论文标题
PAH和NBL的特征在行星Nebulae NGC 7027和BD +303639中具有36m点上的TIRCAM2仪器的检测
PAH and nbL Features Detection in Planetary Nebulae NGC 7027 and BD +303639 with TIRCAM2 Instrument on 3.6m DOT
论文作者
论文摘要
在360万个传播光学的光学望远镜（DOT），Aries，Nainital，Nainital的据报道，使用新安装的TIFR红外摄像头II（TIRCAM2）对高分辨率的红外成像观测结果，新安装的TIFR红外摄像头II（TIRCAM2）对新安装的TIFR红外摄像头II（TIRCAM2）进行。图像是在J，H，K，多环芳烃（PAH）和窄带L（NBL）过滤器中获取的。观察结果表明，在壳中，温暖的灰尘和PAHS排放。这两个对象的成像是使用dot上的tircam2在PAH和NBL频段中的最初观察结果之一。所有频段中的NGC 7027图像均显示出相似的椭圆形形态，〜6“ .7和〜4” .5半肌和半米轴。考虑到峰值的尺寸最高10％的峰值，星云从中心恒星延伸至8英寸，露出多极进化。相对较凉的BD +303639显示了一个矩形环形的星云。在J和H束带中，它显示出〜8英寸的角直径，而较小的〜6” .9 .9 .9 .9 .9 .9。 NGC 7027和BD +303639的中央恒星的6000和5000个AU分析。
High resolution infrared imaging observations of the young Planetary Nebulae NGC 7027 and BD +303639, taken with the newly installed TIFR Infrared Camera-II (TIRCAM2) on 3.6m Devasthal Optical Telescope (DOT), ARIES, Nainital, are being reported. The images are acquired in J, H, K, polycyclic aromatic hydrocarbon (PAH) and narrow-band L (nbL) filters. The observations show emission from warm dust and PAHs in the circumstellar shells. The imaging of the two objects are among the first observations in PAH and nbL bands using TIRCAM2 on DOT. The NGC 7027 images in all bands show similar elliptical morphology with ~6".7 and ~4".5 semi-major and semi-minor axes. Considering size up to 10% of peak value the nebula extends upto 8" from the central star revealing a multipolar evolution. The relatively cooler BD +303639 shows a rectangular-ring shaped nebula. In J and H bands it shows an angular diameter of ~8", while a smaller ~6".9 size is observed in K, PAH and nbL bands. The 3.28 micron emission indicates presence of PAHs at about 6000 and 5000 AU from the central stars in NGC 7027 and BD +303639 respectively. Analysis suggests domination of neutral PAHs in BD+303639, while in NGC 7027 there is higher ionization and more processed PAH population.
