亚矮星研究的新进展

余金龙; 吕国梁

doi:10.13568/j.cnki.651094.651316.2020.05.06.0002

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亚矮星研究的新进展

数理科学 | 更新时间：2026-01-21

- 亚矮星研究的新进展
- 亚矮星研究的新进展
- 新疆大学学报（自然科学版中英文） 2020年37卷第4期页码：435-440
- 作者机构：
  
  新疆大学物理科学与技术学院
- 作者简介：
- 基金信息：
  
  国家自然科学基金(11863005);2019年新疆维吾尔自治区研究生科研创新计划项目(XJ2019G046)~~
- DOI：10.13568/j.cnki.651094.651316.2020.05.06.0002
  中图分类号： P15
- 纸质出版：2020
- 稿件说明：
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[1]余金龙,吕国梁.亚矮星研究的新进展[J].新疆大学学报(自然科学版)(中英文),2020,37(04):435-440+458+441-447.
[1]余金龙,吕国梁.亚矮星研究的新进展[J].新疆大学学报(自然科学版)(中英文),2020,37(04):435-440+458+441-447. DOI： 10.13568/j.cnki.651094.651316.2020.05.06.0002.

DOI：10.13568/j.cnki.651094.651316.2020.05.06.0002.

摘要

本文从近几年最新的观测数据出发

用统计学方法对亚矮星每一子类各个观测参量进行了系统的分析研究

包括热亚矮星双星系统轨道周期、伴星质量分布以及有效温度和光度图;同时

从理论上对每一类亚矮星的形成通道进行详细的分析总结;最后

将这些大量观测数据与理论模拟结果进行比较.结果表明

热亚矮星单星模型和双星模型都可以解释热亚矮星的形成

A型亚矮星是由贫金属主序星和极低质量白矮星这两类恒星组成的.

Abstract

Based on the latest observation data in recent years

we systematically study and analyze parameters of each subclass of subdwarf stars by using statistical methods

including the orbital period of the binary systems

the mass distribution of companion stars of hot subdwarf stars

and the effective temperature and luminosity; meanwhile

we also theoretically analyze and summarize the formation channels of each type of subdwarf stars; finally

we compare these observation data with the theoretical simulation results. We conclude that both single-star model and binary models of hot subdwarf stars can explain the formation of hot subdwarf stars. Type A subdwarf stars(sdAs) are composed of metal-poor main sequence stars(MSs) and extremely low-mass white dwarfs(ELM WDs).

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references

HEBER U,HUNGER K,JONAS G,et al.The atmosphere of sublumious B stars[J].Astronomy and Astrophysics,1984,130:119-130.

HEBER U.The atmosphere of subluminous B stars.II.Analysis of 10 helium poor subdwarfs and the birthrate of sd B stars[J].Astronomy and Astrophysics,1986,155:33.

SAFFER R A,BERGERON P,KOESTER D,et al.Atmospheric parameters of field subdwarf B stars[J].The Astrophysical Journal,1994,432:351.

DORMAN B,ROOD R T,O’CONNELL R W.Ultraviolet radiation from evolved stellar populations.I.models[J].The Astrophysical Journal,1993,419:596.

MAXTED P F L,HEBER U,MARSH T R,et al.The binary fraction of extreme horizontal branch stars[J].Monthly Notices of the Royal Astronomical Society,2001,326(4):1391-1402.

HUMASON M L,ZWICKY F.A Search for faint blue stars[J].The Astrophysical Journal,1947,105:85.

CODE A D.Photoelectric photometry from a space vehicle[J].Publications of the Astronomical Society of the Pacific,1969,81:475.

BROWN T M,BOWERS C W,KIMBLE R A,et al.Detection and photometry of hot horizontal branch stars in the core of M32[J].The Astrophysical Journal,2000,532(1):308-322.

HAN Z,PODSIADLOWSKI P,LYNAS-GRAY A E.A binary model for the UV-upturn of elliptical galaxies[J].Monthly Notices of the Royal Astronomical Society,2007,380(3):1098-1118.

KEPLER S O,PELISOLI I,KOESTER D,et al.New white dwarf stars in the sloan digital sky survey data release 10[J].Monthly Notices of the Royal Astronomical Society,2015,446(4):4078-4087.

KEPLER S O,PELISOLI I,KOESTER D,et al.New white dwarf and subdwarf stars in the sloan digital sky survey data release12[J].Monthly Notices of the Royal Astronomical Society,2016,455(4):3413-3423.

PELISOLI I,KEPLER S O,KOESTER D.The sd A problem-I.physical properties[J].Monthly Notices of the Royal Astronomical Society,2018,475(2):2480-2495.

YU J,LI Z,ZHU C,et al.The formation of subdwarf A-type stars[J].The Astrophysical Journal,2019,885(1):20.

FEIGE J.A search for underluminous hot stars[J].The Astrophysical Journal,1958,128:267.

GREENSTEIN J L.The nature of the faint blue stars[J].The Astrophysical Journal,1966,144:496.

SARGENT W L W,SEARLE L.A quantitative description of the spectra of the brighter feige stars[J].The Astrophysical Journal,1968,152:443.

