Candidates for Intracluster Planetary Nebulae in the Virgo Cluster based on the Suprime-Cam Narrow-Band Imaging in O[III] and Halpha

Abstract

We have identified 38 candidates of intracluster planetary nebulae (ICPNe) in a $34^{\prime }\times 27^{\prime }$ field in the core of the Virgo cluster based on the Suprime-Cam imaging through two narrow-band filters centered at the redshifted wavelengths of the [OIII]$\lambda =5007\mathring{A}$ and the Halpha λ=6563Ålines. Broad-band images in V and R bands are used to check for any emissions in the adjacent continuum. We describe the method briefly and present the list of intracluster planetary nebulae candidates, together with their finding charts. The ICPN candidates show a highly inhomogeneous distribution, which may suggest an association with the M86-M84 subcluster. Fraction of diffuse intracluster light with respect to total light in galaxies is estimated to be about 10%, leading to an estimate of about 20% for the baryon fraction. Spectroscopic follow up and a wider survey are critical to reveal the nature of intracluster stellar population.

8 pages, 3 figures, in press on PASJ, December 2002

References in corpus (1)

• Subaru Prime Focus Camera -- Suprime-Cam --

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