Candidates for intracluster planetary nebulae in the virgo cluster based on the suprime-cam narrow-band imaging in [O III] and Hα

Sadanori Okamura*, Naoki Yasuda, Magda Arnaboldi, Kenneth C. Freeman, Hiroyasu Ando, Mamoru Doi, Hisanori Furusawa, Ortwin Gerhard, Masaru Hamabe, Masahiko Kimura, Toshitaka Kajino, Yutaka Komiyama, Satoshi Miyazaki, Fumiaki Nakata, Nicola R. Napolitano, Masami Ouchi, Maurilio Pannella, Maki Sekiguchi, Kazuhiro Shimasaku, Masafumi Yagi

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)

    Abstract

    We have identified 38 candidates of intracluster planetary nebulae (ICPNe) in a 34′ 27′ field in the core of the Virgo cluster based on Suprime-Cam imaging through two narrow-band filters centered at redshifted wavelengths of the [O III] λ = 5007 Å and the Hα λ = 6563 Å lines. Broad-band images in the V and R bands are used to check for any emissions in the adjacent continuum. We describe the method briefly and present a list of the intracluster planetary nebula candidates, together with their finding charts. The ICPN candidates show a highly inhomogeneous distribution, which may suggest an association with the M 86-M 84 subcluster. The fraction of diffuse intracluster light with respect to the total light in galaxies is estimated to be about 10%, leading to an estimate of about 20% for the baryon fraction. A spectroscopic follow up and a wider survey are critical to reveal the nature of the intracluster stellar population.

    Original languageEnglish
    Pages (from-to)883-889
    Number of pages7
    JournalPublication of the Astronomical Society of Japan
    Volume54
    Issue number6
    DOIs
    Publication statusPublished - 2002

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