论文标题
发现新的三角洲星星明星
Discovery of new Delta Scuti Stars
论文作者
论文摘要
脉动星是恒星天体物理学的显着物体。它们的脉动频率使我们能够探测恒星的内部结构。最著名的脉动恒星组之一是$Δ$ SCUTI变量，可用于了解A-F型恒星中的能量传递机理。因此，在当前的研究中，我们专注于发现$δ$ Scuti恒星。对于这项调查，我们遵循一些标准。首先，我们通过眼睛检查了苔丝数据库，并发现了一些表现出类似脉动行为的单恒星。我们的第二个标准是$ t _ {\ rm eff} $和$ \ log g $范围。 $δ$ Scuti星通常具有$ t _ {\ rm eff} $和$ \ log g $在6300 \，$ - $ \，8500 \，k和3.2 \，$ - $ \，4.3的范围内。因此，我们选择了具有TIC $ t _ {\ rm eff} $和$ \ log g $值的星星。另一个标准是脉动频率。对所有候选恒星进行了频率分析。此外，$ m_ {v} $，$ l $以及$ m_ {bol} $的目标恒星的参数确定以计算脉动常数并在H-R图中显示其位置。通过考虑恒星的频率范围和脉动常数，进行最终的脉动类型分类。这项研究的结果是，发现了五个$δ$ scuti，一个$γ$ doradus和四个混合动力系统。
Pulsating stars are remarkable objects for stellar astrophysics. Their pulsation frequencies allow us to probe the internal structure of stars. One of the most known groups of pulsating stars is $δ$ Scuti variables which could be used to understand the energy transfer mechanism in A-F type stars. Therefore, in the current study, we focused on the discovery of $δ$ Scuti stars. For this investigation, we followed some criteria. First, we inspected TESS database by eye and discovered some single stars that exhibit pulsation-like behaviour. Our second criterion is $T_{\rm eff}$ and $\log g$ range. The $δ$ Scuti stars generally have $T_{\rm eff}$ and $\log g$ value in a range of 6300\,$-$\,8500\,K and 3.2\,$-$\,4.3, respectively. Hence, we selected the stars which have TIC $T_{\rm eff}$ and $\log g$ values in these ranges. The other criterion is the pulsating frequency. A frequency analysis was performed for all the candidate stars. In addition, $M_{V}$, $L$ and also $M_{bol}$ parameters of the target stars were determined to calculate the pulsation constants and show their positions in the H-R diagram. The final pulsation type classification was made by considering the frequency ranges and pulsation constants of the stars. As a result of the study, five $δ$ Scuti, one $γ$ Doradus and four hybrid systems were discovered.
