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J/PASP/110/533 BR photometry of Fornax bright stars (Stetson+ 1998)
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Homogeneous photometry for star clusters and resolved galaxies.
I. A survey of bright stars in the Fornax dwarf spheroidal galaxy.
Stetson P.B., Hesser J.E., Smecker-Hane T.A.
<Publ. Astron. Soc. Pac. 110, 533 (1998)>
=1998PASP..110..533S (SIMBAD/NED BibCode)
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ADC_Keywords: Galaxies, photometry ; Stars, bright ; Stars, late-type
Keywords: Galaxies: Individual: Name: Fornax Dwarf Galaxy - Stars: Evolution
Abstract:
We present accurate photometry on the Johnson B, Kron-Cousins R
photometric system for approximately 100,000 stars in a 1/3deg^2^
field centered on the dwarf spheroidal galaxy in Fornax. We identify
numerous probable short-period variable stars, blue stars that appear
to be the main sequence of a small population with an age of order
108yr, and two distinct types of luminous red star: an extended
sequence of primarily carbon stars and a clump of mostly M giants
slightly more luminous than the giant-branch tip. The spatial
distribution of each of these subpopulations within the Fornax dwarf
galaxy is considered.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 85 161 Coordinates and photometry for bright,
red stars in Fornax
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- SHS98 This paper identification number
5- 7 A3 --- DK Demers & Kunkel (1979PASP...91..761D) name (1)
9- 12 A4 --- WEL Westerlund et al. (1987A&A...178...41W) name (1)
16- 17 I2 h RAh Right ascension (J2000)
19- 20 I2 min RAm Right ascension (J2000)
22- 26 F5.2 s RAs Right ascension (J2000)
28 A1 --- DE- Declination sign
29- 30 I2 deg DEd Declination (J2000)
32- 33 I2 arcmin DEm Declination (J2000)
35- 38 F4.1 arcsec DEs Declination (J2000)
40- 45 F6.3 mag Bmag B magnitude
47- 51 F5.3 mag e_Bmag rms uncertainty on Bmag
53- 58 F6.3 mag Rmag R magnitude
60- 64 F5.3 mag e_Rmag rms uncertainty on Rmag
66- 71 F6.3 mag Vmag V magnitude
73- 77 F5.3 mag B-R B-R colour index
79 I1 --- Note [1-7]? Individual note (2)
81- 85 A5 --- SpType Spectral Type
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Note (1): Carbon stars and S stars may be distinguished from M stars by the
letter "C," "M," or "S" incorporated into the DK or WEL star name.
Note (2): 1: Star 30 in the unpublished list of Blanco & McCarthy; see
Frogel et al. 1982.
2: Member of a close pair of bright red stars.
3: The coordinates given by WEL appear to contain a typographical
error. The star listed here is the one marked in their finding
chart. Its coordinates, precessed back to 1950.0, are
02h37m37.3s, -34{deg}4'; while WEL give 02h37m41.2s, -34{deg}46'33"
4: = WEL 126
5: = WEL 157
6: = WEL 187
7: = WEL 202
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Table 2: Mean locations of stellar population proxies in at least eight
frame pairs
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Sample +DeltaX=North +DeltaY=West rms Radius N
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RR Lyraes +46 +228 657 600
Clump -42 +203 594 7969
Blue -13 +212 521 1457
Red (a) -66 +153 509 41
Red (b) -44 +190 600 85
All -45 +198 582 58310
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Table 3: Mean locations of stellar population proxies in at least one frame pair
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Sample +DeltaX=North +DeltaY=West rms Radius N
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"RR Lyraes" -37 +195 741 5395
Clump -61 +202 756 11396
Blue -27 +179 592 1670
Red (class [a]) -53 +64 595 47
Red (class [b]) -48 +173 736 114
All -59 +194 735 80468
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History: From PASP electronic version
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(End) James Marcout, Patricia Bauer [CDS] 12-Aug-1998