GREEN R F,SCHMIDT M,LIEBERT J.The palomar-green catalog of ultraviolet-excess stellar objects[J].The Astrophysical Journal Supplement Series,1986,61:305.

HEBER U.Hot subdwarf stars[J].Annual Review of Astronomy and Astrophysics,2009,47(1):211-251.

PELISOLI I,BELL K J,KEPLER S O,et al.The sd A problem-III.New extremely low-mass white dwarfs and their precursors from Gaia astrometry[J].Monthly Notices of the Royal Astronomical Society,2019,482(3):3831-3842.

HEBER U,MOEHLER S,NAPIWOTZKI R,et al.Resolving subdwarf B stars in binaries by HST imaging[J].Astronomy and Astrophysics,2002,383:938-951.

O’TOOLE S J,HEBER U.Abundance studies of sd B stars using UV echelle HST/STIS spectroscopy[J].Astronomy and Astrophysics,2006,452(2):579-590.

STROEER A,HEBER U,LISKER T,et al.Hot subdwarfs from the ESO supernova Ia progenitor survey.II.Atmospheric parameters of subdwarf O stars[J].Astronomy and Astrophysics,2007,462(1):269-280.

LISKER T,HEBER U,NAPIWOTZKI R,et al.Hot subdwarfs from the ESO Supernova Ia progenitor survey.I.Atmospheric parameters and cool companions of sd B stars[J].Astronomy and Astrophysics,2005,430:223-243.

FONTAINE G,GREEN E,BRASSARD P,et al.Results from the Arizona-Montr′eal spectroscopic program:a detailed look at the he abundance pattern in hot subdwarfs[C].In:6th Meeting on Hot Subdwarf Stars and Related Objects,2014,83.

EDELMANN H,HEBER U,HAGEN H-J,et al.Spectral analysis of sd B stars from the hamburg quasar survey[J].Astronomy and Astrophysics,2003,400:939-950.

VENNES S,KAWKA A,N′eeth P.A selection of hot subluminous stars in the GALEX survey-I.correlation with the guide star catalog[J].Monthly Notices of the Royal Astronomical Society,2011,410(3):2095-2112.

LEI Z,ZHAO J,N′eeth P,et al.Hot subdwarf stars identified in gaia DR2 with spectra of lamost DR6 and DR7.I.single-lined spectra[J].The Astrophysical Journal,2020,889(2):117.

LUO Y,N′eeth P,DENG L,et al.Hot subdwarf stars observed in gaia DR2 and lamost DR5[J].The Astrophysical Journal,2019,881(1):7.

MAXTED P F L,HEBER U,T R M,et al.The binary fraction of extreme horizontal branch stars[J].2001,326(4):1391-1402.

NAPIWOTZKI R,KARL C A,LISKER T,et al.Close binary EHB stars from SPY[J].Astrophysics and Space Science,2004,291(3):321-328.

COPPERWHEAT C M,MORALES-RUEDA L,MARSH T R,et al.Radial-velocity measurements of subdwarf B stars[J].Monthly Notices of the Royal Astronomical Society,2011,415(2):1381-1395.

KUPFER T,GEIER S,HEBER U,et al.Hot subdwarf binaries from the MUCHFUSS project.Analysis of 12 new systems and a study of the short-period binary population[J].Astronomy and Astrophysics,2015,576:A44.

KAWKA A,VENNES S,O’TOOLE S,et al.New binaries among UV-selected,hot subdwarf stars and population properties[J].Monthly Notices of the Royal Astronomical Society,2015,450(4):3514-3548.

CASTELLANI M,CASTELLANI V.Mass loss in globular cluster red giants:an evolutionary investigation[J].The Astrophysical Journal,1993,407:649.

CASSISI S,SCHLATTL H,SALARIS M,et al.First full evolutionary computation of the helium flash-induced mixing in population II stars[J].The Astrophysical Journal,2003,582(1):L43-L46.

LANZ T,BROWN T M,SWEIGART A V,et al.Flash mixing on the white dwarf cooling curve:far ultraviolet spectroscopic explorer observations of three He-rich sd B stars[J].The Astrophysical Journal,2004,602(1):342-355.

MILLER BERTOLAMI M M,ALTHAUS L G,UNGLAUB K,et al.Modeling He-rich subdwarfs through the hot-flasher scenario[J].Astronomy and Astrophysics,2008,491(1):253-265.

HAN Z,PODSIADLOWSKI P,MAXTED P F L,et al.The origin of subdwarf B stars-I.The formation channels[J].Monthly Notices of the Royal Astronomical Society,2002,336(2):449-466.

HAN Z,PODSIADLOWSKI P,MAXTED P F L,et al.The origin of subdwarf B stars-II[J].Monthly Notices of the Royal Astronomical Society,2003,341(2):669-691.

ZHANG X,JEFFERY C S.Evolutionary models for double helium white dwarf mergers and the formation of helium-rich hot subdwarfs[J].Monthly Notices of the Royal Astronomical Society,2012,419(1):452-464.

BROWN W R,KILIC M,KOSAKOWSKI A,et al.The ELM survey.VIII.ninety-eight double white dwarf binaries[J].The Astrophysical Journal,2020,889(1):49.

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