J/A+A/570/A78 Deep VI photometry of Sgr dIrr (Beccari+, 2014)
The extended structure of the dwarf irregular galaxy Sagittarius.
Beccari G., Bellazzini M., Fraternali F., Battaglia G., Perina S.,
Sollima A., Oosterloo T.A., Testa V., Galleti S.
<Astron. Astrophys. 570, A78 (2014)>
=2014A&A...570A..78B 2014A&A...570A..78B
ADC_Keywords: Galaxies, nearby ; Galaxies, photometry
Keywords: galaxies: dwarf - Local Group - galaxies: ISM
Description:
Photometric catalogue of the dwarf irregular galaxy Sagittarius. The
catalogue is obtained from deep V and I band wide field photometry
from VIMOS at VLT. Only sources having at least six independent
magnitude estimates per filter were included in this catalogue. The
average and the standard error of the mean of the independent measures
obtained from the different images were adopted as the final values of
the instrumental magnitude and of the uncertainty on the relative
photometry. The instrumental v and i magnitudes were transformed into
the Johnson-Kron-Cousins V,I photometric system using more than 70
bright stars (V<22.5) in common with the publicly available HST Wide
Field and Planetary Camera 2 (WFPC2) photometry by Holtzman et al.
(2006ApJS..166..534H 2006ApJS..166..534H). The instrumental coordinates were transformed
into J2000 Equatorial coordinates with 2nd degree polynomials, using
more than 1000 stars in common with the GSC2.2 catalog. Please see
Section 2.2 for details.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
in6.dat 55 12694 LBC deep photometric catalogue of the Sgr dIrr
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See also:
J/A+A/330/453 : Sagittarius Dwarf Galaxy VI photometry (Marconi+, 1998)
J/AJ/119/777 : Sagittarius dIrr BVRI photometry (Lee+, 2004)
J/A+A/513/A62 : Sgr dSph VIMOS photometry & RV (Giuffrida+, 2010)
J/ApJ/708/1290 : A 2MASS view of the Sgr dSph. VI. (Chou+, 2010)
J/AJ/145/163 : Catalog of stars in Sgr dwarf galaxy (Newby+, 2013)
J/MNRAS/431/1995 : Deep uVI photometry of NGC2419 (Beccari+, 2013)
J/A+A/566/A44 : gr photometry of Sextans A & Sextans B (Bellazzini+, 2014)
Byte-by-byte Description of file: in6.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Seq [1/14823] Sequential number (1)
7- 17 F11.7 deg RAdeg Right ascension (J2000)
19- 29 F11.7 deg DEdeg Declination (J2000)
31- 36 F6.3 mag Vmag [15.9/27.6] V magnitude
38- 42 F5.3 mag e_Vmag V magnitude uncertainty (2)
44- 49 F6.3 mag Imag [13.9/29.9] I magnitude
51- 55 F5.3 mag e_Imag I magnitude uncertainty (2)
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Note (1): We adopted cuts in the image quality parameters CHI and SHARP,
provided by DAOPHOTII: only stars with CHI≤2.0 and SHARP within
magnitude-dependent contours traced to include the bulk of stellar objects,
have been retained.
Note (2): Magnitude errors are measured as standard deviation of the mean of
the independent measures.
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Acknowledgements:
Giacomo Beccari, gbeccari(at)eso.org
(End) Giacomo Beccari [ESO], Patricia Vannier [CDS] 01-Oct-2014