J/ApJS/237/14 KASI-Yonsei Deep Imaging Survey of Clusters (KYDISC) (Oh+, 2018)
KYDISC: galaxy morphology, quenching, and mergers in the cluster environment.
Oh S., Kim K., Lee J.H., Sheen Y.-K., Kim M., Ree C.H., Ho L.C., Kyeong J.,
Sung E.-C., Park B.-G., Yi S.K.
<Astrophys. J. Suppl. Ser., 237, 14 (2018)>
=2018ApJS..237...14O 2018ApJS..237...14O
ADC_Keywords: Clusters, galaxy; Velocity dispersion; Galaxies, spectra;
Photometry, ugriz; Redshifts; Morphology
Keywords: galaxies: clusters: general ; galaxies: evolution ;
galaxies: fundamental parameters ; galaxies: interactions ; catalogs
Abstract:
We present the KASI-Yonsei Deep Imaging Survey of Clusters targeting
14 clusters at 0.015≲z≲0.144 using the Inamori Magellan Areal Camera
and Spectrograph on the 6.5m Magellan Baade telescope and the MegaCam
on the 3.6m Canada-France-Hawaii Telescope. We provide a catalog of
cluster galaxies that lists magnitudes, redshifts, morphologies,
bulge-to-total ratios, and local density. Based on the 1409
spectroscopically confirmed cluster galaxies brighter than -19.8 in
the r band, we study galaxy morphology, color, and visual features
generated by galaxy mergers. We see a clear trend between
morphological content and cluster velocity dispersion, which was not
presented by previous studies using local clusters. Passive spirals
are preferentially found in a highly dense region (i.e., cluster
center), indicating that they have gone through environmental
quenching. In deep images (µr'∼27mag/arcsec2), 20% of our
sample shows signatures of recent mergers, which is not expected from
theoretical predictions and a low frequency of ongoing mergers in our
sample (∼4%). Such a high fraction of recent mergers in the cluster
environment supports a scenario that the merger events that made the
features have preceded the galaxy accretion into the cluster
environment. We conclude that mergers affect a cluster population
mainly through the preprocessing of recently accreted galaxies.
Description:
The optical images of three Abell clusters (Abell 1146, Abell 3574,
and Abell 3659) were obtained in the g' and r' bands using the IMACS
on the 6.5m Magellan Baade telescope at Las Campanas Observatory (LCO)
on a dark night in 2012. All clusters were observed with two different
exposures, long and short. See section 2.1.1.
Deep images of 11 Abell clusters in the u', g', and r' bands were
obtained by queued service observations using the MegaCam on the 3.6m
CFHT in the 2012A and 2013A seasons. See section 2.1.2.
Galaxy spectra for Abell 1146 and Abell 3659 were taken using the
IMACS in 2013 (4800-7800Å; R∼700). See section 2.4.1.
We carried out multi-slit spectroscopy for Abell 3574 with the
Wide-field Reimaging CCD Camera (WFCCD) on the du Pont 2.5m telescope
at LCO in 2014 (3800-7600Å; R∼970). See section 2.4.2.
We obtained galaxy spectra for Abell 1126, Abell 2061, and Abell 2249
using the Hydra on the WIYN 3.5m telescope in 2015 (4579-7431Å;
R∼1790). See section 2.4.3.
We determined cluster memberships based on spectroscopic information
from observations using the IMACS, Hydra, and WFCCD and from archival
data. We collected redshift information from the NASA/IPAC
Extragalactic Database (NED) and the SDSS for the sample cluster
fields. Additionally, we obtained redshift information for Abell 667,
Abell 655, and Abell 646 from the Hectospec Cluster Survey (HeCS;
Rines+ 2013, J/ApJ/767/15).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 60 14 Cluster characteristics
table10.dat 205 1409 KYDISC catalog
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See also:
VII/259 : 6dF galaxy survey final redshift release (Jones+, 2009)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
J/ApJS/147/1 : Classification of nearby galaxies (Conselice+, 2003)
J/AJ/130/2647 : Tidal features of 126 nearby red gal. (van Dokkum+, 2005)
J/A+A/451/881 : ESIS BVR catalog, ELAIS-S1 (Berta+, 2006)
J/ApJ/643/680 : Imaging & spectroscopy around PKS0405-123 (Prochaska+, 2006)
J/ApJ/660/1151 : Morphology of galaxies in 10 EDisCS clusters (Desai+, 2007)
J/AJ/134/579 : Morphologically classified gal. from SDSS (Fukugita+, 2007)
J/ApJ/697/1369 : GOODS Ks-selected multiwavelength compil. (Bundy+, 2009)
J/A+A/495/707 : WINGS spectroscopy of 48 galaxy clusters (Cava+, 2009)
J/MNRAS/393/1531 : BUDDA structural properties of galaxies (Gadotti+, 2009)
J/ApJ/716/942 : Bulges of nearby galaxies with Spitzer (Fisher+, 2010)
J/MNRAS/406/382 : Early-type galaxies in the SDSS Stripe82 (Kaviraj, 2010)
J/AJ/145/77 : Imaging & spectrosc. in 3 galaxy clusters (Jorgensen+, 2013)
J/ApJ/767/15 : Hectospec Cluster Survey (HeCS) (Rines+, 2013)
J/ApJS/220/3 : SDSS-DR7 isolated galaxy morphologies (Khim+, 2015)
J/ApJS/216/19 : Spectroscopic HK' index for 3 globular clusters (Lim+, 2015)
J/MNRAS/446/3943 : galaxies 2D phot. decompositions in SDSS-DR7 (Meert+, 2015)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1-10 A10 --- Cl Cluster name
12-16 I5 km/s Vcen [4709/43255] Central radial velocity (1)
18-20 I3 km/s sigma [433/992] Radial velocity dispersion
(σobs) (1)
22-24 I3 km/s e_sigma [30/110] sigma uncertainty
26-29 F4.2 Mpc R200 [1/2.3] Virial radius R200 (see Equation 1)
31-34 F4.2 Mpc e_R200 [0.08/0.3] R200 uncertainty
36-40 F5.2 10+14Msun M200 [1/12.4] Cluster mass M200 (see Equation 2)
42-45 F4.2 10+14Msun e_M200 [0.2/4.3] Negative uncertainty on M200
47-50 F4.2 10+14Msun E_M200 [0.2/3.4] Positive uncertainty on M200
52-54 I3 --- Nm [14/250] Number of spectroscopically
confirmed member galaxies (2)
56-60 A5 --- ACl Abbreviated cluster name as used in Table 10;
column added by CDS
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Note (1): The radial velocity dispersion (σobs) and the central radial
velocity (Vcen) of clusters are estimated from a Gaussian fit of the
distribution of radial velocities (Figure 3). We select galaxies as
possible members of each cluster when they have a radial velocity
(vrv) within ±3σobs from the central radial velocity
(Vcen).
