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J/A+A/421/991       CT1 photometry in Tombaugh 1             (Piatti+, 2004)

Improvements on the fundamental parameters of the open cluster Tombaugh 1 through Washington system photometry. Piatti A.E., Claria J.J., Ahumada A.V. <Astron. Astrophys., 421, 991-999 (2004)> =2004A&A...421..991P
ADC_Keywords: Clusters, open ; Photometry, CMT1T2V ; Photometry, CCD Keywords: Galaxy: open clusters and associations: individual: Tombaugh 1 - Galaxy: general - techniques: photometric Abstract: We present CCD photometry in the Washington system C and T1 passbands down to T1∼18.5mag in the field of Tombaugh 1, a little studied open cluster located in the third Galactic quadrant. We measured T1 magnitudes and C-T1 colours for a total of 1351 stars distributed throughout an area of 13.6'x13.6'. Description: Images of the cluster field were obtained using the 2048x2048 pixel Tektronix 2K #3 CCD at the prime focus of the Cerro Tololo Inter-American Observatory (CTIO) 0.9-m telescope on the night of 1997 December 23. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 07 00 29.0 -20 34 00 Cl Tombaugh 1 = C 0658-204 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 54 1351 CCD CT1 data of stars in the field of Tombaugh 1
See also: J/MNRAS/346/390 : VI and CMT1 photometry in NGC 2627 (Piatti+, 2003) J/A+A/418/979 : VI and CT1 photometry in NGC 2324 field (Piatti+, 2004) J/MNRAS/349/641 : VIc and CT1 photometry in Trumpler 5 (Piatti+, 2004) J/MNRAS/358/1215 : CT1 photometry of 10 SMC clusters (Piatti+, 2005) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
3- 6 I4 --- Star Sequential number, Cl* Tombaugh 1 PCA NNNN in Simbad 8- 15 F8.3 pix Xpos X position (1) 17- 24 F8.3 pix Ypos Y position (1) 27- 32 F6.3 mag T1mag Washington T1 magnitude 34- 38 F5.3 mag e_T1mag rms uncertainty on T1mag 40- 45 F6.3 mag C-T1 Washington C-T1 colour index 47- 51 F5.3 mag e_C-T1 rms uncertainty on C-T1 54 I1 --- o_T1mag Number of observations
Note (1): The coordinates for the cluster centre are (Xc, Yc) = (1580±30, 1400±30) pixels 1pix=0.40". North is up and East is to the left.
History: Andres Piatti, andres(at)iafe.uba.ar
(End) Patricia Vannier [CDS] 26-Aug-2005
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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