H alpha regions in FCC046 and FCC207

Search Swinburne Research Bank

Home

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/55693

Title: H alpha regions in FCC046 and FCC207
Author(s): Michielsen, Dolf; De Rijcke, Sven; Dejonghe, Herwig B.; Zeilinger, Werner W.; Hau, G. K. T.
Abstract: We present deep Hα+[NII] narrowband imaging of FCC046 and FCC207, two dwarf ellipticals (dEs) in the Fornax Cluster. Although one does not expect much of an interstellar medium (ISM) to be present in dEs, FCC207 shows a central emission region, whereas FCC046 also contains fainter emission regions. The central emission can be explained as photo-ionization by post-AGB stars. Some of the emission clouds in FCC046 are resolved and have diameters of the order of 50-150 pc and Hα luminosities of 1030 W, comparable to supernova remnants (SNRs), pointing to recent star formation. Dwarfs like FCC046 could be the evolutionary link between normal, quiescent dEs and more vigorously starforming blue compact dwarfs (BCDs).
Publication type: Journal article
Source: Astrophysics and Space Science, Vol. 284, no. 2 (Apr 2003), pp. 635-638
Publication year: 2003
FOR Code(s): 0201 Astronomical and Space Sciences
Keyword(s): Dwarf galaxies; FCC046; FCC207; ISM supernova remnants
Publisher: Springer
ISSN: 0004-640X
Publisher URL: http://dx.doi.org/10.1023/A:1024030711455
Peer reviewed