J/A+A/437/457 NGC 2548 uvbyH{beta} and proper motions (Balaguer-Nunez+, 2005) ================================================================================ uvby-H{beta} CCD photometry and membership segregation of the open cluster NGC 2548; Gaps in the Main Sequence of open clusters. Balaguer-Nunez L., Jordi C., Galadi-Enriquez D. =2005A&A...437..457B ================================================================================ ADC_Keywords: Clusters, open ; Photometry, uvby, beta ; Photometry, CCD ; Proper motions Keywords: Galaxy: open clusters and associations: individual: NGC 2548 - techniques: photometry - astrometry - methods: observational - methods: data analysis Abstract: Deep CCD photometry in the uvby-H{beta} intermediate-band system is presented for the cluster NGC 2548 (M 48). A complete membership analysis based on astrometric and photometric criteria is applied. Description: table3.dat contains the catalogue of accurate uvby-H{beta} and J2000 coordinates for 4806 stars in an area of 34'x34' around NGC 2548. We mark the selection of probable members of NGC 2548, combining the photometric study with an astrometric analysis. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table3.dat 136 4806 Stromgren photometry of stars in NGC 2548 area table4.dat 74 4806 Cross-identification of stars table5.dat 94 501 Non-Parametric Astrometric Probability -------------------------------------------------------------------------------- See also: J/A+A/381/464 : Proper motions and membership in NGC 2548 (Wu+, 2002) I/252 : The USNO-A2.0 Catalogue (Monet+ 1998) I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) I/259 : The Tycho-2 Catalogue (Hog+ 2000) htpp://obswww.unige.ch/WEBDA : WEBDA DataBase Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 I5 --- Seq Sequential identification number 7- 8 I2 h RAh Right ascension (J2000) 10- 11 I2 min RAm Right ascension (J2000) 13- 18 F6.3 s RAs Right ascension (J2000) 20 A1 --- DE- Declination sign (J2000) 21 I1 deg DEd Declination (J2000) 23- 24 I2 arcmin DEm Declination (J2000) 26- 30 F5.2 arcsec DEs Declination (J2000) 31- 39 F9.3 arcmin xpos x-frame coordinate in arcmin 40- 48 F9.3 arcmin ypos y-frame coordinate in arcmin 49- 57 F9.3 mag b-y ?=99.990 b-y color index 58- 65 F8.4 mag e_b-y Error in b-y 66- 74 F9.3 mag Vmag ?=99.990 Johnson V magnitude 75- 82 F8.4 mag e_Vmag Error in Vmag 83- 91 F9.3 mag m1 ?=99.990 m1 color index 92- 99 F8.4 mag e_m1 Error in m1 100-108 F9.3 mag c1 ?=99.990 c1 color index 109-116 F8.4 mag e_c1 Error in c1 117-125 F9.3 mag Hb ?=99.990 H{beta} color index 126-133 F8.4 mag e_Hb Error in Hbeta 134-136 A3 --- Mem Membership label -------------------------------------------------------------------------------- Byte-by-byte Description of file: table4.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 I5 --- Seq Sequential identification number 7- 8 I2 h RAh Right ascension (J2000) 10- 11 I2 min RAm Right ascension (J2000) 13- 18 F6.3 s RAs Right ascension (J2000) 20 A1 --- DE- Declination sign (J2000) 21 I1 deg DEd Declination (J2000) 23- 24 I2 arcmin DEm Declination (J2000) 26- 30 F5.2 arcsec DEs Declination (J2000) 32- 36 I5 --- WTB ?=0 Astrometry from Paper I, , Cl* NGC 2548 WTB NNN 38- 42 I5 --- Webda ?=0 Webda identification number 43- 48 I6 --- HIP ?=0 Hipparcos () identification number 50- 54 I5 --- TYC1 ?=0 TYC1 () identification number 55- 59 I5 --- TYC2 ?=0 TYC2 () identification number 60- 74 A15 --- USNO-A2.0 USNO-A2.0 () identification number -------------------------------------------------------------------------------- Byte-by-byte Description of file: table5.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 I5 --- WTB Sequential identification number (from Paper I, Wu et al., Cat. ) 6- 13 F8.3 arcmin xpos x-frame coordinate in arcmin 14- 21 F8.3 arcmin ypos y-frame coordinate in arcmin 24- 25 I2 h RAh Right ascension (J2000) 27- 28 I2 min RAm Right ascension (J2000) 30- 36 F7.4 s RAs Right ascension (J2000) 39 A1 --- DE- Declination sign (J2000) 40 I1 deg DEd Declination (J2000) 42- 43 I2 arcmin DEm Declination (J2000) 45- 50 F6.3 arcsec DEs Declination (J2000) 51- 59 F9.3 mas/yr pmRA Proper motion in alpha 60- 65 F6.3 mas/yr e_pmRA error in pmRA 66- 74 F9.3 mas/yr pmDE Proper motion in delta 75- 80 F6.3 mas/yr e_pmDE error in pmDE 81- 86 F6.2 --- PmembP Parametric membership probability (from Paper I, Wu et al., Cat. ) 87- 92 F6.2 --- PmemnNP Non-parametric membership probability -------------------------------------------------------------------------------- Acknowledgements: Lola Balaguer-Nunnez, lbalague(at)am.ub.es History: * 21-Apr-2005: Original version * 12-Jul-2005: 2 couples of stars corrected in table4: 372+378, and 1274+1285 ================================================================================ (End) L. Balaguer-Nunnez [Univ. Barcelona], Patricia Vannier [CDS] 21-Apr-2005