论文标题
猎户座（Frasco）的Alma碎片源目录I. OMC-2/FIR3，FIR4和FIR5中的嵌入式群集中的流出相互作用
ALMA Fragmented Source Catalogue in Orion (FraSCO) I. Outflow interaction within an embedded cluster in OMC-2/FIR3, FIR4, and FIR5
论文作者
论文摘要
我们提出了1.3毫米连续体（$ = 2---1）行的高角度分辨率（$ \ sim1“ $）和宽场（$ 2'.9..9 \ times 1'.9 $）的图像，Sio（$ J $ = 2---1）和SIO（$ j $ = 5--4）的line排放量是嵌入的protocluster，fir4，fir4，fir4，fir4和fire5，fir4和fire5，fir4和fire5，fir4和fire5，毫米/毫米阵列（ALMA）。 \ Mathrm {M _ {\ odot}} $，290--2000 AU和$ 6.4 \ times 10^{6} $ - $ 3.3 \ times 10^{8} \，\ mathrm {cm^{cm^{-3}} $分别显示$ sims $ sims; $ \ sim15 \，\％$ $ $ $ $提供直接的证据，表明位于FIR3内的HOPS-370驱动的粉尘冷凝，FIR3的能量流出。 $ \ mathrm {n_2h^+} $ line中先前识别的集线器系统。
We present a high angular resolution ($\sim1"$) and wide-field ($2'.9 \times 1'.9$) image of the 1.3-mm continuum, CO($J$ = 2--1) line, and SiO($J$ = 5--4) line emissions toward an embedded protocluster, FIR3, FIR4, and FIR5, in the Orion Molecular Cloud 2 obtained from the Atacama Large Millimeter/submillimeter Array (ALMA). We identify 51 continuum sources, 36 of which are newly identified in this study. Their dust masses, projected sizes, and $\mathrm{H_2}$ gas number densities are estimated to be $3.8 \times 10^{-5}$--$ 1.1 \times 10^{-2} \mathrm{M_{\odot}}$, 290--2000 au, and $6.4 \times 10^{6}$--$3.3 \times 10^{8}\,\mathrm{cm^{-3}}$, respectively. The results of a Jeans analysis show that $\sim80\,\%$ of the protostellar sources and $\sim15\,\%$ of the prestellar sources are gravitationally bound. We identify 12 molecular outflows traced in the CO($J$ = 2--1) emission, six of which are newly detected. We spatially resolve shocked gas structures traced by the SiO($J$ = 5--4) emission in this region for the first time. We identify shocked gas originating from outflows and other shocked regions. These results provide direct evidence of an interaction between a dust condensation, FIR4, and an energetic outflow driven by HOPS-370 located within FIR3. A comparison of the outflow dynamical timescales, fragmentation timescales, and protostellar ages shows that the previously proposed triggered star-formation scenario in FIR4 is not strongly supported. We also discuss the spatial distribution of filaments identified in our continuum image by comparing it with a previously identified hub-fiber system in the $\mathrm{N_2H^+}$ line.
