The effects of binary interactions on parameter determinations for early-type galaxies
文献类型：期刊论文
| 作者 | Zhang, Y1 ; Liu, JZ1; Zhang FH(张奉辉)2
|
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2015-05-21 |
| 卷号 | 449期号:3页码:3301-3311 |
| ISSN号 | 0035-8711 |
| 关键词 | binaries: general galaxies: fundamental parameters galaxies: stellar content |
| 通讯作者 | Zhang, Y (reprint author), Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China. |
| 产权排序 | 第二完成单位 |
| 英文摘要 | Based on stellar population models without (SSP) and with (BSP) binary interactions, we investigate the effects of binary interactions on parameter determinations for early-type galaxies (ETGs). We present photometric redshift (photo-z), age and spectral type for photometric data sample by fitting observed magnitudes with the SSP and BSP models. Our results show that binary interactions have no effect on photo-z estimation. Once we neglect binary interactions, the age of ETGs will be underestimated, by contrast, the effects on the age estimations can be negligible for other type of galaxies. For ETG sample, we derive their properties by fitting their spectra with the SSP and BSP models. When comparing these galaxy properties, we find no variation of the overall metallicities for ETGs among the SSP and BSP models. Moreover, the inclusion of binary interactions can affect age estimations. Our results show that the BSP-fitted ages in similar to 33.3 per cent of ETG sample are around 0.5-1.0 Gyr larger than the SSP-fitted ages; similar to 44.2 per cent are only 0.1 - 0.5 Gyr larger; the rest similar to 22.5 per cent are approximately equal. By comparisons, we find the difference of the star formation rate between the SSP and BSP models is large at the late evolution stage. |
| 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] | DIGITAL SKY SURVEY ; STELLAR POPULATION SYNTHESIS ; HIGH-REDSHIFT GALAXIES ; STAR-FORMING GALAXIES ; INITIAL MASS FUNCTION ; SUBDWARF-B-STARS ; ELLIPTIC GALAXIES ; EVOLUTIONARY SYNTHESIS ; ULTRAVIOLET-RADIATION ; FORMATION HISTORY |
| 收录类别 | SCI |
| 原文出处 | http://mnras.oxfordjournals.org/content/449/3/3301 |
| 语种 | 英语 |
| WOS记录号 | WOS:000355337800084 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4596]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 作者单位 | 1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China 2.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China |
| 推荐引用方式 GB/T 7714 | Zhang, Y,Liu, JZ,Zhang FH. The effects of binary interactions on parameter determinations for early-type galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,449(3):3301-3311. |
| APA | Zhang, Y,Liu, JZ,&Zhang FH.(2015).The effects of binary interactions on parameter determinations for early-type galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,449(3),3301-3311. |
| MLA | Zhang, Y,et al."The effects of binary interactions on parameter determinations for early-type galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 449.3(2015):3301-3311. |
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来源：云南天文台
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