Kavli Affiliate: Ran Wang
| First 5 Authors: Yun Zheng, Jing Wang, Judith Irwin, Jayanne English, Qingchuan Ma
| Summary:
We present the HI distribution of galaxies from the Continuum Halos in Nearby
Galaxies – an EVLA Survey (CHANG-ES). Though the observational mode was not
optimized for detecting HI, we successfully produce HI cubes for 19 galaxies.
The moment-0 maps from this work are available on CHANG-ES data release
website, i.e., https://www.queensu.ca/changes. Our sample is dominated by
star-forming, HI-rich galaxies at distances from 6.27 to 34.1 Mpc. HI
interferometric images on two of these galaxies (NGC 5792 and UGC 10288) are
presented here for the first time, while 12 of our remaining sample galaxies
now have better HI spatial resolutions and/or sensitivities of intensity maps
than those in existing publications. We characterize the average scale heights
of the HI distributions for a subset of most inclined galaxies (inclination >
80 deg), and compare them to the radio continuum intensity scale heights, which
have been derived in a similar way. The two types of scale heights are well
correlated, with similar dependence on disk radial extension and star formation
rate surface density but different dependence on mass surface density. This
result indicates that the vertical distribution of the two components may be
governed by similar fundamental physics but with subtle differences.
| Search Query: ArXiv Query: search_query=au:”Ran Wang”&id_list=&start=0&max_results=10