J/AJ/130/1065 Members of the Sculptor dwarf spheroidal galaxy (Coleman+, 2005)
The absence of extratidal structure in the Sculptor dwarf spheroidal galaxy.
Coleman M.G., Da Costa G.S., Bland-hawthorn J.
<Astron. J., 130, 1065-1082 (2005)>
=2005AJ....130.1065C 2005AJ....130.1065C
ADC_Keywords: Photometry, VRI ; Radial velocities ; Abundances, [Fe/H]
Keywords: galaxies: dwarf - galaxies: individual (Sculptor) -
galaxies: interactions - galaxies: photometry -
galaxies: stellar content - Galaxy: halo - Local Group
Abstract:
The results of a wide-field survey of the Sculptor dwarf spheroidal
galaxy are presented. Our aims were to obtain an accurate map of the
outer structure of Sculptor and to determine the level of interaction
between this system and the Galaxy. Photometry was obtained in two
colors down to the magnitude limits of V=20 and I=19, covering a
3.1°x3.1° area centered on Sculptor.
Description:
Images of the Sculptor region were obtained at the Siding Spring
Observatory 1m telescope equipped with the Wide Field Imager (WFI).
Sixteen fields were observed in two filters (V and I), thereby
covering a 3.1°x3.1° area on the sky using a 4x4 mosaic of
WFI fields. The 2dF instrument at the prime focus of the
Anglo-Australian Telescope allows the simultaneous spectroscopy of up
to 400 targets over a field of view 2° in diameter.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 81 152 Sculptor members
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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)
Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Star Star identification
11- 12 I2 h RAh Hour of Right Ascension (J2000)
14- 15 I2 min RAm Minute of Right Ascension (J2000)
17- 21 F5.2 s RAs Second of Right Ascension (J2000)
23 A1 --- DE- Sign of the Declination (J2000)
24- 25 I2 deg DEd Degree of Declination (J2000)
27- 28 I2 arcmin DEm Arcminute of Declination (J2000)
30- 33 F4.1 arcsec DEs Arcsecond of Declination (J2000)
35- 40 F6.3 mag Vmag The V band magnitude
42- 46 F5.3 mag e_Vmag Uncertainty in Vmag (1)
48- 52 F5.3 mag V-I The (V-I) color index
54- 58 F5.3 mag e_V-I Uncertainty in V-I (1)
60- 64 F5.1 km/s RV Radial velocity
66- 69 F4.1 km/s e_RV Uncertainty in RV
71- 75 F5.2 [Sun] [Fe/H] Log of the Fe/H number abundance
77- 80 F4.2 [Sun] e_[Fe/H] Uncertainty in [Fe/H]
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Note (1): Relative only, and do not include those from the photometric
calibration.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 14-Nov-2005