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Proposal Identification No.:

A2852 Arecibo Observatory

Date Received: 2013-Sep-03 12:31:52 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Sep 1 2013. This proposal has not been submitted before. Proposal Type: General Category: Sub-Category: Observation Category: Time Requested this semester: Hours already used for this pro ject: Additional Hours required to complete pro ject: Minimum Useful Time: Expected Data Storage: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Extragalactic 156

0.75 100-500 GB

A Volume-Limited, Complete View of HI in the z=0 Galaxy Population

To build the first truly complete view of the z=0 galaxy population in full environmental context, we propose to measure the HI content of 123 galaxies needed to complete an 1100-galaxy subvolume of the volume-limited RESOLVE survey. Our A-semester sample builds on our approved B-semester sample by providing better statistical coverage of massive halo environments as well as low-density regimes including coherent large-scale filaments and walls. Unique among local surveys, RESOLVE traces evolutionary processes from dwarf to giant galaxies and across well characterized, broadly representative environments. HI data are essential to core RESOLVE science goals: measuring gas fractions, the baryonic mass function, and HI depletion times, all as a function of galaxy properties/environment. These fundamental constraints on galaxy evolution models depend on robust and complete HI data. The resulting volume-limited HI census will have fantastic legacy value and follow-up potential. Outreach Abstract:

Name Sheila J Kannappan Adam K Leroy

Institution University of North Carolina, Chapel Hill NRAO

E-mail sheila@physics.unc.edu aleroy@nrao.edu

Phone 919-962-3486 434-244-6807

Student no no

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Additional Authors
David Stark (grad) dstark@physics.unc.edu Kathleen Eckert (grad) keckert@physics.unc.edu Linda Watson lwatson@cfa.harvard.edu Kirsten Hall (undergrad) kirstenh@live.unc.edu Erik Hoversten ehoverst@live.unc.edu Ian Dell'Antonio ian@het.brown.edu Andreas Berlind a.berlind@vanderbilt.edu David Guynn (grad) guynn@unc.edu Jonathan Florez (grad) jflorez0206@gmail.com

This work is not part of a thesis.

Remote Observing Request

Observer will travel to AO Remote Observing X In Absentia (instructions to operator)

Section I I - Time Request
The following times are in LST. For these observations night-time is required.

Begin ­ End Interval­Interval 08:45 ­ 11:15 11:15 ­ 13:15 13:15 ­ 14:30 14:30 ­ 15:15

Days Needed at This Interval 8 59 13 2

Time Constraints (Must Be Justified in the Prop osal Text) Due to the low declinations of our sources, requested session intervals must be closely matched to our target RAs. Since this leads to a large number of requested nights, we have developed codes to generate CIMA command-line scripts that can be run by the operator. This allows for more flexible scheduling, and this strategy is currently being employed successfully in our ongoing program a2812.

Section I I I - Instruments Needed
L-wide 2


Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

Section IV - RFI Considerations Frequency Ranges Planned
1385-1401

Section V - Observing List Target List
Target list given at end of scientific justification

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