J/AJ/118/2211 M31F eclipsing binaries and Cepheids (Mochejska+ 1999)
DIRECT distances to nearby galaxies using detached eclipsing binaries and
Cepheids. V. Variables in the field M31F.
Mochejska B.J., Kaluzny J., Stanek K.Z., Krockenberger M., Sasselov D.D.
<Astron. J. 118, 2211 (1999)>
=1999AJ....118.2211M 1999AJ....118.2211M
ADC_Keywords: Stars, variable ; Binaries, eclipsing ; Photometry
Keywords: binaries: eclipsing - Cepheids - distance scale -
galaxies: individual (M31) - stars: variables: other
Abstract:
As a first step in the DIRECT project, between September 1996 and
October 1997 we obtained 95 full/partial nights on the F.L. Whipple
Observatory 1.2m telescope and 36 full nights on the
Michigan-Dartmouth-MIT 1.3 m telescope to search for DEBs and new
Cepheids in the M31 and M33 galaxies. In this paper, the fifth in the
series, we present the catalog of variable stars found in the field
M31F [(RA, DE) = (10.10°, 40.72°), J2000.0]. We have found 64
variable stars: four eclipsing binaries, 52 Cepheids and eight other
periodic, possible long-period or nonperiodic variables. The catalog
of variables, as well as their photometry and finding charts, is
available via anonymous ftp and the World Wide Web. The complete set
of the CCD frames is available upon request.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 70 4 DIRECT eclipsing binaries in M31F
table2.dat 51 52 DIRECT Cepheids in M31F
table3.dat 67 1 DIRECT other periodic variables in M31F
table4.dat 62 7 DIRECT miscellaneous variables in M31F
table5.dat 38 649 Light curves of eclipsing binaries in M31F
table6.dat 38 9097 Light curves of Cepheids in M31F
table7.dat 38 180 Light curves of other periodic variables in M31F
table8.dat 38 1162 Light curves of miscellaneous variables in M31F
table9.dat 51 38 Cross-identifications of the DIRECT Cepheid
variables in M31F
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See also:
J/AJ/115/1016 : M31B eclipsing binaries and Cepheids (Kaluzny+ 1998)
J/AJ/115/1894 : M31A eclipsing binaries and Cepheids (Stanek+ 1998)
J/AJ/117/2810 : M31C eclipsing binaries and Cepheids (Stanek+, 1999)
J/AJ/118/346 : M31D eclipsing binaries and Cepheids (Kaluzny+ 1999)
J/AJ/122/1383 : DIRECT BVI photometry in M31 (Mochejska+, 2001)
J/A+AS/126/401 : M 31 Cepheids periods (Magnier+ 1997)
http://cfa-www.harvard.edu/~kstanek/DIRECT : DIRECT project
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Variable name
7- 13 F7.4 deg RAdeg Decimal right ascension (J2000.0)
15- 21 F7.4 deg DEdeg Decimal declination (J2000.0)
23- 28 F6.4 d Per Period
30- 34 F5.2 mag Vmax Maximum Johnson V magnitude
36- 40 F5.2 mag Imax ? Maximum Cousins I magnitude
42- 46 F5.2 mag Bmax Maximum Johnson B magnitude
48- 51 F4.2 --- R1 First component radius (1)
53- 56 F4.2 --- R2 Second component radius (1)
58- 59 I2 deg Inc Inclination angle
61- 64 F4.2 --- e Ellipticity
66- 70 A5 --- Com Comments
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Note (1): in orbital separation units
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Variable name
7- 13 F7.4 deg RAdeg Decimal right ascension (J2000.0)
15- 21 F7.4 deg DEdeg Decimal declination (J2000.0)
23- 28 F6.3 d Per Period
30- 34 F5.2 mag <Vmag> Flux-weighted mean Johnson V magnitude
36- 40 F5.2 mag <Imag> ? Flux-weighted mean Cousins I magnitude
42- 46 F5.2 mag <Bmag> ? Flux-weighted mean Johnson B magnitude
48- 51 F4.2 mag Amp V-band amplitude of the variation
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Variable name
7- 13 F7.4 deg RAdeg Decimal right ascension (J2000.0)
15- 21 F7.4 deg DEdeg Decimal declination (J2000.0)
23- 25 F3.1 d Per Period
27- 31 F5.2 mag Vmagb Error-weighted mean Johnson V magnitude
33- 37 F5.2 mag Imagb ? Error-weighted mean Cousins I magnitude
39- 43 F5.2 mag Bmagb Error-weighted mean Johnson B magnitude
45- 48 F4.2 mag e_Vmagb Standard deviation in Johnson V band
50- 53 F4.2 mag e_Imagb Standard deviation in Cousins I band
55- 58 F4.2 mag e_Bmagb Standard deviation in Johnson B band
60- 67 A8 --- Com Comments (1)
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Note (1): V7438 was identified by Baade & Swope (1965AJ.....70..212B 1965AJ.....70..212B) as Cepheid
variable 232 with P=5.12days.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Variable name
7- 13 F7.4 deg RAdeg Decimal right ascension (J2000.0)
15- 21 F7.4 deg DEdeg Decimal declination (J2000.0)
23- 27 F5.2 mag Vmagm Mean Johnson V magnitude
29- 33 F5.2 mag Imagm ? Mean Cousins I magnitude
35- 39 F5.2 mag Bmagm Mean Johnson B magnitude
41- 44 F4.2 mag e_Vmagm Standard deviation in Johnson V band
46- 49 F4.2 mag e_Imagm Standard deviation in Cousins I band
51- 54 F4.2 mag e_Bmagm Standard deviation in Johnson B band
56- 62 A7 --- Com Comments (1)
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Note (1): V7438 was identified by Baade & Swope (1965AJ.....70..212B 1965AJ.....70..212B) as Cepheid
variable 232 with P=5.12days.
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Byte-by-byte Description of file: table[5678].dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Variable name
7- 10 A4 --- --- [D31F] Field name
12 A1 --- Band [BIV] Band (Johnson BV and Cousins I)
14- 25 F12.4 d HJD Heliocentric Julian date
27- 32 F6.3 mag mag Magnitude in band "Band"
34- 38 F5.3 mag e_mag rms uncertainty on mag
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Variable name
7- 12 F6.3 d Per Period
14- 16 I3 --- FieldIII ? Number in Field II (1)
18- 23 F6.3 d PerIII ? Period from Field II (1)
26- 28 I3 --- FieldII ? Number in Field III (1)
30- 35 F6.3 d PerII ? Period from Field III (1)
38- 45 A8 --- Other Other name (1)
47- 51 F5.2 d PerO ? Period from Other
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Note (1): the columns FieldII/PerII and FieldIII/PerIII are inverted
in the printed paper.
Field II: Gaposchkin, 1962AJ.....67..334G 1962AJ.....67..334G
Field III: Baade & Swope, 1965AJ.....70..212B 1965AJ.....70..212B
Ma97: Magnier et al. (1997) A&AS,126, 401
H : Hubble (1929) ApJ, 63, 236
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History: From AJ electronic version
* 26-Jun-2001: it was noticed that the columns FieldII/PerII and
FieldIII/PerIII are inverted in the printed paper -- the
"Byte-by-byte Description" of table9 was corrected.
(End) Patricia Bauer [CDS] 20-Jan-2000