2012A&A...545A.142B


C.D.S. - SIMBAD4 rel 1.7 - 2020.06.04CEST23:48:45

2012A&A...545A.142B - Astronomy and Astrophysics, volume 545A, 142-142 (2012/9-1)

The GALEX ultraviolet Virgo Cluster Survey (GUViCS). II. Constraints on star formation in ram-pressure stripped gas.

BOISSIER S., BOSELLI A., DUC P.-A., CORTESE L., VAN DRIEL W., HEINIS S., VOYER E., CUCCIATI O., FERRARESE L., COTE P., CUILLANDRE J.-C., GWYN S.D.J. and MEI S.

Abstract (from CDS):

Several galaxies in the Virgo cluster are known to have large H i gas tails related to a recent ram-pressure stripping event. The Virgo cluster has been extensively observed at 1539Å in the far-ultraviolet for the GALEX Ultraviolet Virgo Cluster Survey (GUViCS), and in the optical for the Next Generation Virgo Survey (NGVS), allowing a study of the stellar emission potentially associated with the gas tails of 8 cluster members. On the theoretical side, models of ram-pressure stripping events have started to include the physics of star formation. We aim to provide quantitative constraints on the amount of star formation taking place in the ram-pressure stripped gas, mainly on the basis of the far-UV emission found in the GUViCS images in relation with the gas content of the tails. We have performed three comparisons of the young stars emission with the gas column density: visual, pixel-by-pixel, and global. We have compared our results to other observational and theoretical studies. We find that the level of star formation taking place in the gas stripped from galaxies by ram-pressure is low with respect to the available amount of gas. Star formation is lower by at least a factor 10 compared to the predictions of the Schmidt Law as determined in regular spiral galaxy disks. It is also lower than measured in dwarfs galaxies and the outer regions of spirals, and than predicted by some numerical simulations. We provide constraints on the star formation efficiency in the ram-pressure stripped gas tails, and compare these with current models.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: Virgo - galaxies: star formation - galaxies: interactions

Status at CDS:  

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 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 989 1
2 NGC 4262 GiG 12 19 30.582 +14 52 39.78 13.00 12.49 11.55     ~ 330 1
3 NGC 4294 GiP 12 21 17.787 +11 30 39.99   12.6       ~ 258 0
4 NGC 4298 GiP 12 21 32.7577915037 +14 36 22.056303797   12.04 11.34     ~ 277 1
5 NGC 4299 GiP 12 21 40.548 +11 29 59.74   12.8       ~ 222 0
6 NGC 4302 GiP 12 21 42.477 +14 35 51.94   13.4 11.61     ~ 285 0
7 NGC 4330 GiG 12 23 17.249 +11 22 04.73   14.0       ~ 184 0
8 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1180 2
9 NGC 4396 GiG 12 25 58.802 +15 40 17.28 12.94 13.06 12.58     ~ 155 1
10 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1011 1
11 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5801 0
12 NGC 4424 H2G 12 27 11.5747046042 +09 25 14.319813630   13.1       ~ 284 0
13 NGC 4438 LIN 12 27 45.652 +13 00 30.92 11.37 11.02 10.17     ~ 578 3
14 SDSS J122942.96+104525.0 Sy2 12 29 42.9608284592 +10 45 24.917484479           ~ 88 0
15 IC 3418 LIN 12 29 43.919 +11 24 16.87   16.5       ~ 95 1
16 UGC 7636 LSB 12 30 00.350 +07 55 47.44   15.4       ~ 117 0
17 NGC 4522 GiG 12 33 39.657 +09 10 29.54   13.6       ~ 327 0
18 M 90 Sy2 12 36 49.816 +13 09 46.33 10.56 10.26 9.54     ~ 791 1
19 NGC 4654 GiP 12 43 56.638 +13 07 34.86   11.8       ~ 501 1

    Equat.    Gal    SGal    Ecl

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2020.06.04-23:48:45

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