Integral field spectroscopy of massive young stellar objects in the N113 H ii region in the Large Magellanic Cloud-猫眼课题宝

大麦哲伦星云 N113 H ii 区域大质量年轻恒星的积分场光谱

DOI：

10.1093/mnras/stv2424

发表时间：

2015

期刊：

Monthly Notices of the Royal Astronomical Society

影响因子：

4.8

通讯作者：

中科院分区：

物理与天体物理2区

文献类型：

作者：

J. Ward;Joana M. Oliveira;J. V. Loon;M. Sewiło;M. Sewiło

\textit{Spitzer} SAGE 巡天能够识别和分析大麦哲伦星云（LMC）中年轻恒星天体（YSO）候选者的重要样本。然而，\textit{Spitzer} 的角分辨率相对较差，这意味着在 LMC 的距离处，很可能许多 \textit{Spitzer} YSO 候选者实际上包含多个分量。我们使用 VLT/SINFONI 对 N113 H\,{\sc ii} 区域中三个最突出的大质量 YSO 候选者进行了高分辨率 \textit{K} 波段积分场光谱观测。我们已经在三个 \textit{Spitzer} 源中识别出六个 \textit{K} 带连续谱源，并绘制了这些源周围延长线发射的形态和速度场。 Br$\gamma$、He\,{\sc i} 和 H$_2$ 发射位于所有六个 \textit{K} 波段源的位置；我们讨论排放是否与连续源相关或是否是环境排放。 H$_2$ 排放似乎主要是环境排放，没有发现 YSO 圆盘中产生 CO 排放的证据。我们绘制了扩展的 Br$\gamma$ 发射和 He {\sc i} 发射的质心速度，并发现了两个扩展的紧凑 H\,{\sc ii} 区域的证据。一个来源显示紧凑且强烈的 H$_2$ 发射表明分子流出。观察到的光谱特性的多样性是在与大质量恒星形成相关的一系列演化阶段的背景下解释的。

The \textit{Spitzer} SAGE survey has allowed the identification and analysis of significant samples of Young Stellar Object (YSO) candidates in the Large Magellanic Cloud (LMC). However the angular resolution of \textit{Spitzer} is relatively poor meaning that at the distance of the LMC, it is likely that many of the \textit{Spitzer} YSO candidates in fact contain multiple components. We present high resolution \textit{K}-band integral field spectroscopic observations of the three most prominent massive YSO candidates in the N113 H\,{\sc ii} region using VLT/SINFONI. We have identified six \textit{K}-band continuum sources within the three \textit{Spitzer} sources and we have mapped the morphology and velocity fields of extended line emission around these sources. Br$\gamma$, He\,{\sc i} and H$_2$ emission is found at the position of all six \textit{K}-band sources; we discuss whether the emission is associated with the continuum sources or whether it is ambient emission. H$_2$ emission appears to be mostly ambient emission and no evidence of CO emission arising in the discs of YSOs has been found. We have mapped the centroid velocities of extended Br$\gamma$ emission and He {\sc i} emission and found evidence of two expanding compact H\,{\sc ii} regions. One source shows compact and strong H$_2$ emission suggestive of a molecular outflow. The diversity of spectroscopic properties observed is interpreted in the context of a range of evolutionary stages associated with massive star formation.

THE RED MSX SOURCE SURVEY: THE MASSIVE YOUNG STELLAR POPULATION OF OUR GALAXY

DOI： 10.1088/0067-0049/208/1/11

发表时间： 2013-08

期刊：

The Astrophysical Journal Supplement Series

影响因子： --

作者：

S. Lumsden;M. Hoare;J. Urquhart;R. Oudmaijer;B. Davies;J. Mottram;H. Cooper;T. U. O. Leeds;Leeds;Uk;Max Planck Institut fur Radioastronomie;Bonn;Germany;A. R. Institute;Liverpool John Moores University;Liverpool;L. Observatory;Leiden University;Leiden;The Netherlands

通讯作者：

SPITZER SURVEY OF THE LARGE MAGELLANIC CLOUD, SURVEYING THE AGENTS OF A GALAXY'S EVOLUTION (SAGE). IV. DUST PROPERTIES IN THE INTERSTELLAR MEDIUM

DOI： 10.1088/0004-6256/136/3/919

发表时间： 2005-06

期刊：

The Astronomical Journal

影响因子： --

作者：

M. Meixner;K. Gordon;R. Indebetouw;J. Hora;B. Whitney;R. Blum;W. Reach;J. Bernard;M. Meade;B. Babler;C. Engelbracht;B. For;K. Misselt;U. Vijh;C. Leitherer;M. Cohen;E. Churchwell;F. Boulanger;J. Frogel;Y. Fukui;J. Gallagher;V. Gorjian;J. Harris;D. Kelly;A. Kawamura;Soyoung Kim;W. Latter;S. Madden;Ciska Markwick-Kemper;A. Mizuno;N. Mizuno;J. Mould;A. Nota;M. Oey;K. Olsen;T. Onishi;R. Paladini;N. Panagia;P. Pérez-González;H. Shibai;Sato Shuji;Linda J. Smith;L. Staveley-Smith;A. Tielens;T. Ueta;S. V. Dyk;K. Volk;M. Werner;D. Zaritsky

通讯作者：

Integral field spectroscopy of massive young stellar objects in the N113 H ii region in the Large Magellanic Cloud

大麦哲伦星云 N113 H ii 区域大质量年轻恒星的积分场光谱

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