A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE). II. Constraining the quenching time in the stripped galaxy NGC 4330
M. Fossati, J.T. Mendel, A. Boselli, J.C. Cuillandre, B. Vollmer, S., Boissier, G. Consolandi, L. Ferrarese, S. Gwyn, P. Amram, M. Boquien, V., Buat, D. Burgarella, L. Cortese, P. Cote, S. Cote, P. Durrell, M. Fumagalli,, G. Gavazzi, J. Gomez-Lopez, G. Hensler, B. Koribalski

TL;DR
This study uses multi-wavelength data and advanced modeling to determine the timeline of gas stripping and star formation quenching in the galaxy NGC 4330, revealing an outside-in quenching pattern caused by ram pressure stripping.
Contribution
It introduces a new Monte Carlo fitting method combining spectroscopy and photometry to reconstruct star formation histories in stripped galaxies.
Findings
Outer regions stripped 500 Myr ago
Inner 5 kpc stripped in last 100 Myr
Ram pressure stripping accelerates galaxy quenching
Abstract
The Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) is a blind narrow-band H+[NII] imaging survey carried out with MegaCam at the CFHT. During pilot observations we have observed NGC 4330, an intermediate mass, edge-on star forming spiral currently falling into the core of the Virgo cluster. New deep observations revealed a low surface brightness 10 kpc tail exhibiting a peculiar filamentary structure. The filaments are remarkably parallel one another and clearly indicate the direction of motion of the galaxy in the Virgo potential. Motivated by the detection of these features, indicating ongoing gas stripping, we collected literature photometry in 15 bands from the far-UV to the far-IR and deep optical long slit spectroscopy using the FORS2 instrument at the ESO Very Large Telescope. Using a newly developed Monte Carlo code that jointly fits spectroscopy and…
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Astronomy and Astrophysical Research · Stellar, planetary, and galactic studies
