Access to Astronomical Catalogues

← Click to display the menu
J/MNRAS/389/285  Proper motions and JHK of 24 Berkeley clusters (Tadross, 2008)

A Catalogue of previously unstudied Berkeley clusters. Tadross A.L. <Mon. Not. R. Astron. Soc., 389, 285-291 (2008)> =2008MNRAS.389..285T
ADC_Keywords: Clusters, open ; Positional data ; Proper motions ; Photometry, infrared Keywords: catalogues - surveys - Hertzsprung-Russell (HR) diagram - open clusters and associations: general - open clusters and associations: individual: Berkeley Abstract: The main astrophysical parameters of 24 previously unstudied open clusters of Berkeley catalogue are presented here. JHK near-infrared (Two Micron All Sky Survey, Cat. II/246) photometry and the proper motions astrometry of Naval Observatory Merged Astrometric Dataset (NOMAD, Cat. I/297) are used. The clusters' centres, angular diameters, ages, distances and colour excesses for these clusters are estimated for the first time. Description: The Naval Observatory Merged Astrometric Dataset (NOMAD) contains astrometric and photometric data for over 1 billion stars derived from the Hipparcos, Tycho-2, UCAC2 and USNO-B1.0 catalogues for astrometry and optical photometry, supplemented by Two Micron All Sky Survey (2MASS) near-infrared photometry. For each unique star the 'best' astrometric and photometric data are chosen from the source catalogues and merged into a single dataset (cf. Zacharias et al., 2004, Cat. I/297). Using this data base; compared with the 2MASS of Cutri et al. (2003, Cat. II/246); we could determine the fundamental parameters of 24 (of 96) open clusters of Berkeley, which were never studied so far. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 53 24 The equatorial & galactic positions and the diameters of our investigated clusters, as taken from 'WEBDA' and 'DIAS' catalog.dat 116 90615 Star positions, absolute proper motions and JHK observation
See also: B/ocl : Optically visible open clusters and Candidates (Dias+ 2002-2007) I/297 : NOMAD Catalog (Zacharias+ 2005) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- --- [Berkeley] 10- 12 I3 --- Berk Cluster number 14- 15 I2 h RAh Right ascension (J2000) 17- 18 I2 min RAm Right ascension (J2000) 20- 21 I2 s RAs Right ascension (J2000) 23 A1 --- DE- Declination sign (J2000) 24- 25 I2 deg DEd Declination (J2000) 27- 28 I2 arcmin DEm Declination (J2000) 30- 31 I2 arcsec DEs Declination (J2000) 33- 39 F7.3 deg GLON Galactic longitude 41- 46 F6.3 deg GLAT Galactic latitude 48 I1 arcmin Diam Diameter 50- 53 I4 --- Nstar Number of stars in the cluster with measurements in catalog.dat file
Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 8 A8 --- --- [Berkeley] 10- 12 I3 --- Berk Cluster number 14- 18 I5 --- Star Star sequential number (WEDBA number) 20- 21 I2 h RAh Right ascension (J2000) 23- 24 I2 min RAm Right ascension (J2000) 26- 30 F5.2 s RAs Right ascension (J2000) 32 A1 --- DE- Declination sign (J2000) 33- 34 I2 deg DEd Declination (J2000) 36- 37 I2 arcmin DEm Declination (J2000) 39- 43 F5.2 arcsec DEs Declination (J2000) 45- 50 F6.1 mas/yr pmRA Absolute proper motion along RA 52- 57 F6.1 mas/yr pmDE Absolute proper motion along DE 59- 63 F5.1 mas/yr e_pmRA ?=0.0 rms uncertainty on pmRA 65- 69 F5.1 mas/yr e_pmDE ?=0.0 rms uncertainty on pmDE 71- 76 F6.3 mag Jmag ?=- 2MASS J magnitude 79- 84 F6.3 mag Hmag ?=- 2MASS H magnitude 87- 92 F6.3 mag Kmag ?=- 2MASS K magnitude 95-100 F6.3 mag J-H ?=- J-H colour index 103-108 F6.3 mag H-K ?=- H-K colour index 111-116 F6.3 mag J-K ?=- J-K colour index
History: Copied at
(End) Patricia Vannier [CDS] 14-Jan-2010
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

catalogue service