J/A+A/387/479 UBVI photometry of NGC 133 and NGC 1348 (Carraro, 2002)
A photometric study of the two poorly know northern open clusters
NGC 133 and NGC 1348
Carraro G.
<Astron. Astrophys. 387, 479 (2002)>
=2002A&A...387..479C 2002A&A...387..479C
ADC_Keywords: Clusters, open ; Photometry, UBVRI ; Photometry, CCD
Keywords: open clusters and associations: individual: NGC 133, NGC 1348 -
open clusters and associations: general
Abstract:
We present CCD UBVI observations obtained in the field of the
previously unstudied northern open clusters NGC 133 and NGC 1348. We
argue that NGC 133 is a heavily contaminated cluster, for which we
identify 13 candidate members down to V=14.50mag on the basis of the
position in the two-color Diagram. Membership has been checked against
proper motions from Tycho 2, whenever available. The cluster turns out
to have a reddening E(B-V)=0.60±0.10mag, to be 630±150pc distant
from the Sun, and to have an age less than 10Myrs. NGC 1348 is a more
reddened clusters (E(B-V)=0.85±0.15mag) for which we isolate 20
members. The cluster lies at a distance of 1.9±0.5kpc away from the
Sun, and has an age greater than 50Myrs.
Observations were carried out with the AFOSC camera at the 1.82m
Copernico telescope of Cima Ekar (Asiago, Italy), in the photometric
night of December 18, 2001.
Objects:
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RA (2000) DE GLON GLAT Designation(s)
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00 31 12.0 +63 22 00 120.67 +0.58 NGC 133
03 34 10.0 +51 24 46 146.97 -3.70 NGC 1348
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ngc133.dat 83 309 Photometry of NGC 133
ngc1348.dat 83 141 Photometry of NGC 1348
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See also:
J/A+A/300/128 : ESO 96-SC04 and ESO 92-SC18 photometry (Carraro+, 1995)
J/A+A/372/879 : JKBV photometry of NGC 2141 (Carraro+, 2001)
J/A+A/379/136 : UBVRI photometry of 3 young open clusters (Carraro+, 2001)
J/A+A/385/471 : UBVI photometry of NGC 7036 and NGC 7772 (Carraro+, 2002)
J/A+AS/106/573 : NGC4815 BV photometry (Carraro+, 1994)
J/A+AS/114/281 : NGC 7762: a moderate age open cluster (Patat+, 1995)
J/A+AS/121/451 : VI photometry of Berkeley 66 (Guarnieri+ 1997)
Byte-by-byte Description of file: ngc133.dat ngc1348.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number
5- 12 F8.3 pix Xpos X coordinates (1)
14- 21 F8.3 pix Ypos Y coordinates (1)
23- 29 F7.4 mag Vmag ?=99.9999 V band magnitude
31- 36 F6.4 mag e_Vmag ?=99.9990 error in Vmag
38- 44 F7.4 mag B-V ?=99.9999 (B-V) color index
46- 51 F6.4 mag e_B-V ?=99.9990 error in (B-V)
53- 59 F7.4 mag U-B ?=99.9999 (U-B) color index
61- 67 F7.4 mag e_U-B ?=99.9990 error in (U-B)
69- 75 F7.4 mag V-I ?=99.9999 (V-I) color index
77- 83 F7.4 mag e_V-I ?=99.9990 error in (V-I)
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Note (1): The center is in (500.0, 500.0) pixel. The scale is 0.473"/pix.
East is toward negative X, South toward negative Y.
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Acknowledgements: Giovanni Carraro
(End) Patricia Bauer [CDS] 14-May-2002