Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Choirs, HI galaxy groups: Catalogue and detection of star-forming dwarf group members
Monthly Notices of the Royal Astronomical Society, Volume 433, No. 1, Year 2013
Notification
URL copied to clipboard!
Description
Hα observations centred on galaxies selected from the HI Parkes All-Sky Survey (HIPASS)typically show one and sometimes two star-forming galaxies within the ~15 arcmin beam of the Parkes 64 m HI detections. In our Survey for Ionization in Neutral Gas Galaxies (SINGG)we found 15 cases of HIPASS sources containing four or more emission line galaxies (ELGs). We name these fields Choir groups. In the most extreme case, we found a field with at least nine ELGs. In this paper, we present a catalogue of Choir group members in the context of the wider SINGG sample. The dwarf galaxies in the Choir groups would not be individually detectable in HIPASS at the observed distances if they were isolated, but are detected in SINGG narrow-band imaging due to their membership of groups with sufficiently large total HI mass. The ELGs in these groups are similar to the wider SINGG sample in terms of size, Hα equivalent width and surface brightness. Eight of these groups have two large spiral galaxies with several dwarf galaxies and may be thought of as morphological analogues of the Local Group. However, on average our groups are not significantly HI deficient, suggesting that they are at an early stage of assembly, and more like the M81 group. The Choir groups are very compact at typically only 190 kpc in projected distance between the two brightest members. They are very similar to SINGG fields in terms of star formation efficiency (SFE; the ratio of star formation rate to HI mass), showing an increasing trend in SFE with stellar mass. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
Authors & Co-Authors
Sweet, Sarah M.
Australia, Brisbane
The University of Queensland
Meurer, Gerhardt R.
Australia, Perth
The University of Western Australia
Australia, Perth
International Centre for Radio Astronomy Research
Drinkwater, Michael J.
Australia, Brisbane
The University of Queensland
Kilborn, Virginia A.
Australia, Hawthorn
Swinburne University of Technology
Dénes, Helga
Australia, Hawthorn
Swinburne University of Technology
Bekki, Kenji
Australia, Perth
The University of Western Australia
Australia, Perth
International Centre for Radio Astronomy Research
Hanish, Daniel J.
United States, Pasadena
California Institute of Technology
Ferguson, Henry C.
United States, Baltimore
Space Telescope Science Institute
Knezek, Patricia M.
Unknown Affiliation
Bland-Hawthorn, Joss
Australia, Sydney
The University of Sydney
Dopita, Michael A.
Australia, Canberra
The Australian National University
Doyle-Pegg, Marianne T.
Australia, Brisbane
The University of Queensland
Elson, Edward C.
Australia, Perth
The University of Western Australia
Australia, Perth
International Centre for Radio Astronomy Research
Freeman, Kenneth C.
Australia, Canberra
The Australian National University
Heckman, Timothy M.
United States, Pasadena
California Institute of Technology
Kennicutt, Robert C.
United Kingdom, Cambridge
University of Cambridge
United States, Tucson
The University of Arizona
Kim, Jihoon
South Korea, Seoul
Seoul National University
Koribalski, Baerbel S.
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Meyer, Martin J.
Australia, Perth
The University of Western Australia
Australia, Perth
International Centre for Radio Astronomy Research
Putman, Mary E.
United States, Ann Arbor
University of Michigan, Ann Arbor
Ryan-Weber, Emma V.
United Kingdom, Cambridge
University of Cambridge
Smith, Chris
Chile, La Serena
Cerro Tololo Inter American Observatory
Staveley-Smith, L.
Australia, Perth
The University of Western Australia
Australia, Perth
International Centre for Radio Astronomy Research
Wong, O. Ivy
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Webster, Rachel L.
Australia, Melbourne
University of Melbourne
Werk, Jessica K.
United States, Ann Arbor
University of Michigan, Ann Arbor
Zwaan, Martin A.
Germany, Garching Bei Munchen
European Southern Observatory
Statistics
Citations: 9
Authors: 27
Affiliations: 16
Identifiers
Doi:
10.1093/mnras/stt747
ISSN:
00358711
Research Areas
Environmental
Study Design
Cross Sectional Study
Study Approach
Quantitative