论文标题
恒星簇NGC 1513和NGC 4147的光学观察；白色矮人WD1145+017和$ K $带有3.6米devasthal光学望远镜的星形形成区域SH2-61的乐队成像
Optical Observations of star clusters NGC 1513 and NGC 4147; white dwarf WD1145+017 and $K$ band imaging of star forming region Sh2-61 with the 3.6 meter Devasthal Optical Telescope
论文作者
论文摘要
$ UBVRI $ CCD光度数据NGC 1513的$ CCD光度数据是使用3.6 m Indo Indo-Belgian Devasthal光学望远镜（DOT）获得的。 GAIA EDR3天文数据的分析已确定了106个可能的群集成员。群集的平均正确运动估计为$μ_αcosδ= 1.29 \ pm0.02 $和$μ_δ= -3.74 \ pm0.02 $ mas yr yr $^{ - 1} $。 $ e（B-V）$和NGC 1513的距离的估计值分别为0.65 $ \ pm $ 0.03 mag和1.33 $ \ pm $ 0.1 kpc。 $ 225 \ pm25 $ MYR的年龄是通过比较具有深度观察到的群集序列的理论等线来分配给群集的。使用与3.6米点进行的观测值，银河球体簇NGC 4147的距离和年龄的值分别为$ 18.2 \ pm0.2 $ kpc和$ 14 \ pm2 $ gyr。白色矮人WD1145+017和$ K $ -Band成像Sharpless Shshshpless SH 2-61周围的行星过境的光学观察结果表明，观察能力为3.6 m点。天体对象和事件的光学和近红外观察正在用3.6 m的点进行常规进行。他们表明，望远镜的性能与世界其他地方其他类似望远镜的性能相提并论。因此，我们指出，这种观察设施在多波长天文学中很好地预示着包括天体物理喷气机的研究。
The $UBVRI$ CCD photometric data of open star cluster NGC 1513 are obtained with the 3.6-m Indo-Belgian Devasthal optical telescope (DOT). Analyses of the GAIA EDR3 astrometric data have identified 106 possible cluster members. The mean proper motion of the cluster is estimated as $μ_αCosδ=1.29\pm0.02$ and $μ_δ=-3.74\pm0.02$ mas yr$^{-1}$. Estimated values of reddening $E(B-V)$ and distance to the NGC 1513 are 0.65$\pm$0.03 mag and 1.33$\pm$0.1 kpc respectively. An age of $225\pm25$ Myr is assigned to the cluster by comparing theoretical isochrones with deep observed cluster sequence. Using observations taken with the 3.6-m DOT, values of distance and age of the galactic globular cluster NGC 4147 are estimated as $18.2\pm0.2$ Kpc and $14\pm2$ Gyr respectively. The optical observations of planetary transit around white dwarf WD1145+017 and $K$-band imaging of star-forming region Sharpless Sh 2-61 demonstrate observing capability of 3.6-m DOT. Optical and near-infrared observations of celestial objects and events are being carried out routinely with the 3.6-m DOT. They indicate that the performance of the telescope is at par with those of other similar telescopes located elsewhere in the world. We therefore state that this observing facility augurs well for multi-wavelength astronomy including study of astrophysical jets.
