2018A&A...615A.114B


Query : 2018A&A...615A.114B

2018A&A...615A.114B - Astronomy and Astrophysics, volume 615A, 114-114 (2018/7-1)

A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE). III. Star formation in the stripped gas of NGC 4254.

BOSELLI A., FOSSATI M., CUILLANDRE J.C., BOISSIER S., BOQUIEN M., BUAT V., BURGARELLA D., CONSOLANDI G., CORTESE L., COTE P., COTE S., DURRELL P., FERRARESE L., FUMAGALLI M., GAVAZZI G., GWYN S., HENSLER G., KORIBALSKI B., ROEDIGER J., ROEHLLY Y., RUSSEIL D., SUN M., TOLOBA E., VOLLMER B. and ZAVAGNO A.

Abstract (from CDS):

During pilot observations of the Virgo Environmental Survey Tracing Galaxy Evolution (VESTIGE), a blind narrow-band Hα+[NII] imaging survey of the Virgo cluster carried out with MegaCam at the CFHT, we have observed the spiral galaxy NGC 4254 (M99). Deep Hα+[NII] narrow-band and GALEX UV images reveal the presence of 60 compact (70-500pc radius) star-forming regions up to ~=20kpc outside the optical disc of the galaxy. These regions are located along a tail of HI gas stripped from the disc of the galaxy after a rapid gravitational encounter with another Virgo cluster member that simulations indicate occurred 280-750Myr ago. We have combined the VESTIGE data with multifrequency data from the UV to the far-infrared to characterise the stellar populations of these regions and study the star formation process in an extreme environment such as the tails of stripped gas embedded in the hot intracluster medium. The colour, spectral energy distribution (SED), and linear size consistently indicate that these regions are coeval and have been formed after a single burst of star formation that occurred ≤100Myr ago. These regions might become free floating objects within the cluster potential well, and be the local analogues of compact sources produced after the interaction of gas-rich systems that occurred during the early formation of clusters.

Abstract Copyright: © ESO 2018

Journal keyword(s): galaxies: individual: NGC 4254 - galaxies: clusters: general - galaxies: clusters: individual: Virgo - galaxies: evolution - galaxies: interactions - galaxies: ISM

Status at CDS : Objects in title, abstract, text, figures, and all or part of small table(s) being processed in SIMBAD.

Simbad objects: 16

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Number of rows : 16
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 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15597 1
2 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1021 1
3 M 99 H2G 12 18 49.625 +14 24 59.36 10.45 10.44 9.87     ~ 808 2
4 NGC 4262 GiG 12 19 30.582 +14 52 39.78 13.00 12.49 11.55     ~ 333 1
5 NGC 4298 GiP 12 21 32.7577915037 +14 36 22.056303797   12.04 11.34     ~ 290 1
6 AGC 226067 G 12 21 55.2 +13 28 10           ~ 16 0
7 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6102 0
8 IC 3418 LIN 12 29 43.919 +11 24 16.87   16.5       ~ 102 1
9 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 1998 2
10 UGC 7636 LSB 12 30 00.350 +07 55 47.44   15.4       ~ 123 0
11 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6498 3
12 NGC 4524 EmG 12 33 54.3855857658 -12 01 39.632565503   14   13.32   ~ 24 0
13 M 90 Sy2 12 36 49.816 +13 09 46.33 10.56 10.26 9.54     ~ 823 1
14 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4399 2
15 NGC 5291 AGN 13 47 24.459 -30 24 25.03   15.18 14.00 13.57 12.7 ~ 145 1
16 ESO 137-1 G 16 13 27.305 -60 45 50.59   14.84   13.87   ~ 96 0

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2021.10.27-09:55:37

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