典型文献
A New Statistical Distance Scale for Planetary Nebulae, Based on Gaia EDR3
文献摘要：
The present work aims to build a new statistical distance scale for planetary nebulae (PNe) based on a rigorous calibration sample. The distances of the calibration sample are derived from the trigonometric parallax method using the recent measurements of Gaia Early Data Release 3 (Gaia EDR3). The new distance scale is created by applying the well-known linear relationship between the radio surface brightness temperature and the nebular radius. The calibration sample is made up of 96 PNe of accurately computed distances with uncertainties less than 20％. Earlier ground-and space-based trigonometric parallaxes of PNe display inconsistency with those of Gaia, particularly the Hipparcos results. In addition, these measurements have appreciably lower precision than those of Gaia. When compared to the trigonometric technique, the expansion and kinematic methods exhibited more consistency than the spectroscopic, extinction, gravity, and photoionization methods. Furthermore, contrary to earlier results in the literature, the extinction and gravity methods, on average, underestimate and slightly overestimate the PN distances respectively. As a byproduct of extracting the Gaia parallaxes, we detect the radial velocity and variability for 14 and 3 PN central stars (CSs), respectively. To our knowledge, the variability of Hen 2-447 CS has been determined for the first time.
文献关键词：
中图分类号：
作者姓名：
A.Ali;E.Algarni;A.Mindil;S.A Alghamdi
作者机构：
Astronomy,Space Science&Meteorology Department,Faculty of Science,Cairo University,Giza 12613,Egypt;Astronomy and Space Science Department,Faculty of Science,King Abdulaziz University,Jeddah,Saudi Arabia;Department of Physics,College of Science,University of Jeddah,Jeddah,Saudi Arabia
文献出处：
引用格式：
[1]A.Ali;E.Algarni;A.Mindil;S.A Alghamdi-.A New Statistical Distance Scale for Planetary Nebulae, Based on Gaia EDR3)[J].天文和天体物理学研究,2022(08):170-181
A类：
Nebulae,EDR3,nebulae,PNe,nebular,parallaxes,Hipparcos,Hen
B类：
New,Statistical,Distance,Scale,Planetary,Based,Gaia,present,work,aims,build,new,statistical,scale,planetary,rigorous,calibration,sample,distances,derived,from,trigonometric,using,recent,measurements,Early,Data,Release,created,applying,well,known,linear,relationship,between,radio,surface,brightness,temperature,radius,made,up,accurately,computed,uncertainties,less,than,Earlier,ground,space,display,inconsistency,those,particularly,results,In,addition,these,have,appreciably,lower,precision,When,compared,technique,expansion,kinematic,methods,exhibited,spectroscopic,extinction,gravity,photoionization,Furthermore,contrary,earlier,literature,average,underestimate,slightly,overestimate,respectively,byproduct,extracting,detect,radial,velocity,variability,central,stars,CSs,To,our,knowledge,has,been,determined,first
AB值：
0.519822
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
