Ha regions in FCC046 and FCC207

Autor(en)

Dolf Michielsen, Sven de Rijcke, Herwig B. Dejonghe, Werner Zeilinger, George K T Hau

Abstrakt

We present deep Ha+[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 Ha 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).

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

University of Nottingham, Ghent University , European Southern Observatory (Germany)

Journal

Astrophysics and Space Science

Band

284

Seiten

635-638

Anzahl der Seiten

4

ISSN

0004-640X

Publikationsdatum

2003

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/1ae7a785-87f9-4a9c-840c-a29f0d34b90a