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Pré-Publication, Document De Travail Année : 2020

A Virgo Environmental Survey Tracing Ionised Gas Emission. VESTIGE VIII. Bridging the cluster-ICM-galaxy evolution at small scales

Chengze Liu
  • Fonction : Auteur
Patrick Côté
  • Fonction : Auteur
Eric W. Peng
  • Fonction : Auteur
Joel Roediger
  • Fonction : Auteur
Hongxin Zhang
  • Fonction : Auteur
Laura Ferrarese
  • Fonction : Auteur
Rubén Sánchez-Janssen
Puragra Guhathakurta
  • Fonction : Auteur
Xiaohu Yang
  • Fonction : Auteur
Yipeng Jing
  • Fonction : Auteur
Karla Alamo-Martinez
  • Fonction : Auteur
John P. Blakeslee
  • Fonction : Auteur
Jean-Charles Cuilandre
  • Fonction : Auteur
Pierre-Alain Duc
Patrick Durrell
Stephen Gwyn
Andres Jordán
Youkyung Ko
  • Fonction : Auteur
Ariane Lançon
Sungsoon Lim
Alessia Longobardi
  • Fonction : Auteur
Simona Mei
  • Fonction : Auteur
J. Christopher Mihos
  • Fonction : Auteur
Roberto Munoz
  • Fonction : Auteur
Mathieu Powalka
  • Fonction : Auteur
Thomas Puzia
Chelsea Spengler
  • Fonction : Auteur
Elisa Toloba
  • Fonction : Auteur

Résumé

We measure FIR emission from tails of stripped dust following the ionised and atomic gas components in galaxies undergoing ram pressure stripping. We study the dust-to-gas relative distribution and mass ratio in the stripped interstellar medium and relate them to those of the intra-cluster medium, thus linking the cluster-ICM-galaxy evolution at small-scales. The galaxy sample consists of three Scd Virgo galaxies with stellar masses in the range $10^9\lesssim \mathrm{M_{*}} \lesssim 10^{10}\, \mathrm{M_{\odot}}$, and within 1 Mpc from the cluster centre, namely NGC 4330, NGC 4522, and NGC 4654. Through the analysis of VESTIGE H$\alpha$, $Herschel$ SPIRE far-infrared, and VIVA HI data, we trace the spatial distribution of the tails and infer the dust and gas masses from the measured far-infrared 250 $\mu$m and HI flux densities. Dust-to-gas mass ratios (DGRs) in the tails are analysed as a function of the galaxy mass, metallicity, and dust temperature. Along the stripped component, the dust distribution closely follows the HI and H$\alpha$ emitting gas, all extending beyond the optical disc. In these regions, the DGRs are $2.0\pm0.6\times10^{-3}$, $0.7\pm0.1\times10^{-3}$, and $0.4\pm0.03\times10^{-3}$, for NGC 4330, NGC 4522, and NGC 4654, respectively, i.e. up to a factor of 15 less than the values measured in the main body of nearby galaxies. We also find a negative trend in the DGR as a function of the metallicity that can be explained in terms of a dust component more centrally concentrated in more metal-rich systems. Together with the finding that the stripped dust is cold, $T_{d} \lesssim 25\, K$, our results support an outside-in stripping scenario of the galaxy interstellar medium. This study shows that ram pressure stripping is a key mechanism in the building up of the Virgo intra-cluster component injecting dust grains into the ICM, thus contributing to its metal enrichment.

Dates et versions

hal-02990941 , version 1 (05-11-2020)

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Chengze Liu, Patrick Côté, Eric W. Peng, Joel Roediger, Hongxin Zhang, et al.. A Virgo Environmental Survey Tracing Ionised Gas Emission. VESTIGE VIII. Bridging the cluster-ICM-galaxy evolution at small scales. 2020. ⟨hal-02990941⟩
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