Integrated spectral energy distributions and absorption-feature indices of single stellar populations

	Integrated spectral energy distributions and absorption-feature indices of single stellar populations
	Zhang FH(张奉辉)1 ; Han ZW(韩占文)1 ; Li LF(李立芳)1 ; Hurley, JR 2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2004-05-11
卷号	350 期号:2 页码:710-724
关键词	stars : evolution galaxies : individual : M32 galaxies : stellar content
ISSN号	0035-8711
通讯作者	Zhang, FH (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan Province, Peoples R China.
产权排序	第一完成单位
英文摘要	Using evolutionary population synthesis, we present integrated spectral energy distributions and absorption-line indices defined by the Lick Observatory image dissector scanner (referred to as Lick/IDS) system, for an extensive set of instantaneous burst single stellar populations (SSPs). The ages of the SSPs are in the range 1 Gyrless than or equal totauless than or equal to19 Gyr and the metallicities are in the range -2.3less than or equal to[Fe/H]less than or equal to+0.2. Our models use the rapid single stellar evolution algorithm of Hurley, Pols and Tout for the stellar evolutionary tracks, the empirical and semi-empirical calibrated BaSeL-2.0 model of Lejeune, Cuisinier and Buser for the library of stellar spectra and the empirical fitting functions of Worthey, Faber, Gonzalez and Burstein for the Lick/IDS spectral absorption-feature indices. Applying our synthetic Lick/IDS absorption-line indices to the merit function, we obtain the age and the metallicity of the central region of M32, which can be well explained by an instantaneous SSP with an age of similar to6.5 Gyr and a metallicity similar to solar. Applying the derived age and the metallicity from the merit function to a number of index-index diagrams, we find that the plots of H-beta-Fe5015 and H-beta-Fe5782 are the best index-index diagrams from which we can directly obtain reasonable age and metallicity.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	EARLY-TYPE GALAXIES ; LOW-MASS STARS ; ASYMPTOTIC GIANT BRANCH ; M-CIRCLE-DOT ; ELLIPTIC GALAXIES ; EVOLUTIONARY SEQUENCES ; RADIATIVE OPACITIES ; GLOBULAR-CLUSTERS ; THEORETICAL ISOCHRONES ; MODELS
收录类别	SCI
原文出处	http://mnras.oxfordjournals.org/content/350/2/710
语种	英语
WOS记录号	WOS:000221095500031
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4410]
专题	云南天文台_大样本恒星演化研究组
作者单位	1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province, 650011, China 2.Department of Astrophysics, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024, USA
推荐引用方式 GB/T 7714	Zhang FH,Han ZW,Li LF,et al. Integrated spectral energy distributions and absorption-feature indices of single stellar populations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2004,350(2):710-724.
APA	Zhang FH,Han ZW,Li LF,&Hurley, JR.(2004).Integrated spectral energy distributions and absorption-feature indices of single stellar populations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,350(2),710-724.
MLA	Zhang FH,et al."Integrated spectral energy distributions and absorption-feature indices of single stellar populations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 350.2(2004):710-724.