J/MNRAS/488/2175 CVRHS classifications for 719 AMIGA galaxies (Buta+ 2019)
A comprehensive examination of the optical morphologies of 719 isolated galaxies
in the AMIGA Sample.
Buta R., Verdes-Montenegro L., Damas-Segovia A., Jones M., Blasco J.,
Fernandez-Lorenzo M., Sanchez S., Garrido J., Ramirez-Moreta P., Sulentic J.
<Mon. Not. R. Astron. Soc. 488, 2175-2189 (2019)>
=2019MNRAS.488.2175B 2019MNRAS.488.2175B (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Morphology
Keywords: galaxies: elliptical and lenticular, cD - galaxies: evolution -
galaxies: spiral - galaxies: star formation - galaxies: statistics -
galaxies: structure
Abstract:
Using images from Sloan Digital Sky Survey Data Release 8, we have
re-examined the morphology of 719 galaxies from the Analysis of the
interstellar Medium in Isolated GAlaxies (AMIGA) project, a sample
consisting of the most isolated galaxies that have yet been
identified. The goal is to further improve the classifications of
these galaxies by examining them in the context of the Comprehensive
de Vaucouleurs revised Hubble-Sandage (CVRHS) system, which includes
recognition of features that go beyond the original de Vaucouleurs
point of view. Our results confirm previous findings that isolated
galaxies are found across the complete revised Hubble sequence, with
intermediate to late-type (Sb-Sc) spirals being relatively more
common. Elmegreen Arm Classifications are also presented, and show
that more than 50% of the 514 spirals in the sample for which an arm
class could be judged are grand design (AC 8,9,12). The visual bar
fraction for the sample is ∼50%, but only 16% are classified as
strongly-barred (SB). The dominant family classification is SA
(nonbarred), the dominant inner variety classification is (s) (pure
spiral), and the dominant outer variety classification is no outer
ring, pseudoring, or lens. The Kolmogorov-Smirnov test is used to
check for potential biases in the morphological interpretations, and
for any possible relation between rings, bars, and arm classes with
local environment and far-infrared excess. The connection between
morphology and stellar mass is also examined for a subset of the
sample.
Description:
The catalogue provides comprehensive de Vaucouleurs revised
Hubble-Sandage (CVRHS) morphological types for 719 galaxies in the
AMIGA sample of isolated galaxies. For each galaxy, the catalogue
gives the number in the Catalogue of Isolated Galaxies, the number in
the Principal Galaxy Catalogue, the mean stage on the RC3 numerical
scale; the arm class, and the mean letter classification with the
parts separated as outer variety, family, inner and nuclear variety,
stage, and other features.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 75 719 CVRHS classifications for 719 Galaxies in the
AMIGA sample-phases 1 and 2 types
table3.dat 116 719 CVRHS classifications for 719 galaxies in the
AMIGA sample-mean catalog
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See also:
VII/119 : Catalogue of Principal Galaxies (PGC) (Paturel+ 1989)
VII/155 : Third Reference Cat. of Bright Galaxies (RC3)
(de Vaucouleurs+ 1991)
J/ApJS/217/32 : S4G galaxy morphologies in the CVRHS system (Buta+, 2015)
J/MNRAS/488/590 : CVRHS classifications for the EFIGI Galaxy Sample (Buta 2019)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- CIG Number in Catalogue of Isolated Galaxies
10- 14 I5 --- PGC Number in Principal Galaxy Catalogue
17- 47 A31 --- Phase1 Phase 1 classification (G1)
50- 75 A26 --- Phase2 Phase 2 classification (G1)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- CIG Number in Catalogue of Isolated Galaxies
18- 22 I5 --- PGC Number in Principal Galaxy Catalogue
27- 30 F4.1 --- ?=99 Mean stage (1)
33- 34 I2 --- AC Elmegreen arm class
35 A1 --- u_AC [:?] Uncertainty flag on AC
38- 46 A9 --- OV Outer variety (G1)
47- 57 A11 --- FAM Family (G1)
58- 73 A16 --- IV Inner/nuclear variety (G1)
74- 87 A14 --- ST Stage (G1)
88- 93 A6 --- SP Spindle classification (G1)
94- 99 A6 --- Pec Peculiar classification
100-116 A17 --- Oth Other classification addenda (G1)
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Note (1): On scale of Third Reference Catalogue of Bright Galaxies (RC3,
de Vaucouleurs et al. (1991rc3..book.....D 1991rc3..book.....D, Cat. VII/155);
99.0 means no stage could be determined.
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Global notes:
Note (G1): Classifications:
Outer variety as follows:
(RP) = (R') outer pseudoring
(RPL) = (R'L) = outer pseudoring-lens
(R) = outer ring
(RL) = outer ring-lens
(R1P) = (R_1') = OLR subclass
(R2P) = (R_2') = OLR subclass
(R1R2P) = (R1R2') = OLR subclass
(R1PR2P) = (R1'R2') = OLR subclass
(R1) = (R_1) = OLR subclass
(R1L) = (R_1L) = OLR subclass outer (R_1) ring-lens
(R2PL) = (R_2'L) = OLR subclass pseudoring-lens
(L) = outer lens
+ other combinations. The 1 and 2 are used as subscripts;
blank means no classification
Family as follows:
SA = nonbarred
S_AB = weakly-barred, more SA than SB
SAB = intermediate bar strength
SA_B = weakly-barred, but more SB than SA
SB = barred
_a means ansae and is meant as a subscript
blank means no classification
Inner/nuclear variety as follows:
(r) = inner ring
(_rs) = inner pseudoring, more (r) than (s)
(rs) = inner pseudoring
(r_s) = inner pseudoring, more (s) than (r)
(s) = spiral variety
(_rl) = inner ring-lens, more (r) than (l)
(rl) = inner ring-lens
(r_l) = inner ring-lens, more (l) than (r)
(l) = inner lens
(rpl) = (r'l) = inner pseudoring-lens
(bl) = barlens
(nl) = nuclear lens
(nrl) = nuclear ring-lens
(ns) = nuclear spiral
(nr) = nuclear ring
(p) = plumes
(tb) = triaxial bulge
(psb) = pseudobulge
Stage as follows:
a_b = more b than a
_ab = more a than b, etc
Spindle classification as follows:
sp = spindle (highly-inclined galaxy)
spw = spindle (warped)
Other classifications as follows:
BCD = blue compact dwarf galaxy
Sph = spheroidal galaxy
cc = clump cluster
RG = ring galaxy
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Acknowledgements:
Ronald Buta, rbuta(at)ua.edu
(End) Ronald Buta [Univ. of Alabama, USA], Patricia Vannier [CDS] 01-Aug-2019