J/ApJS/217/32 S4G galaxy morphologies in the CVRHS system (Buta+, 2015)
A classical morphological analysis of galaxies in the Spitzer Survey of Stellar
Structure in Galaxies (S4G).
Buta R.J., Sheth K., Athanassoula E., Bosma A., Knapen J.H.,
Laurikainen E., Salo H., Elmegreen D., Ho L.C., Zaritsky D., Courtois H.,
Hinz J.L., Munoz-Mateos J.-C., Kim T., Regan M.W., Gadotti D.A.,
Gil de Paz A., Laine J., Menendez-Delmestre K., Comeron S.,
Erroz-Ferrer S., Seibert M., Mizusawa T., Holwerda B., Madore B.F.
<Astrophys. J. Suppl. Ser., 217, 32 (2015)>
=2015ApJS..217...32B 2015ApJS..217...32B
ADC_Keywords: Galaxies, IR ; Morphology ; Surveys
Keywords: atlases; galaxies: elliptical and lenticular; galaxies: irregular;
galaxies: spiral; galaxies: structure
Abstract:
The Spitzer Survey of Stellar Structure in Galaxies (S4G) is the
largest available database of deep, homogeneous middle-infrared
(mid-IR) images of galaxies of all types. The survey, which includes
2352 nearby galaxies, reveals galaxy morphology only minimally
affected by interstellar extinction. This paper presents an atlas and
classifications of S4G galaxies in the Comprehensive de Vaucouleurs
revised Hubble-Sandage (CVRHS) system. The CVRHS system follows the
precepts of classical de Vaucouleurs morphology, modified to include
recognition of other features such as inner, outer, and nuclear
lenses, nuclear rings, bars, and disks, spheroidal galaxies, X
patterns and box/peanut structures, OLR subclass outer rings and
pseudorings, bar ansae and barlenses, parallel sequence late-types,
thick disks, and embedded disks in 3D early-type systems. We show that
our CVRHS classifications are internally consistent, and that nearly
half of the S4G sample consists of extreme late-type systems (mostly
bulgeless, pure disk galaxies) in the range Scd-Im. The most common
family classification for mid-IR types S0/a to Sc is SA while that for
types Scd to Sm is SB. The bars in these two type domains are very
different in mid-IR structure and morphology. This paper examines the
bar, ring, and type classification fractions in the sample, and also
includes several montages of images highlighting the various kinds of
"stellar structures" seen in mid-IR galaxy morphology.
Description:
Our final list has 2412 galaxies, 60 more than the extended S4G
sample. All of the additional galaxies are companions or in the same
area as an S4G sample galaxy.
Of the selected galaxies, ∼600 had already been observed by Spitzer
for other projects, and thus images were already available. New data
were collected for the ∼1750 remaining sample galaxies.
The CVRHS system is a modified version of the de Vaucouleurs
(1959HDP....53..275D 1959HDP....53..275D) revised Hubble-Sandage (VRHS) system that is
described in the de Vaucouleurs Atlas of Galaxies (dVA, Buta et al.
2007dvag.book.....B 2007dvag.book.....B).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 544 147 Explanation of CVRHS symbols
table2.dat 119 2412 Phase 1 and 2 CVRHS classifications for 2412 S4G
galaxies
table6.dat 183 2412 Mean CVRHS classifications for 2412 S4G galaxies
table9.dat 12 1114 Arm classifications for 1114 S4G galaxies
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See also:
VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003)
J/MNRAS/444/3015 : Morphologies of S4G galaxies (Laine+, 2014)
J/A+A/569/A91 : Optical imaging for S4G (Knapen+, 2014)
J/MNRAS/441/1992 : Galaxies with disc breaks in S4G and NIRS0S (Laine+, 2014)
J/AJ/147/134 : Tully-Fisher relation for S4G galaxies (Zaritsky+, 2014)
J/A+A/562/A121 : Atlas of Resonance Rings as Known In S4G (Comeron+ 2014)
J/ApJ/772/135 : 3.6um surface brightness from S4G (Zaritsky+, 2013)
J/ApJ/771/59 : S4G face-on galaxy surface brightness (Munoz-Mateos+, 2013)
J/A+A/555/L4 : Inner rings in disc galaxies from UV+Ha (Comeron, 2013)
J/MNRAS/416/1680 : ATLAS3D project. VII. (Cappellari+, 2011)
J/A+A/532/A74 : EFIGI catalog of 4458 nearby galaxies (de Lapparent+, 2011)
J/PASP/122/1397 : S4G catalog (Sheth+, 2010)
J/ApJS/190/147 : Mid-IR galaxy morphology from S4G (Buta+, 2010)
J/MNRAS/405/1089 : Photometric scaling for L/S0 galaxies (Laurikainen+ 2010)
J/ApJS/182/216 : Surface photometry of Virgo ellipticals (Kormendy+, 2009)
J/ApJS/181/572 : Collisional ring galaxies atlas (Madore+, 2009)
J/ApJS/169/213 : ACS Fornax Cluster Survey. I. (Jordan+, 2007)
J/ApJ/659/1176 : Study of bars in 180 spiral galaxies (Marinova+, 2007)
J/AJ/132/926 : Galaxies in the Hubble Ultra Deep Field (Coe+, 2006)
J/ApJS/143/73 : Morphology of spiral galaxies (Eskridge+, 2002)
