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hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorBOSELLI, A.
hal.structure.identifierInstitute for Computational Cosmology [ICC]
dc.contributor.authorFOSSATI, M.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorLONGOBARDI, A.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorBOISSIER, S.
hal.structure.identifierUniversidad Católica del Norte [Antofagasta]
dc.contributor.authorBOQUIEN, M.
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorBRAINE, J.
hal.structure.identifierNRC Herzberg Institute of Astrophysics
dc.contributor.authorCÔTÉ, P.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorCUILLANDRE, J. C.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorEPINAT, B.
hal.structure.identifierNRC Herzberg Institute of Astrophysics
dc.contributor.authorFERRARESE, L.
hal.structure.identifierUniversità degli Studi di Milano-Bicocca = University of Milano-Bicocca [UNIMIB]
dc.contributor.authorGAVAZZI, G.
hal.structure.identifierNRC Herzberg Institute of Astrophysics
dc.contributor.authorGWYN, S.
hal.structure.identifierUniversity of Vienna [Vienna]
dc.contributor.authorHENSLER, G.
hal.structure.identifierUniversidade Estadual De Santa Cruz [Brazil] [UESC]
dc.contributor.authorPLANA, H.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorROEHLLY, Y.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorSCHIMD, C.
hal.structure.identifierUniversity of Alabama in Huntsville [UAH]
dc.contributor.authorSUN, M.
hal.structure.identifierINAF - Osservatorio Astronomico di Brera [OAB]
dc.contributor.authorTRINCHIERI, G.
dc.date.accessioned2021-07-07T15:45:51Z
dc.date.available2021-07-07T15:45:51Z
dc.date.issued2020-02
dc.identifier.issn0004-6361
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/95292
dc.description.abstractEnThe Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) is a blind narrow-band Hα + [NII] imaging survey of the Virgo cluster carried out with MegaCam at the Canada-French-Hawaii telescope. We use a new set of data extracted from VESTIGE to study the impact of the hostile cluster environment on the star formation process down to the scale of HII regions (∼50 pc). Here, HII regions are identified and their parameters measured using the HIIPHOT code on a sample of 114 late-type galaxies spanning a wide range in morphological type (Sa-Sd, Im, BCD), stellar mass (106.5 ≤ Mstar ≤ 1011 M⊙), and star formation activity (10−3 ≤ SFR ≤ 10 M⊙ yr−1). Owing to the exquisite average resolution of the VESTIGE data (0.65 arcsec), we detect 11302 HII regions with an Hα luminosity L(Hα) ≥ 1037 erg s−1. We show that the typical number of HII regions in gas-stripped objects is significantly lower than in healthy late-types of similar stellar mass. We also show that in these gas-stripped galaxies the number of HII regions significantly drops outside the effective radius, suggesting that the quenching process occurs outside-in, in agreement with other multifrequency observations. These new results consistently confirm that the main mechanism responsible for the decrease of the star formation activity observed in cluster galaxies is ram pressure, allowing us to discard other milder processes such as starvation or strangulation, which are unable to reproduce the observed radially truncated profiles.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.engalaxies: star clusters: general
dc.subject.engalaxies: clusters: general
dc.subject.engalaxies: clusters: individual: Virgo
dc.subject.engalaxies: star formation
dc.subject.enHII regions
dc.title.enA Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE)
dc.title.enVI. Environmental quenching on HII-region scales
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201937310
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.description.sponsorshipEuropeMajor:The Narrative Theatre - A Creativity Enhancement Environment
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageL1
bordeaux.volume634
bordeaux.hal.laboratoriesLaboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifiercea-02460194
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//cea-02460194v1
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