A massive protostellar core with an infalling envelope
A massive protostellar core with an infalling envelope
复制标题
一个巨大的原恒星核心和一个下落的包膜
DOI：
10.1051/0004-6361:20077197
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发表时间：
2007
影响因子：
6.5
通讯作者：
D. Lemke
中科院分区：
文献类型：
--
作者：
S. Birkmann;O. Krause;M. Hennemann;T. Henning;J. Steinacker;D. Lemke
上下文由于所涉及的时间尺度短和观测困难，我们对大质量星星形成的早期阶段的知识仍然是不完整的。目标。我们的目标是探索高质量星星形成的初始阶段的物理条件，并在早期演化阶段探测真正的大质量（质量M > 8 M？）原星星。方法.我们已经启动了对年轻和大质量恒星形成区域的多波长研究，这些区域是由ISO空间望远镜进行的ISOPHOT偶然巡天（ISOSS）确定的。后续观测包括地面近红外成像和（亚）毫米连续谱和分子谱线测量（单碟和干涉测量），以及斯皮策空间望远镜的中远红外测量。组合的分光光度数据用于确定源温度T和质量M。结果ISOSS J23053+5953是一个大质量（M = 900 M ²，光度L = 2100 L ²）和冷（T = 17 K）的恒星形成区，
Context. Due to the short timescales involved and observational difficulties, our knowledge of the earliest phases of massive star formation remains incomplete. Aims. We aim to explore the physical conditions during the initial phases of high-mass star formation and to detect a genuine massive (mass M > 8 M� ) protostar at an early evolutionary stage. Methods. We have launched a multi-wavelength study of young and massive star-forming regions that were identified by the ISOPHOT Serendipity Survey (ISOSS) performed with the ISO space telescope. The follow-up observations include ground-based near-infrared imaging and (sub)mm continuum and molecular line measurements (both single-dish and interferometric), as well as mid- to far-infrared measurements with the Spitzer Space Telescope. The combined spectrophotometric data are used to determine source temperatures T and masses M. Results. ISOSS J23053+5953 is a massive (M ∼ 900 M� , luminosity L ∼ 2100 L� )a nd cold (T ∼ 17 K) star-forming region with