2018MNRAS.477.4711G


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.30CET22:50:59

2018MNRAS.477.4711G - Mon. Not. R. Astron. Soc., 477, 4711-4737 (2018/July-2)

SDSS-IV MaNGA: stellar angular momentum of about 2300 galaxies: unveiling the bimodality of massive galaxy properties.

GRAHAM M.T., CAPPELLARI M., LI H., MAO S., BERSHADY M.A., BIZYAEV D., BRINKMANN J., BROWNSTEIN J.R., BUNDY K., DRORY N., LAW D.R., PAN K., THOMAS D., WAKE D.A., WEIJMANS A.-M., WESTFALL K.B. and YAN R.

Abstract (from CDS):

We measure λR e_, a proxy for galaxy specific stellar angular momentum within one effective radius, and the ellipticity, ε, for about 2300 galaxies of all morphological types observed with integral field spectroscopy as part of the Mapping Nearby Galaxies at Apache Point Observatory survey, the largest such sample to date. We use the (λR e_, ε) diagram to separate early-type galaxies into fast and slow rotators. We also visually classify each galaxy according to its optical morphology and two-dimensional stellar velocity field. Comparing these classifications to quantitative λR e_ measurements reveals tight relationships between angular momentum and galaxy structure. In order to account for atmospheric seeing, we use realistic models of galaxy kinematics to derive a general approximate analytic correction for λR e_. Thanks to the size of the sample and the large number of massive galaxies, we unambiguously detect a clear bimodality in the (λR e_, ε) diagram which may result from fundamental differences in galaxy assembly history. There is a sharp secondary density peak inside the region of the diagram with low λR e_ and ε < 0.4, previously suggested as the definition for slow rotators. Most of these galaxies are visually classified as non-regular rotators and have high velocity dispersion. The intrinsic bimodality must be stronger, as it tends to be smoothed by noise and inclination. The large sample of slow rotators allows us for the first time to unveil a secondary peak at ±90° in their distribution of the misalignments between the photometric and kinematic position angles. We confirm that genuine slow rotators start appearing above M >= 2 x 1011 M where a significant number of high-mass fast rotators also exist.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: formation - galaxies: kinematics and dynamics - galaxies: spiral

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 33

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Number of rows : 33

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 502 GiG 01 22 55.540 +09 02 57.01   13.8       ~ 77 0
2 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1574 0
3 UGC 3960 G 07 40 22.7455422644 +23 16 29.954549364   15.0       ~ 52 0
4 NGC 2592 G 08 27 08.0513672756 +25 58 13.126845025   13.6       ~ 97 0
5 UGC 4551 G 08 44 05.900 +49 47 38.29 13.87 13.40 12.46     ~ 81 1
6 NGC 2679 GiP 08 51 32.9415764823 +30 51 55.204558946   14.3       ~ 61 0
7 NGC 2778 GiP 09 12 24.3746247420 +35 01 39.130438907   13.1       ~ 268 0
8 NGC 3032 AGN 09 52 08.1487752500 +29 14 10.423175735   13.87 13.28     ~ 236 0
9 UGC 6014 G 10 53 42.690 +09 43 40.53   15.2       ~ 30 0
10 NGC 3457 GiG 10 54 48.6362871430 +17 37 16.421821766   13.0       ~ 89 0
11 NGC 3458 GiG 10 56 01.4792363060 +57 07 01.100122110   13.20       ~ 98 1
12 UGC 6062 G 10 58 37.5654170345 +09 03 01.599767118   13.7       ~ 57 0
13 IC 676 GiG 11 12 39.8140774166 +09 03 19.836734750   13.4       ~ 124 0
14 NGC 3648 GiG 11 22 31.5071228129 +39 52 36.781720177   13.57 12.64     ~ 68 0
15 NGC 3674 GiG 11 26 26.6127569213 +57 02 54.068612346   13.1       ~ 66 0
16 NGC 4255 GiG 12 18 56.1470379896 +04 47 10.071927485   13.5       ~ 91 0
17 NGC 4262 GiG 12 19 30.582 +14 52 39.78 13.00 12.49 11.55     ~ 333 1
18 NGC 4283 GiG 12 20 20.7698972563 +29 18 39.156951946 13.47 13.00 12.07     ~ 187 1
19 NGC 4377 GiG 12 25 12.308 +14 45 43.98   12.5       ~ 205 0
20 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5930 0
21 NGC 4434 GiG 12 27 36.680 +08 09 15.52   13.2       ~ 236 0
22 NGC 4478 GiP 12 30 17.439 +12 19 42.88 12.82 12.36 11.45   10.17 ~ 473 1
23 UGC 7658 GiG 12 30 57.730 +12 16 13.30   11.2       ~ 211 0
24 NGC 4660 GiP 12 44 31.9848549289 +11 11 25.730688043   12.1       ~ 400 0
25 NGC 4684 GiG 12 47 17.5106270078 -02 43 38.635289496   12.4       ~ 128 0
26 NGC 4679 EmG 12 47 30.249 -39 34 15.03   13.32 11.90 12.20 12.8 ~ 70 0
27 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4288 2
28 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1033 0
29 NGC 5507 GiP 14 13 19.878 -03 08 55.90   13.30 12.46     ~ 94 0
30 NGC 5770 GiG 14 53 15.0123896704 +03 57 35.041690491 13.49 13.15 12.26     ~ 95 1
31 NGC 5845 GiG 15 06 00.787 +01 38 01.77   13.8 11.20 12.06 9.94 ~ 357 0
32 NGC 5846 BiC 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 783 1
33 NGC 6278 GiP 17 00 50.3235661456 +23 00 39.759687248   13.8       ~ 135 0

    Equat.    Gal    SGal    Ecl

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2020.11.30-22:50:59

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