2017ApJ...849...55S


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.19CEST14:20:01

2017ApJ...849...55S - Astrophys. J., 849, 55-55 (2017/November-8)

Virgo Redux: the masses and stellar content of nuclei in early-type galaxies from multiband photometry and spectroscopy.

SPENGLER C., COTE P., ROEDIGER J., FERRARESE L., SANCHEZ-JANSSEN R., TOLOBA E., LIU Y., GUHATHAKURTA P., CUILLANDRE J.-C., GWYN S., ZIRM A., MUNOZ R., PUZIA T., LANCON A., PENG E.W., MEI S. and POWALKA M.

Abstract (from CDS):

We present an analysis of 39 nuclei and their early-type hosts in the Virgo Cluster using 10 broadband filters: F300W, F475W, F850LP, F160W, u* griz, and Ks. We describe the Virgo Redux program, which provides high-resolution UV and NIR imaging. Combining this data with optical and NIR imaging from the ACS Virgo Cluster Survey and the Next Generation Virgo Cluster Survey, we estimate masses, metallicities, and ages using simple stellar population (SSP) models. For 19 nuclei, we compare to SSP parameters derived from Keck and Gemini spectra and find reasonable agreement between the photometric and spectroscopic metallicity: the rms scatter is 0.3 dex. We reproduce the nucleus-galaxy mass fraction of 0.33–0.07+0.09% for galaxy stellar masses 108.4–1010.3 M with a typical precision of ∼35% for the nuclei masses. Based on available model predictions, there is no single preferred formation scenario for nuclei, suggesting that nuclei are formed stochastically through a mix of processes. Nuclei metallicities are statistically identical to those of their hosts, appearing 0.07 ± 0.3 dex more metal-rich on average; however, omitting galaxies with unusual origins, nuclei are 0.20 ± 0.28 dex more metal-rich. Nuclei appear to be 0.56 ± 0.12 dex more metal-rich than ultracompact dwarf galaxies (UCDs) at fixed mass. We find no clear age difference between nuclei and their galaxies, with nuclei displaying a broad range of ages. Interestingly, we find that the most massive nuclei may be flatter and more closely aligned with the semimajor axes of their hosts, suggesting that they formed through predominantly dissipative processes.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: clusters: individual: Virgo - galaxies: elliptical and lenticular, cD - galaxies: nuclei - galaxies: photometry - galaxies: photometry

Errata: erratum vol. 869, art. 85 (2018)

Simbad objects: 44

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Number of rows : 44

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 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3629 0
2 IC 3032 GiG 12 11 07.764 +14 16 30.17   15.3       ~ 73 0
3 IC 3065 GiG 12 15 12.543 +14 25 58.26   14.7       ~ 80 0
4 MCG+02-31-076 GiG 12 16 33.691 +13 01 52.48   15.2       ~ 64 0
5 IC 3101 LSB 12 17 19.666 +11 56 36.96   15.5       ~ 64 0
6 2MASX J12221469+0710018 GiP 12 22 14.7390658782 +07 10 01.684478027           ~ 56 0
7 NGC 4352 GiG 12 24 05.0219273303 +11 13 05.088363600   14.0       ~ 148 0
8 NGC 4379 GiG 12 25 14.7451190451 +15 36 26.750240178 13.05 12.63 11.72     ~ 212 1
9 NGC 4387 GiG 12 25 41.6768872639 +12 48 37.809497625 13.42 13.01 12.12   10.87 ~ 374 1
10 IC 3328 GiP 12 25 57.964 +10 03 13.37   14.9       ~ 146 0
11 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6011 0
12 IC 3383 GiG 12 28 12.3163075226 +10 17 51.447384346   15.5 15.18     ~ 77 0
13 IC 3381 LSB 12 28 14.854 +11 47 23.69   14.42       ~ 146 1
14 NGC 4458 GiP 12 28 57.532 +13 14 30.90 13.27 12.93 12.07     ~ 392 2
15 GRDG +12 52 GiC 12 29 23.5153719439 +12 27 02.898413946   16 15.29   14.16 ~ 85 0
16 NGC 4467 GiG 12 29 30.267 +07 59 34.62   15.2       ~ 163 0
17 2MASX J12293498+0803286 G 12 29 34.9891159342 +08 03 28.779877515           ~ 79 0
18 NAME Vir B GrG 12 29.8 +08 00           ~ 120 0
19 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 1989 2
20 NGC 4474 GiG 12 29 53.544 +14 04 07.22   12.6       ~ 248 0
21 NGC 4482 GiG 12 30 10.3250399673 +10 46 46.084712572   14.2       ~ 153 0
22 NGC 4479 GiG 12 30 18.343 +13 34 38.88 13.73 13.40 12.44     ~ 169 2
23 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6385 3
24 IC 3442 GiG 12 31 20.1847539251 +14 06 54.716926859   15.4       ~ 93 0
25 IC 3461 GiG 12 32 02.747 +11 53 23.16   15.4 14.88   13.3 ~ 118 0
26 IC 3468 GiG 12 32 14.209 +10 15 05.55   14.6       ~ 124 0
27 IC 3470 GiP 12 32 23.353 +11 15 47.56   15.0       ~ 105 0
28 IC 798 GiG 12 32 33.398 +15 24 55.78   15.3       ~ 90 0
29 IC 3490 GiC 12 33 13.902 +10 55 42.73   15.6       ~ 70 0
30 IC 3506 GiC 12 34 06.739 +12 44 29.75   16.67 15.93   14.1 ~ 82 0
31 IC 3509 GiG 12 34 11.565 +12 02 55.89   15.3       ~ 102 0
32 NGC 4550 GiP 12 35 30.612 +12 13 15.44 12.97 12.56 11.68     ~ 512 1
33 2MASX J12353723+1222554 GiP 12 35 37.2509396284 +12 22 55.233540771   15.41       ~ 85 0
34 NGC 4551 GiP 12 35 37.980 +12 15 50.44 13.49 12.97 12.02     ~ 337 1
35 LEDA 42046 G 12 36 24.781 +10 23 04.75   16       ~ 71 0
36 IC 3633 GiG 12 40 11.2497201632 +09 53 46.052380646   15.4       ~ 68 0
37 IC 3635 GiG 12 40 13.334 +12 52 29.98   15.5       ~ 72 0
38 IC 3652 GiG 12 40 58.5600973863 +11 11 04.081313393   15.1       ~ 104 0
39 IC 3653 GiG 12 41 15.721 +11 23 13.85   14.7       ~ 104 0
40 NGC 4612 GiG 12 41 32.758 +07 18 53.21   11.90       ~ 199 1
41 IC 3663 GiC 12 41 39.412 +12 14 50.63   15.65     14.0 ~ 66 0
42 IC 3672 GiG 12 42 08.6669706774 +11 45 15.437359667   15.1       ~ 101 0
43 IC 3735 G 12 45 20.376 +13 41 33.74   15.1       ~ 79 0
44 IC 3779 GiG 12 47 20.281 +12 09 59.58   15.5     13.3 ~ 75 0

    Equat.    Gal    SGal    Ecl

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2021.04.19-14:20:02

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