论文标题
使用CCD UBV光度法和GAIA DR2天文测量法对开放群集Frolov 1和NGC 7510的研究研究
A Study of Open Clusters Frolov 1 and NGC 7510 using CCD UBV Photometry and Gaia DR2 Astrometry
论文作者
论文摘要
我们基于CCD UBV光度法和GAIA数据，提出了Frolov 1和NGC 7510开放群集的红色，光度法，年龄和距离估计。使用Tübítak国家天文台的1-M望远镜收集光度观测。 GAIA DR2在两个分组的方向上适当的运动数据用于识别群集成员资格。我们确定了适当的运动值（$μ_α\cosδ，μ_δ$）=（$ -3.02 \ pm 0.10 $，$ -1.75 \ pm 0.08 $）和（$ -3.66 \ pm 0.07 $，$ -2.17 \ $ -2.17 \ pm 0.06 \ pm 0.06 $）MAS yr yr $^{-1} $ frolov frolov frolov frolov frolov frolov 1} $ forfrolov frolov frolov 1 and ngc 7510;我们使用两颜色图来获得Frolov 1和NGC 7510的$ E（B-V）$颜色过剩，分别为$ 0.65 \ pm0.06 $和$ 1.05 \ pm0.05 $ mag。 We derived the photometric metallicity of Frolov 1 as [Fe/H] = 0.03$\pm$0.03 dex and adopted a solar metallicity for NGC 7510. Based on these reddening and metallicities we determined the distance moduli and ages of the clusters via fitting PARSEC isochrones to the cluster colour-magnitude diagrams. Frolov 1和NGC 7510的等速线拟合距离分别为$ 2864 \ pm 254 $和$ 2818 \ pm 247 $ PC，它们对应于年龄$ 35 \ pm 10 $ myr和$ 18 \ pm 6 $ myr。我们还计算了平均GAIA距离，并将其与文献中给出的距离进行了比较，并在这项研究中得出结论，我们的结果与以前的工作非常吻合。最后，我们将质量函数斜率计算为Frolov 1的$ x = -1.21 \ pm0.18 $，NGC 7510的$ x = -1.42 \ pm0.27 $。
We present reddening, photometric metallicity, age and distance estimates for the Frolov 1 and NGC 7510 open clusters based on CCD UBV photometric and Gaia data. Photometric observations were collected using the 1-m telescope of the TÜBİTAK National Observatory. Gaia DR2 proper motion data in the direction of two groupings were used to identify cluster membership. We determined mean proper motion values ($ μ_α\cosδ, μ_δ$) = ($-3.02\pm 0.10$, $-1.75 \pm 0.08$) and ($-3.66 \pm 0.07$, $-2.17 \pm 0.06$) mas yr$^{-1}$ for Frolov 1 and NGC 7510, respectively. We used two-colour diagrams to obtain $E(B-V)$ colour excesses for Frolov 1 and NGC 7510 as $0.65\pm0.06$ and $1.05\pm0.05$ mag, respectively. We derived the photometric metallicity of Frolov 1 as [Fe/H] = 0.03$\pm$0.03 dex and adopted a solar metallicity for NGC 7510. Based on these reddening and metallicities we determined the distance moduli and ages of the clusters via fitting PARSEC isochrones to the cluster colour-magnitude diagrams. Isochrone fitting distances for Frolov 1 and NGC 7510 are $2864 \pm 254$ and $2818 \pm 247$ pc, respectively, which correspond to the ages $35\pm 10$ Myr and $18\pm 6$ Myr. We also calculated mean Gaia distances and compared them with those given in the literature and in this study, concluding that our results are in good agreement with previous work. Finally, we calculated the mass function slopes as being $X=-1.21\pm0.18$ for Frolov 1 and $X=-1.42\pm0.27$ for NGC 7510.
