THE MULTIPLE PRE-MAIN-SEQUENCE SYSTEM HBC 515 IN L1622
THE MULTIPLE PRE-MAIN-SEQUENCE SYSTEM HBC 515 IN L1622
复制标题
L1622 中的多个前置主序列系统 HBC 515
DOI：
10.1088/0004-6256/139/4/1668
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
C. Aspin
中科院分区：
文献类型：
--
作者：
B. Reipurth;G. Herbig;C. Aspin
位于猎户座 L1622 彗星云中的明亮前主序星 HBC 515 (HD 288313) 已通过光学/红外成像和紫外/光学/红外光谱进行了广泛研究。光谱表明 HBC 515 是一颗光谱类型 K2V 的弱线金牛座 T 星 (TTS)。 K 波段的自适应光学成像表明，HBC 515 是一个双星，具有两个间隔 0.''5 的同样明亮的分量。在西北 5 英寸处发现了非常微弱的第三个成分。 Spitzer IRAC 和 MIPS 观测表明，在中红外波长下，第三个光源在系统中占主导地位，表明它是一颗仍嵌入 HBC 515 新生云中的原恒星。弱线 TTS 与多系统中新生原恒星的密切联系值得注意。两个附近的 TTS 可能与 HBC 515 多重系统相关，并且考虑了导致这种配置的综合体的动态演化。
The bright pre-main-sequence star HBC 515 (HD 288313) located in the L1622 cometary cloud in Orion has been studied extensively with optical/infrared imaging and ultraviolet/optical/infrared spectroscopy. The spectra indicate that HBC 515 is a weakline T Tauri star (TTS) of spectral type K2V. Adaptive optics imaging in the K band reveals that HBC 515 is a binary with two equally bright components separated by 0.″5. A very faint third component is found 5″ to the northwest. Spitzer IRAC and MIPS observations show that at mid-infrared wavelengths this third source dominates the system, suggesting that it is a protostar still embedded in the nascent cloud of HBC 515. The close association of a weakline TTS with a newborn protostar in a multiple system is noteworthy. Two nearby TTSs are likely associated with the HBC 515 multiple system, and the dynamical evolution of the complex that would lead to such a configuration is considered.