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titleLuminosity and Dust Mass Functions of Galaxy Clusters
Author(eng)Davies, Jonathan I.
Author Affiliation(eng)Cardiff University
Issue Date2018-03-09
PublisherJapan Aerospace Exploration Agency (JAXA)
宇宙航空研究開発機構(JAXA)
Publication titleJAXA Special Publication: Proceedings of the SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe
宇宙航空研究開発機構特別資料
VolumeJAXA-SP-17-010E
Start page67
End page70
Publication date2018-03-09
Languageeng
AbstractWe have been using Herschel data at 100-500 micro m to study the far-infrared luminosity functions of Virgo, Coma and Fornax cluster galaxies and to compare them to those of field galaxies. We show that the Virgo cluster lacks the very bright and the numerous faint sources detected in other surveys of the general field carried out by both Herschel and Planck (typically a luminosity function faint end slope of -1.0 compared to -1.5). We fit the far-infrared spectral energy distributions using a fixed (β= 2) emissivity index to obtain dust masses and temperatures. The dust mass function has a similar shape to that of the field, so the disparity in cluster and field galaxy luminosity functions must be due to different dust temperatures not different quantities of dust. The Virgo cluster is over dense in dust by about a factor of 100 compared to the field.
DescriptionMeeting Information: SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe (June 18-21, 2013. Ito Hall, the University of Tokyo), Bunkyou-ku, Tokyo, Japan
Physical characteristics: Original contains color illustrations
形態: カラー図版あり
Document TypeConference Paper
JAXA Category特別資料
NASA Subject CategoryAstronomy
ISSN(online)2433-2232
SHI-NOAA1730027013
Report NoJAXA-SP-17-010E
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/877799


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