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1.64 ${mu}m$ features of Jets and Outflows from Young Stellar Objects in the Carina Nebula
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  • 1.64 ${mu}m$ features of Jets and Outflows from Young Stellar Objects in the Carina Nebula
  • 1.64 ${mu}m$ features of Jets and Outflows from Young Stellar Objects in the Carina Nebula
저자명
Shinn. Jong-Ho,Pyo. Tae-Soo,Lee. Jae-Joon,Lee. Ho-Gyu,Kim. Hyun-Jeong,Koo. Bon-Chul,Sung. Hwankyung,Chun. Moo-Young,Lyo. A. Ran,
간행물명
천문학회보
권/호정보
2014년|39권 1호|pp.56-56 (1 pages)
발행정보
한국천문학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

We present [Fe II] 1.64 ${mu}m$ imaging observations for jets and outflows from young stellar objects over the northern part (${sim}24^{prime}{ imes}45^{prime}$) of the Carina Nebula, a massive star forming region. The observations were performed with IRIS2 of Anglo-Australian Telescope and the seeing was ~1.5". Eleven jets and outflows features are detected at eight different regions, and are termed as Ionized Fe Objects (IFOs). The [Fe II] features have knotty or elongated shapes, and the detection rate of IFOs against previously identified YSOs is 1.4%. Four IFOs show anti-correlated peak intensities in [Fe II] and $H{alpha}$, where the ratio I([Fe II])/I($H{alpha}$) is higher for longish IFOs than for knotty IFOs. We estimate the outflow mass loss rate from the [Fe II] flux using two different methods. The jet-driving objects are identified for three IFOs (IFO-2, -4, and -7). The ratios of the outflow mass loss rate over the disk accretion rate for IFO-4 and -7 are consistent with the previously reported values ($10^{-2}-10^{+1}$), while the ratio is higher for IFO-2. This excess may result from underestimating the disk accretion rate. Other YSO physical parameters show reasonable relations or trends.