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 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:
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RA (2000) DE Designation(s)
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07 00 29.0 -20 34 00 Cl Tombaugh 1 = C 0658-204
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 54 1351 CCD CT1 data of stars in the field of Tombaugh 1
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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
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Bytes Format Units Label Explanations
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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
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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.
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History:
Andres Piatti, andres(at)iafe.uba.ar
(End) Patricia Vannier [CDS] 26-Aug-2005