AKARI far-infrared spectroscopic observations of the galactic center region

Akiko Yasuda; Hidehiro Kaneda; Takao Nakagawa; Yoko Okada; Mitsnobu Kawada; Noriko Murakami; Hidenori Takahashi; Takafumi Ootsubo

doi:10.1093/pasj/61.3.511

AKARI far-infrared spectroscopic observations of the galactic center region

Akiko Yasuda, Hidehiro Kaneda, Takao Nakagawa, Yoko Okada, Mitsnobu Kawada, Noriko Murakami, Hidenori Takahashi, Takafumi Ootsubo

研究成果: Article › 査読

4 被引用数 (Scopus)

抄録

We have observed the Quintuplet- and Arches-cluster regions with the Fourier Transform Spectrometer (FTS) of the Far-Infrared Surveyor (FIS) aboard AKARI to investigate the physical conditions of interstellar matter around the clusters. The FIS-FTS mapping data reveal differences in the spatial distribution among the far-infrared [O III], [N II], and [CII] 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 the [O III]/[N II] lines.

本文言語	English
ページ（範囲）	511-520
ページ数	10
ジャーナル	Publications of the Astronomical Society of Japan
巻	61
号	3
DOI	https://doi.org/10.1093/pasj/61.3.511
出版ステータス	Published - 2009
外部発表	はい

ASJC Scopus subject areas

天文学と天体物理学
宇宙惑星科学

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10.1093/pasj/61.3.511

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title = "AKARI far-infrared spectroscopic observations of the galactic center region",

abstract = "We have observed the Quintuplet- and Arches-cluster regions with the Fourier Transform Spectrometer (FTS) of the Far-Infrared Surveyor (FIS) aboard AKARI to investigate the physical conditions of interstellar matter around the clusters. The FIS-FTS mapping data reveal differences in the spatial distribution among the far-infrared [O III], [N II], and [CII] 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 the [O III]/[N II] lines.",

keywords = "Galaxy: center, ISM: H II regions, ISM: general, Infrared: ISM",

author = "Akiko Yasuda and Hidehiro Kaneda and Takao Nakagawa and Yoko Okada and Mitsnobu Kawada and Noriko Murakami and Hidenori Takahashi and Takafumi Ootsubo",

year = "2009",

doi = "10.1093/pasj/61.3.511",

language = "English",

volume = "61",

pages = "511--520",

journal = "Publications of the Astronomical Society of Japan",

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publisher = "Astronomical Society of Japan",

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TY - JOUR

T1 - AKARI far-infrared spectroscopic observations of the galactic center region

AU - Yasuda, Akiko

AU - Kaneda, Hidehiro

AU - Nakagawa, Takao

AU - Okada, Yoko

AU - Kawada, Mitsnobu

AU - Murakami, Noriko

AU - Takahashi, Hidenori

AU - Ootsubo, Takafumi

PY - 2009

Y1 - 2009

N2 - We have observed the Quintuplet- and Arches-cluster regions with the Fourier Transform Spectrometer (FTS) of the Far-Infrared Surveyor (FIS) aboard AKARI to investigate the physical conditions of interstellar matter around the clusters. The FIS-FTS mapping data reveal differences in the spatial distribution among the far-infrared [O III], [N II], and [CII] 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 the [O III]/[N II] lines.

AB - We have observed the Quintuplet- and Arches-cluster regions with the Fourier Transform Spectrometer (FTS) of the Far-Infrared Surveyor (FIS) aboard AKARI to investigate the physical conditions of interstellar matter around the clusters. The FIS-FTS mapping data reveal differences in the spatial distribution among the far-infrared [O III], [N II], and [CII] 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 the [O III]/[N II] lines.

KW - Galaxy: center

KW - ISM: H II regions

KW - ISM: general

KW - Infrared: ISM

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U2 - 10.1093/pasj/61.3.511

DO - 10.1093/pasj/61.3.511

M3 - Article

AN - SCOPUS:68949085445

SN - 0004-6264

VL - 61

SP - 511

EP - 520

JO - Publications of the Astronomical Society of Japan

JF - Publications of the Astronomical Society of Japan

IS - 3

ER -

AKARI far-infrared spectroscopic observations of the galactic center region

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