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J/A+A/394/479     uvbyβ photometry of h and chi Per     (Capilla+, 2002)

CCD uvbyβ photometry of young open clusters. I. The double cluster h and χ Persei. Capilla, G., Fabregat J. <Astron. Astrophys. 394, 479 (2002)> =2002A&A...394..479C
ADC_Keywords: Clusters, open ; Photometry, CCD ; Photometry, H-beta ; Photometry, uvby ; Stars, B-type Keywords: techniques: photometric - stars: early-type - open clusters and associations: individual: NGC 869, NGC 884 Description: We present CCD uvbyβ photometry for stars in the nuclei of the young double cluster {h} and χ Persei. We find that the reddening is highly variable through the {h} Per nucleus, increasing from west to east, with values ranging from E(b-y)=0.328±0.022 in the western part to E(b-y)=0.465±0.025 in the south-east. Towards χ Persei the reddening is fairly constant, with E(b-y)=0.398±0.025. Both clusters share a common distance modulus of 11.7±0.1mag, and an age of logt=7.10±0.05 years. Objects: ------------------------------------------------------------------- RA (2000) DE Designations (File) ------------------------------------------------------------------- 02 19 05 +57 08 08 {h} Persei = NGC 869 (table6.dat) 02 22 01 +57 08 42 χ Persei = NGC 884 (table7.dat) ------------------------------------------------------------------- Nomenclature Notes: The cluster star numbering system is adopted from the WEBDA database (http://obswww.unige.ch/webda). Numbers lower than 3000 coincide with Oosterhoff (1937, Ann. Sterrewatch Leiden 17, 1) numbering. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table6.dat 110 252 Coordinates and photometry for stars in h Per table7.dat 110 271 Coordinates and photometry for stars in chi Per
See also: V/27 : Proper Motions and UBV Photometry in h+chi Per (Muminov 1980) J/A+A/394/47 : uvbyβ photometry of h and chi Per (Capilla+, 2002) J/AJ/122/248 : h and chi Per UBVI,Hα photometry (Keller+, 2001) J/ApJ/576/880 : CCD UBV photometry of h and χ Per (Slesnick+, 2002) J/PASP/114/233 : h and χ Per memberships (Uribe+, 2002) J/A+AS/119/271 : Be stars uvbyβ photometry (Fabregat+, 1996) Byte-by-byte Description of file: table6.dat table7.dat
Bytes Format Units Label Explanations
2- 5 I4 --- Star Star number 8- 9 I2 h RAh Right Ascension J2000 (hours) 11- 12 I2 min RAm Right Ascension J2000 (minutes) 14- 18 F5.2 s RAs Right Ascension J2000 (seconds) 20 A1 --- DE- Declination J2000 (sign) 21- 22 I2 deg DEd Declination J2000 (degrees) 24- 25 I2 arcmin DEm Declination J2000 (minutes) 27- 30 F4.1 arcsec DEs Declination J2000 (seconds) 35- 40 F6.3 mag Vmag V magnitude 42- 47 F6.3 mag b-y b-y color index 49- 54 F6.3 mag m1 m1 index 56- 61 F6.3 mag c1 c1 index 63- 68 F6.3 mag Hbeta ?=99.999 beta index (1) 71- 76 F6.3 mag e_Vmag ?=99.999 rms uncertainty on Vmag (1) 78- 83 F6.3 mag e_b-y ?=99.999 rms uncertainty on b-y (1) 85- 90 F6.3 mag e_m1 ?=99.999 rms uncertainty on m1 (1) 92- 97 F6.3 mag e_c1 ?=99.999 rms uncertainty on c1 (1) 99-104 F6.3 mag e_Hbeta ?=99.999 rms uncertainty on Hbeta (1) 107 I1 --- o_Vmag Number of measurements 110 I1 --- Member [0,1] Membership (0: nonmember, 1: member)
Note (1): 99.999 in any field indicates that no data is available.
Acknowledgements: Juan Fabregat
(End) Juan Fabregat 20-Aug-2002
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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