Skip navigation
Skip navigation

The metal-enriched outer disk of NGC2915

Werk, J; Putman, Mary E; Meurer, Gerhardt; Thilker, D. A.; Allen, R J; Bland-Hawthorn, Joss; Kravtsov, A; Freeman, Kenneth

Description

We present optical emission-line spectra for outlying H II regions in the extended neutral gas disk surrounding the blue compact dwarf galaxy NGC2915. Using a combination of strong-line R23 and direct oxygen abundance measurements, we report a flat, possibly increasing, metallicity gradient out to 1.2 times the Holmberg radius. We find the outer disk of NGC2915 to be enriched to a metallicity of 0.4 Z. An analysis of the metal yields shows that the outer disk of NGC2915 is overabundant for its...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
URI: http://hdl.handle.net/1885/49828
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/715/1/656

Download

File Description SizeFormat Image
01_Werk_The_metal-enriched_outer_disk_2010.pdf1.04 MBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  20 July 2017/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator