J/ApJS/190/147 Mid-IR galaxy morphology from S4G (Buta+, 2010)
Mid-infrared galaxy morphology from the Spitzer survey of stellar structure in
galaxies (S4G): the imprint of the De Vaucouleurs revised Hubble-Sandage
classification system at 3.6 µm.
Buta R.J., Sheth K., Regan M., Hinz J.L., Gil De Paz A.,
Menendez-Delmestre K., Munoz-Mateos J.-C., Seibert M., Laurikainen E.,
Salo H., Gadotti D.A., Athanassoula E., Bosma A., Knapen J.H., Ho L.C.,
Madore B.F., Elmegreen D.M., Masters K.L., Comeron S., Aravena M., Kim T.
<Astrophys. J. Suppl. Ser., 190, 147-165 (2010)>
=2010ApJS..190..147B 2010ApJS..190..147B
ADC_Keywords: Morphology ; Galaxies, IR ; Atlases
Keywords: galaxies: bulges - galaxies: dwarf - galaxies: irregular -
galaxies: elliptical and lenticular, cD - galaxies: spiral -
galaxies: structure
Abstract:
Spitzer Space Telescope Infrared Array Camera imaging provides an
opportunity to study all known morphological types of galaxies in the
mid-IR at a depth significantly better than ground-based near-infrared
and optical images. The goal of this study is to examine the imprint
of the de Vaucouleurs classification volume in the 3.6um band, which
is the best Spitzer waveband for galactic stellar mass morphology
owing to its depth and its reddening-free sensitivity mainly to older
stars. For this purpose, we have prepared classification images for
207 galaxies from the Spitzer archive, most of which are formally part
of the Spitzer Survey of Stellar Structure in Galaxies (S4G), a
Spitzer post-cryogenic ("warm") mission Exploration Science Legacy
Program survey of 2331 galaxies closer than 40Mpc. For the purposes of
morphology, the galaxies are interpreted as if the images are blue
light, the historical waveband for classical galaxy classification
studies. We find that 3.6um classifications are well correlated with
blue-light classifications, to the point where the essential features
of many galaxies look very similar in the two very different
wavelength regimes. We present an atlas of all of the 207 galaxies
analyzed here and bring attention to special features or galaxy types,
such as nuclear rings, pseudobulges, flocculent spiral galaxies, I0
galaxies, double-stage and double-variety galaxies, and outer rings,
that are particularly distinctive in the mid-IR.
Description:
The goals of the S4G project are described by Sheth et al. (2010, PASP,
submitted).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 100 207 3.6 micron morphological classifications
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See also:
VII/62 : Morphological Cat. of Gal. (MCG) (Vorontsov-Velyaminov+, 1962-1974)
VII/112 : RC2 Catalogue (de Vaucouleurs+ 1976)
VII/155 : Third Reference Cat. of Bright Galaxies (RC3) (de Vaucouleurs+,
1991)
J/AJ/108/2128 : RC3 corrections and additions (Corwin+ 1994)
J/A+A/361/863 : Galaxies morphology and IR photometry. V. (Gavazzi+, 2000)
J/ApJS/143/73 : Morphology of spiral galaxies (Eskridge+, 2002)
J/AJ/128/163 : Galaxy morphological classification (Lotz+, 2004)
J/AJ/131/143 : Morphology of galaxies (Homeier+, 2006)
J/ApJ/652/1068 : Morphology of cool and warm infrared galaxies (Rahman+, 2006)
J/AJ/134/1508 : Galaxy morphology catalog (van den Berg+, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Galaxy name
13 A1 --- f_Name Flag on Name (1)
15- 17 I3 --- Fig1 Figure 1 plate number
19- 40 A22 --- S4G The S4G mid-IR type (2)
42- 54 A13 --- RC3 The decoded RC3 (Cat. VII/155) blue type
56- 68 A13 --- RSA The RSA (Sandage & Tammann,
1981RSA...C...0000S 1981RSA...C...0000S) blue type
70- 87 A18 --- dVA The dVA (Buta et al., 2007dvag.book.....B 2007dvag.book.....B)
type; mostly blue, some visual
89-100 A12 --- OSU Eskridge et al., 2002, (Cat. J/ApJS/143/73)
OSUBGS H-band type
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Note (1): Flag as follows:
b = PRG indicates polar ring galaxy (see Whitmore et al.,
1990AJ....100.1489W 1990AJ....100.1489W);
c = double-stage: SB(s)cd/S0-;
d = NGC 3804 in RC3 (Cat. VII/155);
e = double-stage: SB(s)m/S0/a;
f = NGC 4517 in RC3 (Cat. VII/155) and RSA (1981RSA...C...0000S 1981RSA...C...0000S);
g = double-stage: SB(rs)m/S0/a;
h = double-stage: SA(rs)ab/S0/a;
i = double-stage: SA(s)b/S0o;
j = disky inner regions only; boxy at larger radii;
k = apparent bar could also be inner disk.
Note (2): Using the precepts and notation of the dVA. A "preceding a
character is equivalent to an underlining of that character (meaning
an emphasis of that characteristic) as in de Vaucouleurs
1963ApJS....8...31D 1963ApJS....8...31D).
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 30-Sep-2010