II/202 Long-term photometry of Variables IV (Sterken+, 1995)
Long-Term Photometry of Variables at ESO. IV.
The Fourth Data Catalogue (1992-1994)
Sterken C., Manfroid J., Beele D., de Koff S., Eggenkamp I.M.M.G.,
Goecking K., Jorissen A., Kaufer A., Kuss C., Schoenmakers A.P.,
Still J.M., van Loon J., Vink J., Vrielmann S., Waelde E.
<Astron. Astrophys. Suppl. Ser. 113, 31 (1995)>
=1995A&AS..113...31S 1995A&AS..113...31S
ADC_Keywords: Photometry, uvby ; Stars, variable
Description:
This is the fourth catalogue of photometric data in the Stroemgren
system obtained during the period June 18, 1992 - August 23, 1994
in the framework of the Long-Term Photometry of Variables (LTPV)
program at the European Southern Observatory.
Since our goal is not absolute (all-sky) photometry, the observations
should be used for differential photometry only.
The mean values of the r.m.s. deviations of the differential
measurements of comparison stars are around (from Table 3 of paper)
------------------------------
y b-y m1 c1
------------------------------
0.005 0.002 0.004 0.007
------------------------------
Important Notice:
The file "ltpv4" which was accessible at CDS before 20 October 1996
was incorrect.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ltpv4 64 14102 *The observations
stars4 77 324 The list of stars observed
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Note on ltpv4: this file has been corrected in October 1996 at CDS
(see the Important Notice above)
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See also:
II/170 : Long-Term Photometry of Variables at ESO I (1991)
II/188 : Long-Term Photometry of Variables at ESO II (1993)
II/200 : Long-Term Photometry of Variables at ESO III (1995)
Byte-by-byte Description of file: ltpv4
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Star Identification (1)
10- 20 F11.3 d HJD [2448791/2449596] Heliocentric Julian Date
22- 26 F5.3 --- Airmass Airmass quantity (sec.z)
28- 33 F6.3 mag ymag Stroemgren's y magnitude
37- 42 F6.3 mag b-y Stroemgren's b-y colour
46- 51 F6.3 mag m1 Stroemgren's m1 ((v-b)-(b-y)) colour
55- 60 F6.3 mag c1 Stroemgren's c1 ((u-v)-(v-b)) colour
64 A1 --- T/S [N] Telescope/system code ("N" is the
"natural" system")
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Note (1): The cross-identifications are explained in "stars4" file.
Program stars start with the letter P, and comparison stars
with A, B ...
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Byte-by-byte Description of file: stars4
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Star Identification, as in file "ltpv4".
7- 14 A8 --- HD HD designation
16- 21 A6 --- HR HR (Bright Star) designation
23- 34 A12 --- DM Durchmusterung (BD, CoD, CPD) designations
36- 45 A10 --- Name2 Other designation
47- 48 I2 h RAh Right Ascension J2000 (hours)
50- 51 I2 min RAm Right Ascension J2000 (minutes)
53- 54 I2 s RAs Right Ascension J2000 (seconds)
56 A1 --- DE- Declination J2000 (sign)
57- 58 I2 deg DEd Declination J2000 (degrees)
60- 61 I2 arcmin DEm Declination J2000 (minutes)
63- 64 I2 arcsec DEs Declination J2000 (seconds)
66- 77 A12 --- Sp Spectral classification
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History of the Catalogue:
* The original LaTeX files were provided by Chris Sterken in LaTeX
format in November 1995; an unfortunate error in the translation
from latex to ascii made at CDS generated an erroneous "ltpv4"
file, which was only detected in October 1996 thanks to
Ali Moujtahid
* 21-Oct-1996: file "ltpv4" recreated at CDS.
Acknowledgements:
We thank Chris Sterken for providing the
original catalogue in LaTeX format.
(End) Francois Ochsenbein [CDS] 21-Oct-1996