J/AJ/121/225 : Photometry & kinematics of NGC 1433 & NGC 6300 (Buta+, 2001)
J/A+AS/145/405 : Box- and peanut-shaped bulges. I. (Luetticke+, 2000)
J/AJ/112/1335 : Hubble Deep Field observations (Williams+ 1996)
J/ApJS/96/39 : Catalog of Southern Ringed Galaxies (Buta+, 1995)
J/AJ/90/1681 : The Virgo Cluster Catalog (VCC) (Binggeli+, 1985)
http://irsa.ipac.caltech.edu/data/SPITZER/S4G/ : S4G at IPAC
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Cat Category (1)
15- 38 A24 --- Symbol Symbol
40-544 A505 --- Text Description of symbol
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Note (1): Symbols belong to the following groups:
General terms = General Terms
Stage = Stage
Elliptical = Elliptical galaxies
S0 gal. = S0 galaxies
Spiral & Irr. = Spiral and Irregular Galaxies
dw. and Sph. = Dwarf and Spheroidal Galaxies
Family = Family
Std in. var = Standard Inner Varieties
Spe in. var = Special Inner Varieties
Nuc. var = Nuclear Varieties
Combined var = Combined Inner and Nuclear Varieties
Std out. var = Standard Outer Varieties
Spe out. var = Special Outer Varieties
OLR morph. = "Outer Lindblad Resonance" Morphologies
CR = Cataclysmic Rings
Edge-on gal. = Edge-on Galaxies (see table 6 for more combinations)
Other = Other Special Features or Categories
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAhInt Beginning Hour of Right Ascension interval
4- 13 A10 --- Name Galaxy identifier (G1)
15 A1 --- f_Name [*] Additional galaxy (G2)
17- 61 A45 --- P1T Phase 1 type (1)
63-107 A45 --- P2T Phase 2 type (1)
109-119 A11 --- Figure Figure number (2)
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Note (1): See Table 1 for a summary of the meaning of CVRHS notations, and the
notes to Table 6 for galaxies which have a different name in RC3.
Note (2): Figure numbers are either for paper I (I.1.nnn) (Buta et al. 2010,
J/ApJS/190/147) or this paper (II.1.nnnn).
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAhInt Beginning Hour of Right Ascension interval
4- 13 A10 --- Name Galaxy identifier (G1)
15 A1 --- f_Name [*] Additional galaxy (G2)
17- 20 F4.1 --- [-5/11]? Unweighted average numerical T index (3)
22- 25 F4.2 --- [0/1]? Unweighted average numerical F index (3)
27- 83 A57 --- <Type> Unweighted average classification type (3)
85-183 A99 --- Notes Additional notes (Arm classifications in table9)
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Note (3): See Tables 3 and 4 for the numerical codes and ranges used for
combining the Phase 1 and 2 classifications.
The Numerical codes are (Table 3):
* Stages: = T
cE = -6
E = -5
E+ = -4
S0- = -3
S0o = -2
S0+ = -1
S0/a = 0
Sa = 1
Sab = 2
Sb = 3
Sbc = 4
Sc = 5
Scd = 6
Sd = 7
Sdm = 8
Sm = 9
Im = 10
dE,dS0,Sph = 11
* Families: = F
SA = 0.00
SAB = 0.25
SAB = 0.50
SAB = 0.75
SB = 1.00
* Inner and Outer Varieties: = IV,OV
(s), (no outer feature) = 0.00
(rs) = 0.25
(rs), (R') = 0.50
(rS) = 0.75
(r), (R) = 1.00
(rl), (RL) = 1.25
(rl), (RL) = 1.50
(rl), (L) = 1.75
(l), (L) = 2.00
The range for combining catalogs are (Table 4):
(L) = 1.875 ≤ OV ≤ 2.000
(RL) = 1.625 ≤ OV < 1.875
(RL) = 1.375 ≤ OV < 1.625
(RL) = 1.125 ≤ OV < 1.375
(R) = 0.750 ≤ OV < 1.125
(R') = 0.250 ≤ OV < 0.750
No outer feature = 0.000 ≤ OV < 0.250
SA,IA = 0.00 ≤ F < 0.15
SAB,IAB = 0.15 ≤ F < 0.35
SAB,IAB = 0.35 ≤ F < 0.65
SAB,IAB = 0.65 ≤ F < 0.85
SB,IB = 0.85 ≤ F ≤ 1.00
(s) = 0.00 ≤ IV < 0.15
(rs) = 0.15 ≤ IV < 0.35
(rs) = 0.35 ≤ IV < 0.65
(rS) = 0.65 < IV ≤ 0.85
(r) = 0.85 < IV ≤ 1.15
(l) = 1.85 ≤ IV ≤ 2.00
(rl) = 1.65 ≤ IV < 1.85
(rl) = 1.35 ≤ IV < 1.65
(rl) = 1.15 ≤ IV < 1.35
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Galaxy identifier
12 A1 --- AC [FGM] Arm class (4)
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Note (4): Arm classes, due to D. Elmegreen:
F = flocculent,
M = multi-armed,
G = grand design;
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Global Notes:
Note (G1): The galaxies are listed in order of J2000 right ascension.
Note (G2): Galaxies with an asterisk after the name are on S4G frames but
are not part of the formal sample. Some of these are included in the
atlas illustrations. If they are not, the name of the galaxy image
where they can be found (in the publicly available database) is given.
History:
From electronic version of the journal
References:
Buta et al. Paper I. 2010ApJS..190..147B 2010ApJS..190..147B Cat. J/ApJS/190/147
Sheth et al. S4G 2010PASP..122.1397S 2010PASP..122.1397S Cat. J/PASP/122/1397
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 12-May-2015