2008A&A...483...89V


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST21:22:42

2008A&A...483...89V - Astronomy and Astrophysics, volume 483, 89-106 (2008/5-3)

Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501.

VOLLMER B., SOIDA M., CHUNG A., VAN GORKOM J.H., OTMIANOWSKA-MAZUR K., BECK R., URBANIK M. and KENNEY J.D.P.

Abstract (from CDS):

VIVA HI observations of the Virgo spiral galaxy NGC 4501 are presented. The HI disk is sharply truncated to the southwest, well within the stellar disk. A region of low surface-density gas, which is more extended than the main HI disk, is discovered northeast of the galaxy center. These data are compared to existing 6cm polarized radio continuum emission, Hα, and optical broad band images. We observe a coincidence between the western HI and polarized emission edges, on the one hand, and a faint Hα emission ridge, on the other. The polarized emission maxima are located within the gaps between the spiral arms and the faint Hα ridge. Based on the comparison of these observations with a sample of dynamical simulations with different values for maximum ram pressure and different inclination angles between the disk and the orbital plane, we conclude that ram pressure stripping can account for the main observed characteristics. NGC 4501 is stripped nearly edge-on, is heading southwest, and is ∼200-300Myr before peak ram pressure, i.e. its closest approach to M 87. The southwestern ridge of enhanced gas surface density and enhanced polarized radio-continuum emission is due to ram pressure compression. It is argued that the faint western Hα emission ridge is induced by nearly edge-on ram pressure stripping. NGC 4501 represents an especially clear example of early stage ram pressure stripping of a large cluster-spiral galaxy.

Abstract Copyright:

Journal keyword(s): galaxies: individual: NGC 4501 - galaxies: interactions - galaxies: ISM - galaxies: kinematics and dynamics

CDS comments: Paragraph 2.1 1252+199 is a misprint for 1252+119 (JVAS B1252+119).

Simbad objects: 19

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Number of rows : 19

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 M 37 OpC 05 52 18 +32 33.2   6.19 5.6     ~ 332 2
2 NGC 2276 IG 07 27 14.485 +85 45 16.20   12.3       ~ 340 0
3 NGC 2442 LIN 07 36 23.842 -69 31 50.96 11.47 11.15 10.42 9.71 10.4 ~ 183 1
4 M 66 GiP 11 20 15.026 +12 59 28.64 9.85 9.65 8.92     ~ 1158 4
5 NGC 4216 GiP 12 15 54.444 +13 08 57.84 11.51 10.99 10.01     ~ 374 1
6 NGC 4222 GiP 12 16 22.522 +13 18 25.46   13.86       ~ 173 1
7 M 99 H2G 12 18 49.625 +14 24 59.36 10.45 10.44 9.87     ~ 762 2
8 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1183 2
9 NGC 4402 GiP 12 26 07.566 +13 06 46.06   12.55       ~ 355 1
10 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5824 0
11 NGC 4438 LIN 12 27 45.652 +13 00 30.92 11.37 11.02 10.17     ~ 578 3
12 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6207 3
13 M 88 Sy2 12 31 59.216 +14 25 13.48   14.33 13.18     ~ 727 1
14 M 91 LIN 12 35 26.430 +14 29 46.75   14.63 13.57     ~ 523 0
15 M 90 Sy2 12 36 49.816 +13 09 46.33 10.56 10.26 9.54     ~ 794 1
16 M 58 SyG 12 37 43.597 +11 49 05.12 10.80 10.48 9.66     ~ 968 2
17 NGC 4654 GiP 12 43 56.638 +13 07 34.86   11.8       ~ 501 1
18 QSO B1252+119 QSO 12 54 38.25561161 +11 41 05.8951798   16.99 16.64 16.76   ~ 242 1
19 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3715 1

    Equat.    Gal    SGal    Ecl

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2020.07.04-21:22:42

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