The Stellar Populations of Stripped Spiral Galaxies in the Virgo Cluster
Hugh H. Crowl, Jeffrey D.P. Kenney (Yale University)

TL;DR
This study investigates the stellar populations of gas-stripped outer disks in Virgo Cluster spiral galaxies, revealing recent quenching of star formation and evidence of diverse stripping locations, challenging static ICM models.
Contribution
It provides new insights into the timing and location of gas stripping in cluster spirals, combining spectroscopy and UV data to analyze star formation history.
Findings
Star formation ended within the last 500 Myr in outer disks.
Half of the galaxies were stripped outside the cluster core.
Stripping timescales align with gas stripping simulations for some galaxies.
Abstract
(Abridged) We present an analysis of the stellar populations of the gas-stripped outer disks of ten Virgo Cluster spiral galaxies, utilizing SparsePak integral field spectroscopy on the WIYN 3.5m telescope and GALEX UV photometry. The galaxies in our sample show evidence for being gas-stripped spiral galaxies, with star formation within a truncation radius, and a passive population beyond the truncation radius. We find that all of the galaxies with spatially truncated star formation have outer disk stellar populations consistent with star formation ending within the last 500 Myr. The synthesis of optical spectroscopy and GALEX observations demonstrate that star formation was relatively constant until the quenching time, after which the galaxies passively evolved. Large starbursts at the time of quenching are excluded for all galaxies. For approximately half of our galaxies, timescales…
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Taxonomy
TopicsAstronomy and Astrophysical Research · Stellar, planetary, and galactic studies · Astronomical Observations and Instrumentation
