A New Statistical Distance Scale for Planetary Nebulae,Based on Gaia EDR3

作     者：A.Ali E.Algarni A.Mindil S.A Alghamdi A.Ali;E.Algarni;A.Mindil;S.A Alghamdi

作者机构：AstronomySpace Science&Meteorology DepartmentFaculty of ScienceCairo UniversityGiza 12613Egypt Astronomy and Space Science DepartmentFaculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia Department of PhysicsCollege of ScienceUniversity of JeddahJeddahSaudi Arabia 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2022年第22卷第8期

页      面：170-181页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：Gaia Data Processing and Analysis Consortium Diabetes Patient Advocacy Coalition, DPAC European Space Agency, ESA 

主　　题：(ISM:)planetary nebulae:general parallaxes stars:variables:general stars:distances 

摘      要：The present work aims to build a new statistical distance scale for planetary nebulae(PNe)based on a rigorous calibration *** 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 *** calibration sample is made up of 96 PNe of accurately computed distances with uncertainties less than20%.Earlier ground-and space-based trigonometric parallaxes of PNe display inconsistency with those of Gaia,particularly the Hipparcos *** addition,these measurements have appreciably lower precision than those of *** compared to the trigonometric technique,the expansion and kinematic methods exhibited more consistency than the spectroscopic,extinction,gravity,and photoionization ***,contrary to earlier results in the literature,the extinction and gravity methods,on average,underestimate and slightly overestimate the PN distances *** a byproduct of extracting the Gaia parallaxes,we detect the radial velocity and variability for 14 and 3 PN central stars(CSs),*** our knowledge,the variability of Hen 2-447 CS has been determined for the first time.