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J/A+A/352/605       O & B stars uvby-Hbeta photometry. II.  (Kaltcheva+, 1999)

Stroemgren and Hβ photometry of O and B type stars in star-forming regions. II. Monoceros OB2, Canis Major OB1 and Collinder 121. Kaltcheva N.T., Olsen E.H., Clausen J.V. <Astron. Astrophys. 352, 605 (1999)> =1999A&A...352..605K (SIMBAD/NED BibCode)
ADC_Keywords: Photometry, uvby, beta; Stars, early-type Keywords: stars: early-type - Galaxy: open clusters and associations: Mon OB2, CMa OB1, Col 121 Abstract: Stroemgren and Hβ photometry of O and B type stars, generally brighter than 10mag is presented for the fields of the galactic OB associations Monoceros OB2, Canis Major OB1 and Collinder 121. The observations are based on the PPM catalogue identifications and are designed to improve the completeness of the existing uvbyβ data for the bright early-type stars in these fields. We present new uvby photometry for 343 stars and Hβ photometry for 213 of them. These observations are part of our effort to study the structure of selected star-forming regions in the Milky Way, utilizing uvbyβ photometry. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file stars.dat 75 343 Star positions from Simbad database table3.dat 73 343 uvby catalogue table4.dat 31 213 Hbeta catalogue
See also: I/146 : Positions and Proper Motions - North (Roeser+, 1988) I/193 : Positions and Proper Motions - South (Bastian+ 1993) I/208 : The 90000 stars Supplement to the PPM Cat. (Roeser+, 1994) J/A+A/352/600 : O & B stars uvby-Hbeta photometry. I. (Kaltcheva+, 1999) J/A+AS/146/365 : O + B stars uvby-Hbeta photometry. III. (Kaltcheva+, 2000) Byte-by-byte Description of file: stars.dat
Bytes Format Units Label Explanations
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- 28 I6 --- PPM PPM (Cat. I/146 & I/193) designation
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 6 I6 --- PPM PPM (Cat. I/146 & I/193) number 8- 13 F6.3 mag Vmag Magnitude transformed to the standard Johnson V magnitude 15- 19 F5.3 mag e_Vmag rms uncertainty on Vmag (1) 21- 26 F6.3 mag (b-y) Stroemgren colour index 28- 32 F5.3 mag e_(b-y) rms uncertainty on (b-y) (1) 34- 39 F6.3 mag m1 m1 = (v-b) - (b-y) colour index 41- 45 F5.3 mag e_m1 rms uncertainty on m1 (1) 47- 52 F6.3 mag c1 c1 = (u-v) - (v-b) colour index 54- 58 F5.3 mag e_c1 rms uncertainty on c1 (1) 60 I1 --- w_Vmag Weight of Vmag 62 I1 --- w_m1 Weight of 4-colour indices 64 I1 --- o_Vmag Number of the nights for each star 66- 73 A8 --- Field The field where the star is located
Note (1): Internal rms errors of one observation (weight 1)
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 6 I6 --- PPM PPM (Cat. I/146 & I/193) number 8- 12 F5.3 mag Hbeta Hβ index 14- 18 F5.3 mag e_Hbeta Internal rms errors of one observation (weight 1) on Hβ index 20 I1 --- w_Hbeta Weight of Hβ index 22 I1 --- o_Hbeta Number of the nights for each star 24- 31 A8 --- Field The field where the star is located
Acknowledgements: Nadia Kaltcheva
(End) Patricia Bauer [CDS] 10-Dec-1999
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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