J/A+A/352/600 O & B stars uvby-Hbeta photometry. I. (Kaltcheva+, 1999)
Stroemgren and Hβ photometry of O and B type stars in star-forming regions.
I. Canis Major - Puppis - Vela.
Kaltcheva N.T., Olsen E.H.
<Astron. Astrophys. 352, 600 (1999)>
=1999A&A...352..600K 1999A&A...352..600K
ADC_Keywords: Photometry, uvby, beta ; Stars, early-type
Keywords: stars: early-type
Abstract:
Stroemgren and Hβ photometry of OB-stars generally brighter than
9.5mag in the Canis Major - Puppis - Vela region of Milky Way is
reported. The observations are based on the Milky Way luminous-star
(LS) identifications and are designed to create a complete,
magnitude-limited sample of LS for this field. We present new uvby
photometry for 127 LS and Hβ photometry for 25 of them. These
observations are part of an ongoing effort to improve the completeness
of the existing uvbyβ data-base for the bright OB-type stars in
the Milky Way, with the aim to investigate the structure of selected
star-forming regions.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 31 127 Star positions from Simbad database
table3.dat 79 127 uvby catalogue
table4.dat 26 25 Hβ catalogue
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See also:
III/76 : Luminous Stars in the Northern Milky Way
III/43 : Luminous Stars in the Southern Milky Way (Stephenson+ 1971)
J/A+A/352/605 : O & B stars uvby-Hbeta photometry. II. (Kaltcheva+, 1999)
J/A+AS/146/365 : O & B stars uvby-Hbeta photometry. III. (Kaltcheva+, 2000)
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension (J2000.0)
4- 5 I2 min RAm Right ascension (J2000.0)
7- 10 F4.1 s RAs Right ascension (J2000.0)
12 A1 --- DE- Declination sign (J2000.0)
13- 14 I2 deg DEd Declination (J2000.0)
16- 17 I2 arcmin DEm Declination (J2000.0)
19- 20 I2 arcsec DEs Declination (J2000.0)
23- 32 A10 --- LS LS (Cat. III/76 & III/43) designation
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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- 9 A9 --- LS LS (Cat. III/76 & III/43) number
12- 17 F6.3 mag Vmag transformed to the standard Johnson Vmag
19- 23 F5.3 mag e_Vmag Internal rms errors of one observation on Vmag
25- 30 F6.3 mag (b-y) Stroemgren colour index
32- 36 F5.3 mag e_(b-y) rms uncertainty on (b-y) (1)
38- 43 F6.3 mag m1 m1 = (v-b) - (b-y) colour index
45- 49 F5.3 mag e_m1 rms uncertainty on m1 (1)
51- 56 F6.3 mag c1 c1 = (u-v) - (v-b) colour index
58- 62 F5.3 mag e_c1 rms uncertainty on c1 (1)
64 I1 --- w_Vmag Weight of V mag
66 I1 --- w_m1 Weight of 4-colour indices
68 I1 --- o_Vmag Number of nights for each star
70- 75 I6 --- HD ? HD cross-identification
77- 79 I3 --- LS2 ? Cross-identifications between luminous stars
catalogues
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Note (1): Internal rms errors of one observation (weight 1)
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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- 9 A9 --- LS LS (Cat. III/76 & III/43) number
11- 15 F5.3 mag Hbeta Hβ index
17- 21 F5.3 mag e_Hbeta Internal rms errors of one observation (weight 1)
23- 24 I2 --- w_Hbeta Weight of Hβ index
26 I1 --- o_Hbeta Number of nights for each star
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Acknowledgements: Nadia Kaltcheva
(End) Patricia Bauer [CDS] 10-Dec-1999