J/AJ/116/2341 UBVRI photometry in Sextans A (Van Dyk+ 1998)
Recent star formation in Sextans A.
Van Dyk S.D., Puche D., Wong T.
<Astron. J. 116, 2341 (1998)>
=1998AJ....116.2341V 1998AJ....116.2341V
ADC_Keywords: Galaxies, nearby ; Stars, luminous ; Photometry, UBVRI
Keywords: galaxies: Local Group - galaxies: individual (Sextans A, DDO 75) -
galaxies: dwarf - galaxies: photometry - galaxies: stellar content -
galaxies: evolution
Description:
We investigate the relationship between the spatial distributions of
stellar populations and of neutral and ionized gas in the Local Group
dwarf irregular galaxy Sextans A. We have resolved various populations
of stars via deep UBV(RI)_C imaging over an area with diameter 5.3
arcmin. We arrive at 2525 stars detected in V and at least one other
band. We provide here the magnitudes, colors, and absolute positions
for the stars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
sextansa.dat 116 2525 UBV(RI)c photometry of 2525 stars
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Byte-by-byte Description of file: sextansa.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- StarID Star identification
7- 13 F7.2 pix Xpos X Pixel number
15- 21 F7.2 pix Ypos Y Pixel number
23- 24 I2 h RAh Right Ascension (J2000)
26- 27 I2 min RAm Right Ascension (J2000)
29- 33 F5.2 s RAs Right Ascension (J2000)
35 A1 --- DE- Declination sign (J2000)
36- 37 I2 deg DEd Declination (J2000)
39- 40 I2 arcmin DEm Declination (J2000)
42- 45 F4.1 arcsec DEs Declination (J2000)
47- 52 F6.3 mag Vmag ?=99.999 V magnitude
54- 59 F6.3 mag e_Vmag ?=99.999 Error in V magnitude
61- 66 F6.3 mag U-B ?=99.999 U-B color
68- 73 F6.3 mag e_U-B ?=99.999 Error in U-B color
75- 80 F6.3 mag B-V ?=99.999 B-V color
82- 87 F6.3 mag e_B-V ?=99.999 Error in B-V color
89- 94 F6.3 mag V-R ?=99.999 V-R color
96-101 F6.3 mag e_V-R ?=99.999 Error in V-R color
103-108 F6.3 mag R-I ?=99.999 R-I color
110-115 F6.3 mag e_R-I ?=99.999 Error in R-I color
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Acknowledgements: Schuyler Van Dyk
(End) Schuyler Van Dyk [IPAC] 30-Oct-1998