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  1. I200 高等研究院
  2. I200a 雑誌掲載論文
  3. 学術雑誌

ALMA CO Observations of Supernova Remnant N63A in the Large Magellanic Cloud: Discovery of Dense Molecular Clouds Embedded within Shock-ionized and Photoionized Nebulae

http://hdl.handle.net/2237/00030428
http://hdl.handle.net/2237/00030428
a31c13f2-b03d-4672-97e5-e347e0fa15ec
名前 / ファイル ライセンス アクション
Sano_2019_ApJ_873_40.pdf Sano_2019_ApJ_873_40 (9.3 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2019-06-13
タイトル
タイトル ALMA CO Observations of Supernova Remnant N63A in the Large Magellanic Cloud: Discovery of Dense Molecular Clouds Embedded within Shock-ionized and Photoionized Nebulae
言語 en
著者 Sano, H.

× Sano, H.

WEKO 91936

en Sano, H.

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Matsumura, H.

× Matsumura, H.

WEKO 91937

en Matsumura, H.

Search repository
Nagaya, T.

× Nagaya, T.

WEKO 91938

en Nagaya, T.

Search repository
Yamane, Y.

× Yamane, Y.

WEKO 91939

en Yamane, Y.

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Alsaberi, R. Z. E.

× Alsaberi, R. Z. E.

WEKO 91940

en Alsaberi, R. Z. E.

Search repository
Filipović, M. D.

× Filipović, M. D.

WEKO 91941

en Filipović, M. D.

Search repository
Tachihara, K.

× Tachihara, K.

WEKO 91942

en Tachihara, K.

Search repository
Fujii, K.

× Fujii, K.

WEKO 91943

en Fujii, K.

Search repository
Tokuda, K.

× Tokuda, K.

WEKO 91944

en Tokuda, K.

Search repository
Tsuge, K.

× Tsuge, K.

WEKO 91945

en Tsuge, K.

Search repository
Yoshiike, S.

× Yoshiike, S.

WEKO 91946

en Yoshiike, S.

Search repository
Onishi, T.

× Onishi, T.

WEKO 91947

en Onishi, T.

Search repository
Kawamura, A.

× Kawamura, A.

WEKO 91948

en Kawamura, A.

Search repository
Minamidani, T.

× Minamidani, T.

WEKO 91949

en Minamidani, T.

Search repository
Mizuno, N.

× Mizuno, N.

WEKO 91950

en Mizuno, N.

Search repository
Yamamoto, H.

× Yamamoto, H.

WEKO 91951

en Yamamoto, H.

Search repository
Inutsuka, S.

× Inutsuka, S.

WEKO 91952

en Inutsuka, S.

Search repository
Inoue, T.

× Inoue, T.

WEKO 91953

en Inoue, T.

Search repository
Maxted, N.

× Maxted, N.

WEKO 91954

en Maxted, N.

Search repository
Rowell, G.

× Rowell, G.

WEKO 91955

en Rowell, G.

Search repository
Sasaki, M.

× Sasaki, M.

WEKO 91956

en Sasaki, M.

Search repository
Fukui, Y.

× Fukui, Y.

WEKO 91957

en Fukui, Y.

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 © 2019. The American Astronomical Society
キーワード
主題Scheme Other
主題 cosmic rays
キーワード
主題Scheme Other
主題 ISM: clouds
キーワード
主題Scheme Other
主題 ISM: individual objects (LHA 120-N 63A)
キーワード
主題Scheme Other
主題 ISM: supernova remnants
キーワード
主題Scheme Other
主題 photon-dominated region (PDR)
抄録
内容記述 We carried out new 12CO(J = 1–0, 3–2) observations of a N63A supernova remnant (SNR) from the LMC using the Atacama Large Millimeter/submillimeter Array (ALMA) and Atacama Submillimeter Telescope Experiment. We find three giant molecular clouds toward the northeast, east, and near the center of the SNR. Using the ALMA data, we spatially resolved clumpy molecular clouds embedded within the optical nebulae in both the shock-ionized and photoionized lobes discovered by previous Hα and [S ii] observations. The total mass of the molecular clouds is ~800 M ☉ for the shock-ionized region and ~1700 M ☉ for the photoionized region. Spatially resolved X-ray spectroscopy reveals that the absorbing column densities toward the molecular clouds are ~(1.5–6.0) × 10^21 cm^−2, which are ~1.5–15 times less than the averaged interstellar proton column densities for each region. This means that the X-rays are produced not only behind the molecular clouds, but also in front of them. We conclude that the dense molecular clouds have been completely engulfed by the shock waves, but have still survived erosion owing to their high density and short interacting time. The X-ray spectrum toward the gas clumps is well explained by an absorbed power-law model or a high-temperature plasma model, in addition to thermal plasma components, implying that the shock-cloud interaction is efficiently working for both cases through the shock ionization and magnetic field amplification. If the hadronic gamma-ray is dominant in the GeV band, the total energy of the cosmic-ray protons is calculated to be ~(0.3–1.4) × 10^49 erg, with an estimated interstellar proton density of ~190±90cm^−3, containing both the shock-ionized gas and neutral atomic hydrogen.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 IOP publishing
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.3847/1538-4357/ab02fd
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 1538-4357
書誌情報 en : The Astrophysical Journal

巻 873, 号 1, p. 40, 発行日 2019-03
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