12CO(J=1-0) emission from circumnuclear regions of normal S0 galaxies

Yoshiaki Taniguchi, Takashi Murayama, Naomasa Nakai, Mika Suzuki, Osamu Kameya

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We present results of 12CO(J=1-0) emission-line measurements of 10 optically selected normal S0 galaxies which show little or no optical emission lines in their nuclear regions. The observations include the central 1 kpc diameter. We detected CO emission from six galaxies out of ten. The CO emission was newly detected from one galaxy NGC 7457. The molecular gas mass of the central 1 kpc region of the CO-detected S0 galaxies ranges from 107 to 108. script M sign. The average surface density of molecular gas is 106-7. script M sign kpc-2. Comparing our results with those in literature, we discuss the spatial distribution of the molecular gas and the relationship between the molecular gas content and nuclear activity.

Original languageEnglish
Pages (from-to)468-475
Number of pages8
JournalAstronomical Journal
Volume108
Issue number2
Publication statusPublished - 1994 Aug 1

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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