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

A. Boselli; M. Fossati; J. C. Cuillandre; S. Boissier; M. Boquien; V. Buat; D. Burgarella; G. Consolandi; L. Cortese; P. Cote; S. Cote; P. Durrell; L. Ferrarese; M. Fumagalli; G. Gavazzi; S. Gwyn; G. Hensler; B. Koribalski; J. Roediger; Y. Roehlly; D. Russeil; M. Sun; E. Toloba; B. Vollmer; A. Zavagno

doi:10.1051/0004-6361/201732410

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

A. Boselli, M. Fossati, J. C. Cuillandre, S. Boissier, M. Boquien, V. Buat, D. Burgarella, G. Consolandi, L. Cortese, P. Cote, S. Cote, P. Durrell, L. Ferrarese, M. Fumagalli, G. Gavazzi, S. Gwyn, G. Hensler, B. Koribalski, J. Roediger, Y. RoehllyD. Russeil, M. Sun, E. Toloba, B. Vollmer, A. Zavagno

International Centre for Radio Astronomy Research (ICRAR)

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31 Citations (Scopus)

Abstract

During pilot observations of the Virgo Environmental Survey Tracing Galaxy Evolution (VESTIGE), a blind narrow-band H alpha + [NII] imaging survey of the Virgo cluster carried out with MegaCam at the CFHT, we have observed the spiral galaxy NGC 4254 (M99). Deep H alpha + [NIT] narrow-band and GALEX UV images reveal the presence of 60 compact (70-500 pc radius) star-forming regions up to similar or equal to 20 kpc 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 280-750 Myr 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 less than or similar to 100 Myr 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.

Original language	English
Article number	A114
Number of pages	16
Journal	Astronomy & Astrophysics
Volume	615
DOIs	https://doi.org/10.1051/0004-6361/201732410
Publication status	Published - 24 Jul 2018

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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., ... Zavagno, A. (2018). A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) III. Star formation in the stripped gas of NGC 4254. Astronomy & Astrophysics, 615, Article A114. https://doi.org/10.1051/0004-6361/201732410

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

abstract = "During pilot observations of the Virgo Environmental Survey Tracing Galaxy Evolution (VESTIGE), a blind narrow-band H alpha + [NII] imaging survey of the Virgo cluster carried out with MegaCam at the CFHT, we have observed the spiral galaxy NGC 4254 (M99). Deep H alpha + [NIT] narrow-band and GALEX UV images reveal the presence of 60 compact (70-500 pc radius) star-forming regions up to similar or equal to 20 kpc 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 280-750 Myr 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 less than or similar to 100 Myr 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.",

keywords = "galaxies: individual: NGC 4254, galaxies: clusters: general, galaxies: clusters: individual: Virgo, galaxies: evolution, galaxies: interactions, galaxies: ISM, SPECTRAL ENERGY-DISTRIBUTION, HERSCHEL REFERENCE SURVEY, ISOLATED HI CLOUDS, FAST-ALPHA SURVEY, RAM-PRESSURE, SPIRAL GALAXY, NEARBY GALAXIES, DISK GALAXIES, CLUSTER GALAXIES, NEUTRAL HYDROGEN",

author = "A. Boselli and M. Fossati and Cuillandre, {J. C.} and S. Boissier and M. Boquien and V. Buat and D. Burgarella and G. Consolandi and L. Cortese and P. Cote and S. Cote and P. Durrell and L. Ferrarese and M. Fumagalli and G. Gavazzi and S. Gwyn and G. Hensler and B. Koribalski and J. Roediger and Y. Roehlly and D. Russeil and M. Sun and E. Toloba and B. Vollmer and A. Zavagno",

year = "2018",

month = jul,

day = "24",

doi = "10.1051/0004-6361/201732410",

language = "English",

volume = "615",

journal = "Astronomy & Astrophysics",

issn = "1432-0746",

publisher = "EDP SCIENCES S A",

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Boselli, A, Fossati, M, Cuillandre, JC, 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 & Zavagno, A 2018, 'A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) III. Star formation in the stripped gas of NGC 4254', Astronomy & Astrophysics, vol. 615, A114. https://doi.org/10.1051/0004-6361/201732410

TY - JOUR

T1 - A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) III. Star formation in the stripped gas of NGC 4254

AU - Boselli, A.

AU - Fossati, M.

AU - Cuillandre, J. C.

AU - Boissier, S.

AU - Boquien, M.

AU - Buat, V.

AU - Burgarella, D.

AU - Consolandi, G.

AU - Cortese, L.

AU - Cote, P.

AU - Cote, S.

AU - Durrell, P.

AU - Ferrarese, L.

AU - Fumagalli, M.

AU - Gavazzi, G.

AU - Gwyn, S.

AU - Hensler, G.

AU - Koribalski, B.

AU - Roediger, J.

AU - Roehlly, Y.

AU - Russeil, D.

AU - Sun, M.

AU - Toloba, E.

AU - Vollmer, B.

AU - Zavagno, A.

PY - 2018/7/24

Y1 - 2018/7/24

N2 - During pilot observations of the Virgo Environmental Survey Tracing Galaxy Evolution (VESTIGE), a blind narrow-band H alpha + [NII] imaging survey of the Virgo cluster carried out with MegaCam at the CFHT, we have observed the spiral galaxy NGC 4254 (M99). Deep H alpha + [NIT] narrow-band and GALEX UV images reveal the presence of 60 compact (70-500 pc radius) star-forming regions up to similar or equal to 20 kpc 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 280-750 Myr 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 less than or similar to 100 Myr 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.

AB - During pilot observations of the Virgo Environmental Survey Tracing Galaxy Evolution (VESTIGE), a blind narrow-band H alpha + [NII] imaging survey of the Virgo cluster carried out with MegaCam at the CFHT, we have observed the spiral galaxy NGC 4254 (M99). Deep H alpha + [NIT] narrow-band and GALEX UV images reveal the presence of 60 compact (70-500 pc radius) star-forming regions up to similar or equal to 20 kpc 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 280-750 Myr 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 less than or similar to 100 Myr 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.

KW - galaxies: individual: NGC 4254

KW - galaxies: clusters: general

KW - galaxies: clusters: individual: Virgo

KW - galaxies: evolution

KW - galaxies: interactions

KW - galaxies: ISM

KW - SPECTRAL ENERGY-DISTRIBUTION

KW - HERSCHEL REFERENCE SURVEY

KW - ISOLATED HI CLOUDS

KW - FAST-ALPHA SURVEY

KW - RAM-PRESSURE

KW - SPIRAL GALAXY

KW - NEARBY GALAXIES

KW - DISK GALAXIES

KW - CLUSTER GALAXIES

KW - NEUTRAL HYDROGEN

U2 - 10.1051/0004-6361/201732410

DO - 10.1051/0004-6361/201732410

M3 - Article

SN - 1432-0746

VL - 615

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

M1 - A114

ER -

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

Abstract

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