P-MaNGA Galaxies: emission-lines properties - gas ionization and chemical abundances from prototype observations
文献类型：期刊论文
| 作者 | Belfiore, F.1,2; Maiolino, R.1,2; Bundy, K.3; Thomas, D.4; Maraston, C.4; Wilkinson, D.4; Sanchez, S. F.5; Bershady, M.6; Blanc, G. A.7; Bothwell, M.1,2 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2015-05-01 |
| 卷号 | 449期号:1页码:867-900 |
| 关键词 | galaxies: abundances galaxies: active galaxies: evolution galaxies: fundamental parameters galaxies: ISM |
| 英文摘要 | MaNGA (Mapping Nearby Galaxies at Apache Point Observatory) is a 6-yr Sloan Digital Sky Survey (SDSS-IV) survey that will obtain spatially resolved spectroscopy from 3600 to 10 300 angstrom for a representative sample of ove10 000 nearby galaxies. In this paper, we present the analysis of nebular emission-line properties using observations of 14 galaxies obtained with P-MaNGA, a prototype of the MaNGA instrument. By using spatially resolved diagnostic diagrams, we find extended star formation in galaxies that are centrally dominated by Seyfert/LINER-like emission, which illustrates that galaxy characterizations based on single fibre spectra are necessarily incomplete. We observe extended low ionization nuclear emission-line regions (LINER)-like emission (up to 1R(e)) in the central regions of three galaxies. We make use of the Ha equivalent width [EW(H alpha)] to argue that the observed emission is consistent with ionization from hot evolved stars. We derive stellar population indices and demonstrate a clear correlation between D-n(4000) and EW(H delta(A)) and the position in the ionization diagnostic diagram: resolved galactic regions which are ionized by a Seyfert/LINER-like radiation field are also devoid of recent star formation and host older and/or more metal-rich stellar populations. We also detect extraplanar LINER-like emission in two highly inclined galaxies, and identify it with diffuse ionized gas. We investigate spatially resolved metallicities and find a positive correlation between metallicity and star formation rate surface density. We further study the relation between N/O versus O/H on resolved scales. We find that, at given N/O, regions within individual galaxies are spread towards lower metallicities, deviating from the sequence defined by galactic central regions as traced by Sloan 3-arcsec fibre spectra. We suggest that the observed dispersion can be a tracer for gas flows in galaxies: infalls of pristine gas and/or the effect of a galactic fountain. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | STAR-FORMING GALAXIES ; DIGITAL SKY SURVEY ; MASS-METALLICITY RELATION ; H-II REGIONS ; INTEGRAL FIELD SPECTROSCOPY ; DISTRIBUTED ELECTRON ENERGIES ; STELLAR POPULATION SYNTHESIS ; LUMINOUS INFRARED GALAXIES ; HIGH-SPECTRAL-RESOLUTION ; ACTIVE GALACTIC NUCLEI |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000355345600064 |
| 公开日期 | 2015-08-18 |
| 源URL | [http://119.78.226.72/handle/331011/18349]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England 2.Univ Cambridge, Kavli Inst Cosmol, Cambridge CB3 0HE, England 3.Univ Tokyo, Todai Inst Adv Study, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan 4.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England 5.Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico 6.Univ Wisconsin, Dept Astron, Madison, WI 53706 USA 7.Carnegie Inst Washington Observ, Pasadena, CA 91101 USA 8.Yale Univ, Dept Phys, New Haven, CT 06520 USA 9.European So Observ, D-85748 Garching, Germany 10.Univ Texas Austin, McDonald Observ, Austin, TX 78712 USA |
| 推荐引用方式 GB/T 7714 | Belfiore, F.,Maiolino, R.,Bundy, K.,et al. P-MaNGA Galaxies: emission-lines properties - gas ionization and chemical abundances from prototype observations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,449(1):867-900. |
| APA | Belfiore, F..,Maiolino, R..,Bundy, K..,Thomas, D..,Maraston, C..,...&Simmons, A..(2015).P-MaNGA Galaxies: emission-lines properties - gas ionization and chemical abundances from prototype observations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,449(1),867-900. |
| MLA | Belfiore, F.,et al."P-MaNGA Galaxies: emission-lines properties - gas ionization and chemical abundances from prototype observations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 449.1(2015):867-900. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。