NOAO >   Observing Info >   Approved Programs >   2019A-0224

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Program Information for 2019A-0224


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: Melinda Townsend, U. of Kansas
CoI: Rebecca Koopmann, Union College
CoI: Pascale Jablonka, Laboratoire d’Astrophysique of EPF de Lausanne
CoI: Gabriella De Lucia, Osservatorio Astronomico di Trieste
CoI: Francoise Combes, Observatoire de Paris
CoI: Gianluca Castignani, Observatoire de Paris
CoI: Dara Norman, NOAO
CoI: Damien Sperone, Laboratoire d’Astrophysique of EPF de Lausanne

Title: Halpha Imaging 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 60 nights spread over three years on the KPNO 0.9-m telescope with the HDI camera to obtain resolved H$alpha$ and $r$-band continuum imaging of 200 galaxies in the filaments surrounding the Virgo cluster. Galaxies are very likely pre-processed in filaments before falling into clusters, and our proposal will help determine where and how this processing 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 for 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 we have already obtained at the IRAM 30-m telescope and HI observations at the Nancay telescope. The combination of ha, CO, and HI 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: Survey

Scheduled Nights:
Run 1 (2019A):  KP-0.9m/HDI -- 20n on Feb 26 - Mar 07 2019, Apr 25 - May 04 2019


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 >   2019A-0224

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