J/ApJ/631/85 Galaxy morphologies in the Hubble UDF (Elmegreen+, 2005)
Galaxy morphologies in the Hubble Ultra Deep Field: dominance of linear
structures at the detection limit.
Elmegreen D.M., Elmegreen B.G., Rubin D.S., Schaffer M.A.
<Astrophys. J., 631, 85-100 (2005)>
=2005ApJ...631...85E 2005ApJ...631...85E
ADC_Keywords: Galaxies, photometry ; Morphology ; Photometry, HST
Keywords: galaxies: evolution - galaxies: formation - galaxies: high-redshift -
galaxies: structure
Abstract:
Galaxies in the Hubble Ultra Deep Field (UDF) larger than 10 pixels
(0.3") have been classified according to morphology, and their
photometric properties are presented. There are 269 spiral, 100
elliptical, 114 chain, 126 double-clump, 97 tadpole, and 178
clump-cluster galaxies.
Description:
UDF images were obtained with the Hubble Space Telescope Advanced
Camera for Surveys (HST ACS) by S. Beckwith and coworkers in 2004 and
are available on the Space Telescope Science Institute (STScI)
archive. The images are 10500x10500pix with a scale of 0.03"/pix
(315"x315") in four filters: F435W (B band; 134880s exposure), F606W
(V band; 135320s), F775W (i band; 347110s), and F850LP (z band_;
346620s).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea.dat 8 769 Galaxies with a single UDF number
tableb.dat 57 34 Galaxies with multiple UDF numbers
tablec.dat 82 81 Galaxies with no UDF numbers
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See also:
II/258 : Hubble Ultra Deep Field Catalog (UDF) (STScI, 2004)
J/ApJ/612/L93 : Candidates of z∼5.5-7 galaxies in the HST-UDF (Yan+, 2004)
Byte-by-byte Description of file: tablea.dat
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Bytes Format Units Label Explanations
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1 I1 --- Num [1-6] Table number (G1)
3- 6 I4 --- UDF UDF number (1)
7 A1 --- m_UDF [AB] Multiplicity index on UDF
8 A1 --- f_UDF [*] Indicates a barred galaxy
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Note (1): We do not repeat the colors and magnitudes of the single sources
because these measurements are in the UDF catalog; they are the
same as what we measured independently to within 0.1mag (which
is the same as the measuring error for UDF magnitudes).
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Byte-by-byte Description of file: tableb.dat
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Bytes Format Units Label Explanations
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1 I1 --- Num [1-6] Table number (G1)
3- 6 I4 --- UDF1 UDF number
8- 11 I4 --- UDF2 UDF number
13- 16 I4 --- UDF3 ? UDF number
18- 21 I4 --- UDF4 ? UDF number
23- 26 I4 --- UDF5 ? UDF number
28- 32 F5.2 mag/arcsec2 SuBr Combined average surface brightness in i775
34- 38 F5.2 mag imag Apparent i magnitude in F775W filter
40- 44 F5.2 mag B-V B-V color index
46- 51 F6.3 mag V-i V-i color index
53- 57 F5.2 mag i-z i-z color index
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Byte-by-byte Description of file: tablec.dat
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Bytes Format Units Label Explanations
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1 I1 --- Num [1-6] Table number (G1)
3- 6 A4 --- Name Source name
8 A1 --- f_Name [*] Indicates a barred galaxy
10- 16 F7.2 pix Xpos X position
18- 23 F6.1 pix Ypos Y position
25 I1 h RAh Hour of Right Ascension (J2000.0)
27- 28 I2 min RAm Minute of Right Ascension (J2000.0)
30- 36 F7.4 s RAs Second of Right Ascension (J2000.0)
38 A1 --- DE- Sign of the Declination (J2000.0)
39- 40 I2 deg DEd Degree of Declination (J2000.0)
42- 43 I2 arcmin DEm Arcminute of Declination (J2000.0)
45- 50 F6.3 arcsec DEs Arcsecond of Declination (J2000.0)
52- 56 F5.2 mag/arcsec SuBr Combined average surface brightness in i775
58- 62 F5.2 mag imag Apparent i magnitude (F775 filter)
64- 69 F6.3 mag B-V B-V color index
71- 75 F5.2 mag V-i V-i color index
77- 82 F6.3 mag i-z i-z color index
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Global Notes:
Note (G1): Table number, defined as follows:
1 = Chain galaxies
(Linear objects dominated by several giant clumps and having no
exponential light profiles or central red bulges.)
2 = Clump-cluster galaxies
(Oval or circular objects resembling chain galaxies in their dominance
by several giant clumps and having no exponential profiles or bulges.)
3 = Double galaxies
(Systems dominated by two similar clumps with no exponential profile or
bulge.)
4 = Tadpole galaxies
(Systems dominated by a single clump that is off-center from, or at the
end of, a more diffuse linear emission.)
5 = Spiral galaxies
(Galaxies with exponential-like disks, evident spiral structure if they
have low inclination, and usually a bulge or a nucleus.)
6 = Elliptical galaxies
(Centrally concentrated oval galaxies with no obvious spiral structure.)
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History:
From electronic version of the journal
(End) Marianne Brouty [CDS] 18-May-2006