论文标题
基于IFU观测的狼射线星云的形态
Morphologies of Wolf-Rayet Planetary Nebulae based on IFU Observations
论文作者
论文摘要
行星星云（PNE）的整体场单元（IFU）光谱提供了有关其形态和电离结构的大量信息。对ANU 2.3-m望远镜上的广阔田间光谱仪（WiFes）进行了对缺乏氢的恒星样品的IFU调查。在本文中，我们介绍了PN M2-42的H $α$运动学观察结果，该观察是弱发射线（$ WELS $），以及紧凑型PNE HEN 3-1333和HEN 2-113周围的Wolf-Rayet（[WR]）围绕此Wifes调查的恒星。我们看到，在M2-42的速度[N II]通道中先前鉴定出的环和点对称结也被薄薄的外部离子化H $α$ halo所包围，其极性膨胀显然比低电离结的速度快。 Hen3-1333和Hen2-113的速度分辨H $α$α$α$频道图还表明，微弱的多极裂片可能会达到$ \ sim 100 \ pm 20 $ km s $ s $ s $ s $ s $ s $ s $^{ - 1} $的预计流出速度。我们最近对WIFE/IFU对[WR]和$ WELS $调查的运动学研究主要暗示了椭圆形的形态，而其中许多人都存在于这些调查中。由于妻子没有足够的分辨率来解决紧凑型（$ \ leq 6 $ arcsec）pne，因此未来的高分辨率空间分辨观察对于揭示其形态型结构的完整详细信息是必要的。
Integral field unit (IFU) spectroscopy of planetary nebulae (PNe) provides a plethora of information about their morphologies and ionization structures. An IFU survey of a sample of PNe around hydrogen-deficient stars has been conducted with the Wide Field Spectrograph (WiFeS) on the ANU 2.3-m telescope. In this paper, we present the H$α$ kinematic observations of the PN M2-42 with a weak emission-line star ($wels$), and the compact PNe Hen 3-1333 and Hen 2-113 around Wolf-Rayet ([WR]) stars from this WiFeS survey. We see that the ring and point-symmetric knots previously identified in the velocity [N II] channels of M2-42 are also surrounded by a thin exterior ionized H$α$ halo, whose polar expansion is apparently faster than the low-ionization knots. The velocity-resolved H$α$ channel maps of Hen3-1333 and Hen2-113 also suggest that the faint multipolar lobes may get to a projected outflow velocity of $\sim 100 \pm 20$ km s$^{-1}$ far from the central stars. Our recent kinematic studies of the WiFeS/IFU survey of other PNe around [WR] and $wels$ mostly hint at elliptical morphologies, while collimated outflows are present in many of them. As the WiFeS does not have adequate resolution for compact ($\leq 6$ arcsec) PNe, future high-resolution spatially-resolved observations are necessary to unveil full details of their morpho-kinematic structures.
