Spectroscopic signatures of youth in low-mass kinematic candidates of young moving groups
文献类型：期刊论文
| 作者 | Galvez-Ortiz, MC1,2; Kuznetsov, M3,4; Clarke, JRA2; Pavlenko, YV2,3; Folkes, SL2,5; Pinfield, DJ2; Jones, HRA2; Jenkins, JS2,6; Barnes, JR2; Burningham, B2 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2014-04 |
| 卷号 | 439期号:4页码:3890-3907 |
| 关键词 | brown dwarfs stars: kinematics and dynamics stars: low-mass |
| ISSN号 | 0035-8711 |
| 产权排序 | 第八完成单位 |
| 通讯作者 | Galvez-Ortiz, MC (reprint author), Ctr Astrobiol CSIC INTA, Ajalvil Km 4, E-28850 Madrid, Spain. |
| 英文摘要 | We present a study of age-related spectral signatures observed in 25 young low-mass objects that we have previously determined as possible kinematic members of five young moving groups: the Local Association (Pleiades moving group, age = 20-150 Myr), the Ursa Major group (Sirius supercluster, age = 300 Myr), the Hyades supercluster (age = 600 Myr), IC 2391 supercluster (age = 35-55 Myr) and the Castor moving group (age = 200 Myr). In this paper we characterize the spectral properties of observed high- or low-resolution spectra of our kinematic members by fitting theoretical spectral distributions. We study signatures of youth, such as lithium i 6708A, H alpha emission and other age-sensitive spectroscopic signatures in order to confirm the kinematic memberships through age constraints. We find that 21 (84 per cent) targets show spectroscopic signatures of youth in agreement with the age ranges of the moving group to which membership is implied. For two further objects, age-related constraints remain difficult to determine from our analysis. In addition, we confirm two moving group kinematic candidates as brown dwarfs. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; PROPER MOTION SURVEY ; EFFECTIVE TEMPERATURE SCALE ; X-RAY-EMISSION ; L FIELD DWARFS ; BROWN DWARFS ; CHROMOSPHERIC ACTIVITY ; ROTATIONAL VELOCITIES ; SOLAR NEIGHBORHOOD ; MAGNETIC ACTIVITY |
| 收录类别 | SCI |
| 原文出处 | http://mnras.oxfordjournals.org/content/439/4/3890 |
| 语种 | 英语 |
| WOS记录号 | WOS:000334115400053 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4580]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 作者单位 | 1.Centro de Astrobiología (CSIC-INTA), Crta, Ajalvil km 4, E-28850 Torrejón de Ardoz, Madrid, Spain 2.Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB, UK 3.Main Astronomical Observatory, Academy of Sciences of Ukraine, Golosiiv Woods, Kyiv-127, UA-03680, Ukraine 4.Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Luis Enrique Erro 1, Sta. Ma. Tonantzintla, Puebla 72840, Mexico 5.Departamento de Física y Astronomía, Facultad de ciencias, Universidad de Valparaíso, Ave. Gran Bretaña 1111, Playa Ancha, Casilla 53, Valparaíso, Chile 6.Department of Astronomy, Universidad de Chile, Casilla Postal 36D, Santiago, Chile 7.Department of Astronomy, University of Virginia, PO Box 400325, Charlottesville, VA 22904-4325, USA 8.Yunnan Observatory, PO Box 110, CAS, 650011 Kunming, P. R. China |
| 推荐引用方式 GB/T 7714 | Galvez-Ortiz, MC,Kuznetsov, M,Clarke, JRA,et al. Spectroscopic signatures of youth in low-mass kinematic candidates of young moving groups[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,439(4):3890-3907. |
| APA | Galvez-Ortiz, MC.,Kuznetsov, M.,Clarke, JRA.,Pavlenko, YV.,Folkes, SL.,...&R. S. Pokorny.(2014).Spectroscopic signatures of youth in low-mass kinematic candidates of young moving groups.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,439(4),3890-3907. |
| MLA | Galvez-Ortiz, MC,et al."Spectroscopic signatures of youth in low-mass kinematic candidates of young moving groups".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 439.4(2014):3890-3907. |
入库方式： OAI收割
来源：云南天文台
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