Access to Astronomical Catalogues

← Click to display the menu
J/AJ/114/1471                                 Fornax Globular 3 (Smith+ 1997)

Fornax globular cluster 3: new color-magnitude diagrams for cluster and surrounding field Smith E.O., Michael R.R., Neill J.D. <Astron. J. 114, 1471 (1997)> =1997AJ....114.1471S
ADC_Keywords: Clusters, globular ; Photometry, UBV Abstract: We present new B-V color-magnitude diagrams for Fornax globular cluster 3 and the surrounding field where our data reach one magnitude below the horizontal branch which is at VHB=21.28. After subtracting the field stars from the cluster CMD, we found no evidence for an intrinsic width of the red giant branch because the scatter is only slightly wider than the photometric errors. We determine that there is an intrinsic width to the horizontal branch because the scatter is larger than the photometric errors. After comparing our data with earlier photometry, we find 7 possible variable stars, both within and outside the instability strip, out of a total of 74 horizontal branch stars. We calculate the horizontal branch type of cluster 3 to be of intermediate color, -0.110±0.104, which when compared to Fornax cluster 1, having similar metallicity, suggests a second-parameter pair. Five carbon star candidates identified by Jorgensen & Jimenez (1997, Cat. J/A+A/317/54) are marked in the field-subtracted color-magnitude diagram. (c) 1997 American Astronomical Society. Objects: ---------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------- 02 39.8 -34 16 Cluster 3 in Fornax ---------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 42 2698 *Fornax cluster 3 photometry table3.tex 56 2724 AASTeX version of table3.dat table3.ps 72 4182 PostScript version
Note on table3.dat: the numbering in the first column of table 4 disagrees with the ID of table 3.
See also: J/A+A/317/54 : Fornax cluster 1 and 3 photometry (Jorgensen+ 1997) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 4 I4 --- ID Identification number (2) 6- 11 F6.1 pix Xpos X pixel coordinate (1) 13- 18 F6.1 pix Ypos Y pixel coordinate (1) 20- 24 F5.2 mag Vmag V magnitude 27- 30 F4.2 mag e_Vmag V error 32- 36 F5.2 mag B-V B-V color 39- 42 F4.2 mag e_B-V B-V error
Note (1): North at the top and east to the left. The image is 233" on a side and the center of the cluster in pixels is at the position of (X, Y)=(675, 1214), RA=02h 37m 44s, DE=-34deg 28' 18". 1 pix = 0.43"Note (2): This number disagrees with the first column of Table 4. Note (2): This number disagrees with the first column of Table 4.
Origin: AAS CD-ROM series, Volume 9, 1997 Lee Brotzman [ADS] 04-Nov-1997
(End) [CDS] 05-Feb-1998
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

© UDS/CNRS

Contact