J/A+A/317/448 BVRHalpha photometry of NGC 1818 (Grebel 1997)
Be star surveys with CCD photometry. II.
NGC 1818 and its neighbouring cluster in the LMC.
Grebel E.K.
<Astron. Astrophys. 317, 448 (1997)>
=1997A&A...317..448G 1997A&A...317..448G (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Photometry, CCD
Keywords: galaxies: Magellanic Clouds - clusters: globular: NGC 1818 (LMC) -
galaxies: star clusters - stars: emission-line, Be -
stars: fundamental parameters
Description:
We present B,V,R,Halpha CCD photometry and astrometry of Be stars in
NGC 1818, its small neighbouring cluster NGC 1818B,
and the surrounding field down to V = 18 mag. Our Be star identifiers
conform to IAU specifications.
For a description of the UBVRI and Halpha systems, see e.g.
GCPD/08 and GCPD/55
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 87 72 Identifiers, photometry, astrometry of Be stars
in NGC 1818 and surroundings
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 16 A16 --- ID Be star identifier following IAU specs.
18- 21 A4 --- Rob Identifiers from Robertson (1974)
23- 25 I3 --- Will ? Identifiers from Will et al. (1995)
27 A1 --- Loc Location: A = Be star in NGC 1818,
B = NGC 1818B, F = field
29- 33 F5.1 arcsec Dist Distance from the center of NGC 1818
35- 39 F5.2 mag Vmag V magnitude
41- 44 F4.2 mag e_Vmag Photometric error of the V magnitude
46- 50 F5.2 mag B-V (B-V) colour
52- 55 F4.2 mag e_B-V Photometric error of the (B-V) colour
57- 60 F4.2 mag R-Halpha (R-Halpha) colour
62- 65 F4.2 mag e_R-Halpha Photometric error of the (R-Halpha) colour
67 I1 h RAh Right ascension (J2000)
69 I1 min RAm Right ascension (J2000)
71- 74 F4.1 s RAs Right ascension (J2000)
76 A1 --- DE- Declination sign
77- 78 I2 deg DEd Declination (J2000)
80- 81 I2 arcmin DEm Declination (J2000)
83- 84 I2 arcsec DEs Declination (J2000)
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Acknowledgements: E.K. Grebel
References:
Robertson 1974, A&AS 15, 261 =1974A&AS...15..261R 1974A&AS...15..261R
Will et al. 1995, A&AS 112,367 =Catalogue J/A+AS/112/367
Grebel E.K. et al. (Part I) 1992, A&A 254, L5 =1992A&A...254L...5G 1992A&A...254L...5G
(End) Patricia Bauer [CDS] 18-Jun-1996