Probing the History of Cluster Assembly by Intracluster Planetary Nebulae

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dc.creatorOkamura, Sadanori
dc.date2008-03-28
dc.date2008-04-10
dc.date.accessioned2026-07-07T09:31:15Z
dc.date.available2026-07-07T09:31:15Z
dc.descriptionWe describe the results and the current status of our program to search for intracluster planetary nebulae (ICPNe) in the Virgo and the Coma clusters of galaxies. For the Virgo cluster, ICPNe candidates were detected with narrow band imaging combined with broad band imaging. The use of two narrow band filters for H$α$ and [O III] lines tuned for the cluster redshift enabled us to detect secure ICPNe candidates. Kinematics of the detected ICPNe confirm that the Virgo cluster is in a highly unrelaxed state. In order to detect ICPNe in the Coma cluster, which is more than five times more distant than the Virgo cluster, we devised a multi-slit imaging spectroscopy technique and successfully detected 35 secure ICPNe candidates for the first time in this cluster. We have found a hint that the Coma cluster is currently in the midst of a subcluster merger.
dc.description8 pages, 5 figures, to appear in the proceedings of "Panoramic Views of Galaxy Formation and Evolution", 1st Subaru International Conference held in Hayama, Japan 11-16 December 2007 Corrections for references
dc.identifierhttps://arxiv.org/abs/0803.4077
dc.identifierhttp://arxiv.org/abs/0803.4077
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158392
dc.subjectAstrophysics
dc.titleProbing the History of Cluster Assembly by Intracluster Planetary Nebulae
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