NOAO >   Observing Info >   Approved Programs >   2017A-0354

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Program Information for 2017A-0354


PI: Rose Finn, Siena College, rfinn@siena.edu
Address: Physics Department, 515 Loudon Rd, Loudonville, NY 12211 USA

CoI: Gregory Rudnick, U. of Kansas
CoI: Vandana Desai, IPAC
CoI: Pascale Jablonka, Ecole polytechnique federale de Lausanne

Title: Probing Gas Stripping with Resolved Star-Formation Maps of Virgo Filament Galaxies

Abstract: We are conducting a multi-wavelength study of galaxies at a variety of positions in the cosmic web surrounding the Virgo cluster, one of the best studied regions of high density in the Universe. We request 6 nights on the KPNO 0.9-m telescope with the HDI camera to obtain resolved H$alpha$ and r-band continuum imaging of 20 galaxies along the North-East filament that extends up to seven virial radii from the center of the Virgo. Galaxies are very likely pre-processed in filaments before falling into clusters, and our proposal will help determine where and how this process takes place. The H$alpha$ imaging will provide resolved star formation maps, while the deep r-band imaging will trace the stellar disk as well as provide continuum subtraction. We will determine the extent and asymmetry of the ha and stellar disks to look for signatures of gas depletion and stripping. In addition, we will characterize the molecular gas content of these galaxies using CO (2-1) and (1-0) observations that are currently underway at the IRAM 30-m telescope. The combination of ha and CO observations will allow us to calculate gas consumption timescales, characterize multiple phases of the galactic gas, and look for signatures of environmentally-driven depletion. Our goal is to understand how galaxies are altered as they move through the cosmic web and enter the densest regions.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2017A):  KP-0.9m/HDI -- 6n on May 19 - May 24 2017


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2017A-0354

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