Stephan's quintet with XMM-Newton

Autor(en): Ginevra Trinchieri, Jack W. Sulentic, Wolfgang Pietsch, Dieter Breitschwerdt
Abstrakt: The prototype compact group known as Stephan's Quintet (SQ) was observed with XMM-Newton in order to complement the excellent resolution of Chandra with high sensitivity to extended emission. SQ is a dynamic environment whose main effect, at both X-ray and optical wavelengths, appears to be ISM stripping. This is manifested by: 1) secular evolution of morphological types towards earlier types and 2) growth of diffuse emission. Virtually all cold, warm, and hot gas in SQ is found outside of the member galaxies. XMM-Newton offers the opportunity to study the hot gas with unprecedented sensitivity. We find two main components: 1) extended high surface brightness emission from shocked gas associated with an ongoing collision and 2) even more extended and unrelaxed diffuse emission that follows the stripped stellar envelope of the group. Œ ESO 2005.
Organisation(en): Institut für Astrophysik
Externe Organisation(en): INAF Osservatorio Astronomico di Brera, University of Alabama, Max-Planck-Institut für extraterrestrische Physik
Journal: Astronomy & Astrophysics
Band: 444
Seiten: 697-710
Anzahl der Seiten: 14
ISSN: 0004-6361
Publikationsdatum: 2005
Peer-reviewed: Ja
ÖFOS 2012: 103003 Astronomie
Link zum Portal: https://ucrisportal.univie.ac.at/de/publications/af6f908d-7951-4656-bc28-537207e64652