GBT23B-162

HI-CAVITY - The Atomic Gas Content in Void Galaxies

Abstract

In the HI-CAVITY project we aim to shed light onto the HI properties of void galaxies (VGs). It is built on a large and well selected sample from the CAHA Observatory Legacy project called CAVITY (Calar Alto Void Treasury Integral- field Survey, https://cavity.caha.es), which will allow statistically significant conclusions on the properties of VGs thanks to optical IFU data for 300 VGs. Currently we have observed optical IFU and CO(1-0) emission for 114 galaxies close to the star forming main sequence and with M* > 10^9 Msun. However, after a careful search in the main HI databases, HI data is missing for 60% of them (out of the 40% with data, only 17 detections). Here we aim to observe the missing 60% to have a complete coverage of this sample of star-forming VGs with existing CO data. With this data we will draw conclusions on the neutral gas properties as a function of stellar mass, morphology, void-centric distance, and SF activity, among other properties. We will characterize the atomic gas content and profile asymmetries of VGs, obtain MHI/Mstar, Mmol/MHI, and compare these properties to samples of non-VGs to understand how galaxies evolve in these low density environments.

Investigators

Name	Institution
Daniel Espada *	Center for Astrophysics | Harvard & Smithsonian; Andalucía, Instituto de Astrofísica de; Granada, Universidad de; National Astronomical Observatory of Japan
Pedro Villalba Gonzalez	British Columbia, University of
Isabel Perez	Granada, Universidad de
Simon Verley	Andalucía, Instituto de Astrofísica de; Granada, Universidad de
Ute Lisenfeld	Granada, Universidad de
Jesus Dominguez-Gomez	Granada, Universidad de

* indicates the PI