Imaging study of NGC 3372, the Carina nebula – III. The properties of G287.47−0.54 (Tr 14-N4), an embedded young cluster and its associated H2 emission
Imaging study of NGC 3372, the Carina nebula – III. The properties of G287.47−0.54 (Tr 14-N4), an embedded young cluster and its associated H2 emission
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NGC 3372（船底座星云）的成像研究 – III 嵌入式年轻星云 G287.47−0.54 (Tr 14-N4) 的特性及其相关的 H2 发射
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发表时间：
2011
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影响因子：
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通讯作者：
P. Persi
中科院分区：
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作者：
M. Tapia;M. Roth;J. Bohigas;P. Persi
本文介绍了巴德麦哲伦望远镜拍摄的中红外源G287.47−0.54（Tr 14-N4）的新的深宽波段和窄波段（2.17 µm处的JHK和Br γ以及2.12µm处的H2）近红外（近红外）图像，并与3.6-8µm斯皮策存档图像一起进行了沿着分析。这些数据的分析表明，存在一个紧凑的（r = 23 arcsec，0.3 pc），嵌入式IR集群至少有72个年轻的成员。星团的颜色星等图显示其年龄约为10 5年，这与发现的大部分（≥ 32%）嵌入源在λ> 2µm处显示出显著的过量发射相一致。两个最年轻和最明亮的光源位于星系团核心附近。它们的光谱能量分布（SED）的性质表明，它们是I类年轻的
New deep broad- and narrow-band (JHK and Br γ at 2.17 µm and H2 at 2.12µm) nearinfrared (near-IR) images of the mid-IR source G287.47−0.54 (Tr14-N4) taken with the Baade Magellan telescope are presented and analysed along with archive 3.6–8µm Spitzer images. The analysis of these data demonstrates the presence of a compact (r ∼ 23 arcsec, 0.3 pc), embedded IR cluster with at least 72 young members. The colour–magnitude diagram of the cluster suggests an age of approximately 10 5 years, consistent with the large fraction (≥32 per cent) of embedded sources found to show significant excess emission at λ> 2µm. The two youngest and most luminous sources are located close to the cluster nucleus. The properties of their spectral energy distributions (SEDs) indicate that these are Class I young