J/A+A/549/A47 Position and photometry of stars in SDIG (Lianou+, 2013)
The star formation history of the Sculptor Dwarf Irregular galaxy.
Lianou S., Cole A.A.
<Astron. Astrophys. 549, A47 (2013)>
=2013A&A...549A..47L 2013A&A...549A..47L
ADC_Keywords: Galaxies, photometry ; Photometry, HST
Keywords: galaxies: dwarf - galaxies: star formation -
galaxies: groups: individual: Sculptor dwarf irregular galaxy -
galaxies: groups: individual: Sculptor group -
galaxies: stellar content -
Abstract:
We study the resolved stellar populations and derive the star
formation history of the Sculptor dwarf irregular galaxy (SDIG), a
gas-rich dwarf galaxy member of the NGC 7793 subgroup in the Sculptor
group of galaxies.
We constructed a colour - magnitude diagram (CMD) using archival
observations from the Hubble Space Telescope/Advanced Camera for
Surveys in order to examine the stellar content of SDIG, as well as
the spatial distribution of stars selected within different stellar
evolutionary phases. We derived the star formation history of SDIG
using a maximum-likelihood fit to the CMD.
Description:
Position and photometry for the resolved stars in the Sculptor Dwarf
Irregular galaxy. The catalogue includes only those stars in which all
selection criteria described in the companion paper were applied.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
sdig.dat 95 11363 Position and photometry of stars in Sculptor
Dwarf Irregular galaxy (SDIG)
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See also:
J/A+AS/112/407 : Variable Stars in the Sculptor dwarf galaxy (Kaluzny+, 1995)
J/AJ/110/2747 : Stars in Sculptor dwarf spheroidal galaxy (Schweitzer+ 1995)
J/AJ/130/1065 : Sculptor dwarf spheroidal galaxy members (Coleman+, 2007)
J/AJ/135/1993 : JHK magnitudes of Sculptor dSph RR Lyrae (Pietrzynski+ 2008)
J/ApJ/705/328 : Abundance measurements in Sculptor dSph (Kirby+, 2009)
J/MNRAS/363/734 : Sculptor dSph variables metal abundances (Clementini+, 2005)
J/MNRAS/414/3492 : JHKs photometry of Sculptor dSph galaxy (Menzies+, 2011)
J/AJ/131/375 : Sculptor dSph giants photometry & RV (Westfall+, 2012)
Byte-by-byte Description of file: sdig.dat
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Bytes Format Units Label Explanations
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1- 7 F7.5 deg RAdeg Right Ascension J2000 (degrees)
12- 19 F8.4 deg DEdeg Declination J2000 (degrees)
24- 28 F5.2 mag F606W HST/ACS F606W magnitude
33- 37 F5.2 mag Vmag V magnitude (Cousins)
42- 46 F5.3 mag e_F606W F606W magnitude error (1)
51- 55 F5.2 mag F814W HST/ACS F814W magnitude (ACS filter system)
60- 64 F5.2 mag Imag I magnitude (Cousins)
69- 73 F5.3 mag e_F814W F814W magnitude error (1)
78- 84 F7.2 pix Xcoo X-coordinates in pixels (2)
89- 95 F7.2 pix Ycoo Y-coordinates in pixels (2)
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Note (1): The photometric uncertainties are derived using the artificial
star tests.
Note (2): Position of stars in pixels, where the fits file
j8mq01020_drz.fits is used as the reference image.
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Acknowledgements:
Sophia Lianou, sophia.thl(at)gmail.com
(End) S. Lianou [IAASARS-NOA], Patricia Vannier [CDS] 06-Dec-2012