Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..418..423y&link_type=abstract
AKARI, a Light to Illuminate the Misty Universe ASP Conference Series, Vol. 418, proceedings of a conference held 16-19 February
Astronomy and Astrophysics
Astronomy
Scientific paper
We have observed the Quintuplet- and Arches-cluster regions with the Fourier Transform Spectrometer (FTS) of the Far-Infrared Surveyor (FIS) onboard AKARI to investigate the physical conditions of the interstellar matter around the clusters. The FIS-FTS mapping data reveal differences in spatial distribution among the far-infrared [O III], [N II], and [C II] line emissions near the Arches-cluster; the emission of an ionic line with a higher ionization potential is distributed closer to the Arches-cluster. This clearly indicates that UV photons from the Arches-cluster are ionizing the surface of nearby molecular clouds and penetrating deeper to dissociate the cloud. We have estimated the effective temperature of the Arches-cluster to be about 34000 K from the ratio of [O III]/[N II] lines. We have also estimated the dust color temperature to be about 30 K from the continuum ratio of 88/122 μm.
Kaneda Hidehiro
Kawada Mitsunobu
Murakami Noriko
Nakagawa Takao
Okada Yasuhiko
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