HI-mass comparison of nearby galaxies (EBHIS and THINGS)

Details HI-mass comparison of nearby galaxies (EBHIS and THINGS) HI-mass comparison of nearby galaxies (EBHIS and THINGS)

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011yera.confe..25l&link_type=abstract

The 41st Young European Radio Astronomers Conference, held at University of Manchester/Jodrell Bank Observatory, 18-20 July 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

The Effelsberg-Bonn HI Survey (EBHIS) is aiming to map the neutral hydrogen of the full northern hemisphere (Dec > -5 deg). The spectrometers of the 100-m dish cover the Milky Way HI gas and in parallel the extragalactic sky out to a distance of 270 Mpc.
First correlation studies between EBHIS and The HI Nearby Galaxy Survey (THINGS) - performed with the Very Large Array (VLA) - disclose towards some of the galaxies of the studied ensemble a significant discrepancy in the derived HI mass. This discrepancy can be attributed entirely to the lack on information due to "missing spacings" of radio interferometers.
I will briefly present the EBHIS-data-reduction pipeline and motivate further work on the necessity for the combination of single dish and radio interferometric data in order to produce high-quality maps of the gas mass distribution.

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