J/ApJ/875/60 SAMI Galaxy Survey: early-type gal. in A119 & A168 (Jeong+, 2019)
The SAMI Galaxy Survey: kinematic alignments of early-type galaxies in A119 and
A168.
Jeong H., Kim S., Owers M.S., Joo S.-J., Kim H.-S., Lee W., Lee Y.,
van de Sande J., Lee J., Yi S.K., Croom S.M., Bryant J.J., Rey S.-C.,
Brough S., Oh S., Scott N., Tonini C., Medling A.M., Sweet S.M.,
Bland-Hawthorn J., Konstantopoulos I.S., Lawrence J.S., Richards S.N.
<Astrophys. J., 875, 60 (2019)>
=2019ApJ...875...60J 2019ApJ...875...60J
ADC_Keywords: Clusters, galaxy; Galaxies, spectra; Optical; Morphology
Keywords: galaxies: clusters: individual (A119 and A168) ; galaxies: evolution ;
galaxies: formation ; galaxies: kinematics and dynamics
Abstract:
We investigate the kinematic alignments of luminous early-type
galaxies (Mr≤-19.5mag) in A119 and A168 using the kinematic
position angles (PAkin) from the Sydney-AAO Multi-object
Integral-field spectrograph (SAMI) survey data, motivated by the
implication of the galaxy spin alignment in a cosmological context. To
increase the size of our sample for statistical significance, we also
use the photometric position angles (PAphot) for galaxies that have
not been observed by SAMI, if their ellipticities are higher than
0.15. Our luminous early-type galaxies tend to prefer the specific
position angles in both clusters, confirming the results of
Kim+ (2018ApJ...860L...3K 2018ApJ...860L...3K), who recently found the kinematic alignment
of early-type galaxies in the Virgo cluster based on the ATLAS3D
integral-field spectroscopic data. This alignment signal is more
prominent for galaxies in the projected phase-space regions dominated
by infalling populations. Furthermore, the alignment angles are
closely related to the directions of the filamentary structures around
clusters. The results lead us to conclude that many cluster early-type
galaxies are likely to be accreted along filaments while maintaining
their spin axes, which are predetermined before cluster infall.
Description:
We begin by selecting all member galaxies in A119 and A168 from
Owers+ (2017MNRAS.468.1824O 2017MNRAS.468.1824O) observed as part of the SAMI survey. The
morphological classification to select early-type galaxies is based on
visual inspection by five authors using both the SDSS DR14 and the
Dark Energy Camera Legacy Survey color-composite images.
To investigate the kinematic alignment of cluster early-type galaxies,
we use the values of the kinematic position angles (PAkin) from the
Sydney-AAO Multi-object Integral-field spectrograph (SAMI) mounted on
the 3.9m Anglo-Australian Telescope (AAT).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 49 2 Properties of A119 and A168
table3.dat 62 173 The properties of our luminous early-type sample
galaxies in Abell 119 and Abell 168
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See also:
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)
J/AJ/105/788 : Study of Abell 119 (Fabricant+ 1993)
J/A+A/430/19 : VRI photometry of Abell 3921 galaxies (Ferrari+, 2005)
J/MNRAS/413/971 : Galaxy And Mass Assembly (GAMA) DR1 (Driver+, 2011)
J/ApJS/199/26 : The 2MASS Redshift Survey (2MRS) (Huchra+, 2012)
J/other/RAA/12.1381 : BATC photometry on A119 (Tian+, 2012)
J/MNRAS/445/4073 : Two catalogues of superclusters (Chow-Martinez+, 2014)
J/MNRAS/454/2050 : SAMI Pilot Survey (Fogarty+, 2015)
J/MNRAS/446/1567 : SAMI Galaxy Survey: EDR (Allen+, 2015)
J/MNRAS/454/2050 : SAMI Pilot Survey (Fogarty+, 2015)
J/MNRAS/456/1299 : SAMI Galaxy Survey: gas streaming (Cecil+, 2016)
J/MNRAS/465/123 : SAMI Galaxy Survey asymmetries (Bloom+, 2017)
J/MNRAS/468/3965 : SAMI Galaxy Survey. Gas surface densities (Federrath+, 2017)
J/ApJ/835/104 : SAMI Galaxy Survey: rotators class. (van de Sande+, 2017)
J/A+A/633/A104 : WINGS cluster gal. structural param. (Psychogyios+, 2020)
http://sami-survey.org/data/ : SAMI Galaxy Survey home page
http://www.sdss.org/dr14/ : SDSS DR14 home page
http://www.legacysurvey.org/decamls/ : DECaLS home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Cl Cluster identifier
11- 19 F9.6 deg RAdeg Right ascension in decimal degrees (J2000) (1)
21- 29 F9.6 deg DEdeg Declination in decimal degrees (J2000) (1)
31- 36 F6.4 --- z [0.044/0.045] Redshift (1)
38- 40 F3.1 10+14Msun M200 [1.9/8.6] Mass (1)
42- 44 F3.1 10+14Msun e_M200 [1.1/3.1] M200 uncertainty (1)
46- 49 F4.2 Mpc R200 [1.32/2.04] Radius (1)
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Note (1): RA, DE, z, M200, and R200 are all from Owers+ (2017MNRAS.468.1824O 2017MNRAS.468.1824O).
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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- 10 I10 --- Galaxy [9011900001/9016802517] Galaxy identifier
12- 20 A9 --- Cl Cluster identifier
22- 29 F8.5 deg RAdeg [12.74/19.64] Right Ascension (J2000)
31- 38 F8.5 deg DEdeg [-2.73/1.43] Declination (J2000)
40- 45 F6.2 mag rMag [-23.5/-19.5] Absolute r-band magnitude
47- 49 I3 deg PAphot [1/178] Potometric position angle
51- 54 I4 deg PAkin [4/178]?=-999 Kinematic position angle
if SAMI Integral-field spectrograph data
is available
56- 59 F4.2 --- Ell [0.02/0.73] Ellipticity
61- 62 A2 --- Class Phase-space classification (1)
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Note (1): Classification as follows:
R1 = Ancient infaller (91 occurrences);
R2 = Infalling population (82 occurrences).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 03-Sep-2020