An Ionization Cone in the Dwarf Starburst Galaxy NGC 5253
dc.contributor.author | Zastrow, Jordan | en_US |
dc.contributor.author | Oey, M. S. | en_US |
dc.contributor.author | Veilleux, Sylvain | en_US |
dc.contributor.author | McDonald, Michael | en_US |
dc.contributor.author | Martin, Crystal L. | en_US |
dc.date.accessioned | 2012-04-06T20:59:37Z | |
dc.date.available | 2012-04-06T20:59:37Z | |
dc.date.issued | 2011 | en_US |
dc.identifier.citation | Zastrow, Jordan; Oey, M. S.; Veilleux, Sylvain; McDonald, Michael; Martin, Crystal L. (2011). "An Ionization Cone in the Dwarf Starburst Galaxy NGC 5253." The Astrophysical Journal Letters, vol. 741, 1, L17. <http://hdl.handle.net/2027.42/90842> | en_US |
dc.identifier.uri | http://stacks.iop.org/2041-8205/741/i=1/a=L17 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/90842 | |
dc.description.abstract | There are few observational constraints on how the escape of ionizing photons from starburst galaxies depends on galactic parameters. Here we report on the first major detection of an ionization cone in NGC 5253, a nearby starburst galaxy. This high-excitation feature is identified by mapping the emission-line ratios in the galaxy using [S III ] _9069, [S II ] _6716, and H_ narrowband images from the Maryland-Magellan Tunable Filter at Las Campanas Observatory. The ionization cone appears optically thin, which suggests the escape of ionizing photons. The cone morphology is narrow with an estimated solid angle covering just 3% of 4π steradians, and the young, massive clusters of the nuclear starburst can easily generate the radiation required to ionize the cone. Although less likely, we cannot rule out the possibility of an obscured active galactic nucleus source. An echelle spectrum along the minor axis shows complex kinematics that are consistent with outflow activity. The narrow morphology of the ionization cone supports the scenario that an orientation bias contributes to the difficulty in detecting Lyman continuum emission from starbursts and Lyman break galaxies. | en_US |
dc.publisher | IOP Publishing | en_US |
dc.title | An Ionization Cone in the Dwarf Starburst Galaxy NGC 5253 | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/90842/1/2041-8205_741_1_L17.pdf | |
dc.identifier.doi | 10.1088/2041-8205-741-1-L17 | en_US |
dc.identifier.source | The Astrophysical Journal Letters | en_US |
dc.owningcollname | Physics, Department of |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.