Note (2): In summary, we selected galaxies with |vrv-Vcen|<3σobs,
R<2R200, and Mr'<-19.8 as the members of each cluster.
See section 3 for further explanations.
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Byte-by-byte Description of file: table10.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- ACl Abbreviated cluster name
6 A1 --- --- [_]
7- 11 I05 --- ID [1/2894] Galaxy ID within the cluster
13- 23 F11.7 deg RAdeg Right accession in decimal degrees (J2000)
25- 35 F11.7 deg DEdeg Declination in decimal degrees (J2000)
37- 43 F7.5 --- z [0.011/0.152] Spectroscopic redshift
45 I1 --- r_z [0/6]? Origin of z (1)
47- 55 F9.5 --- e_z [0.00001/0.002]?=-99 Error in z
57- 64 F8.4 mag umag [15/25.2]?=-99 Extinction-corrected
u' band magnitude
66- 72 F7.4 mag gmag [13/20.7] Extinction-corrected g' band magnitude
74- 80 F7.4 mag rmag [12/19.7] Extinction-corrected r' band magnitude
82- 90 F9.4 mag e_umag [0.001/1.1]?=-99 Error in umag
92- 97 F6.4 mag e_gmag [0.0003/0.04] Error in gmag
99-104 F6.4 mag e_rmag [0.0002/0.02] Error in rmag
106-114 F9.4 mag ukcor [-4/0.6]?=-99 k-correction for u' band magnitude
116-122 F7.4 mag gkcor [-0.02/0.5] k-correction for g' band magnitude
124-130 F7.4 mag rkcor [-0.05/0.2] k-correction for r' band magnitude
132-137 F6.3 arcsec re [0.3/29.6] Circularized effective radius
in r' band
139-143 F5.3 --- ee [0.004/0.8] Ellipticity at re
145-151 F7.3 deg PAe Position angle at re; N=90, E=0
153-159 F7.3 arcsec r90 [0.7/125.2] Circularized radius (2)
161-165 F5.3 --- e90 [0.004/0.8] Ellipticity at r90
167-173 F7.3 deg PA90 Position angle at r90; N=90, E=0
175-179 F5.3 --- R/R200 [0/2] Cluster-centric distance
181-185 F5.2 [-] logD10 [-1/3.1] log local density
187-191 F5.3 --- B/T [0.01/1] Bulge-to-total ratio in r' band
using galfit
193-197 F5.2 --- A [0.02/0.8] CAS asymmetry parameter (detailed in
Conselice+, 2013, J/ApJS/147/1) in r' band
199 I1 --- HType [0/3] Hubble type; E=0, S0=1, SE=2, and SL=3
201 I1 --- SigH [2/5] Significance of the Hubble classification
203 I1 --- MType [0/2]? Merger type; Normal=0, OM=1, and PM=2 (3)
205 I1 --- SigM [2/5] Significance of the Merger classification
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Note (1): Origin of redshift as follows:
0 = the 2.5m du Pont Telescopes located at Las Campanas Observatory, Chile
(see section 2.4.2);
1 = the Inamori Magellan Areal Camera and Spectrograph (IMACS) on the 6.5m
Magellan Baade telescope (see section 2.4.1);
2 = the Hydra on the WIYN 3.5m telescope (see section 2.4.3);
3 = HeCS (Hectospec Cluster Survey; Rines+ 2013, J/ApJ/767/15);
4 = the NASA/IPAC Extragalactic Database (NED);
5 = SDSS (see V/147);
6 = 6dF (see VII/259).
See also the "Description" section above.
Note (2): Containing 90% of total light in r' band.
Note (3): Type as follows:
1 = ongoing mergers (OM) with close pairs within four times <r90>
(53 occurrences)
2 = galaxies with features seemingly related to mergers in the past without
relevant pairs for the features ("PM"; 279 occurrences).
0 = Normal (1077 galaxies).
See section 4.2.2.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 05-Sep-2018