.1975
AP127: A= GSC3311.1925 , B= GSC3315.2422, C= GSC3311.1535
AP226: A= GSC3317.0225 , B= GSC3317.1013, C= GSC3317.1127
AP244: A= GSC3317.0705 , B= GSC3317.0795, C= ft. star north of AP244
See Also:
J/PASP/105/269 Light Curves for 10 Rapidly Rotating Stars (Prosser+, 1993)
Remarks:
July 1996: Original table separated by target star(s) by ADC (James Gass)
July 1996: Documentation standardized at ADC (James Gass)
References:
Prosser, C. 1992, AJ 103, 488
Radick, R. 1991, "The Sun in Time" van den Bergh S., ed. Sonnett, C.,
Giampapa, M., and Matthews, M. (University of Arizona), p. 787
Schussler, M., and Solanki, S. 1992, A&A 264, L13
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(End) James Gass [ADC] 31-Jul-1996