J/MNRAS/358/66 uvby{beta} photometry of NGC 663 (Fabregat+, 2005) ================================================================================ CCD uvby{beta} photometry of the young open cluster NGC 663 Fabregat J., Capilla, G. =2005MNRAS.358...66F (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Clusters, open; Photometry, CCD; Photometry, H-beta; Photometry, uvby; Stars, Be; Stars, B-type Keywords: techniques: photometric - stars: emission-line, Be - Hertzsprung-Russell (HR) diagram - open clusters and associations: individual: NGC 663 Description: We present CCD uvby{beta} photometry for stars in the central area of the young open cluster NGC 663. We find that the reddening is highly variable, with values ranging from E(b-y)=0.639{+/-}0.032 in the central part to E(b-y)=0.555{+/-}0.038 in the south-east. The distance modulus is found to be 11.6{+/-}0.1 mag. (2.1 Kpc), and the age log t=7.25{+/-}0.1 years (25+7/-5 Myr). Objects: ------------------------------------------------------------------- RA (2000) DE Designations (File) ------------------------------------------------------------------- 01 46 30 +61 13 00 NGC 663 (table3.txt) ------------------------------------------------------------------- Nomenclature Notes: The cluster star numbering system is adopted from the WEBDA database (http://obswww.unige.ch/webda). Numbers lower than 635 coincide with Wallenquist (1929, Medd. Astr. Obs. Uppsala n. 42) numbering. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table3.txt 117 290 Coordinates and photometry for stars in NGC 663 -------------------------------------------------------------------------------- See also: J/A+AS/119/271 : Be stars uvby{beta} photometry (Fabregat+, 1996) J/A+A/394/479 uvby{beta} photometry of h and chi Per (Capilla+, 2002) Byte-by-byte Description of file: table3.txt -------------------------------------------------------------------------------- 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- 19 F6.3 s RAs Right Ascension J2000 (seconds) 22- 23 I2 deg DEd Declination J2000 (degrees, +) 25- 26 I2 arcmin DEm Declination J2000 (minutes) 28- 32 F5.2 arcsec DEs Declination J2000 (seconds) 37- 42 F6.3 mag Vmag V magnitude 44- 49 F6.3 mag b-y b-y color index 51- 56 F6.3 mag m1 m1 index 58- 63 F6.3 mag c1 c1 index 66- 71 F6.3 mag e_Vmag rms uncertainty on Vmag (1) 73- 78 F6.3 mag e_b-y rms uncertainty on b-y (1) 80- 85 F6.3 mag e_m1 rms uncertainty on m1 (1) 87- 92 F6.3 mag e_c1 rms uncertainty on c1 (1) - 95 I1 --- o_Vmag number of uvby measurements 98-103 F6.3 mag Hbeta beta index (1) 106-111 F6.3 mag e_Hbeta rms uncertainty on Hbeta (1) -114 I1 --- o_Hbeta number of Hbeta measurements -117 I1 --- Member [0,1] Membership (0: nonmember, 1: member) -------------------------------------------------------------------------------- Note (1): 99.999 in any field indicates that no data is available. -------------------------------------------------------------------------------- Author's address: Juan Fabregat ================================================================================ (End) Juan Fabregat 14-March-2005