引力透镜类星体SDSS J1001+5027吸收线证认  

Identification of the Absorption Line of Gravitational Lensing Quasar SDSS J1001+5027

作　　者：潘彩娟[1] 黄红艳 黄伟荣[3] 陆伟坚 农卫警 林樱如 陆美美 姚敏 姚知考 PAN Cai-juan;HUANG Hong-yan;HUANG Wei-rong;LU Wei-jian;NONG Wei-jing;LIN Ying-ru;LU Mei-mei;YAO Min;YAO Zhi-kao(Baise University,Baise 533000,China;Yunnan normal university,Academy of Physics and Telecommunication Engineering,Kunming 650500,China;Guangzhou University,School of Physics and Electronic Engineering,Guangzhou 510006,China)

机构地区：[1]百色学院,百色533000 [2]云南师范大学物理与电子信息学院,昆明650500 [3]广州大学物理与电子工程学院,广州510006

出　　处：《天文学进展》2019年第1期61-72,共12页Progress In Astronomy

基　　金：国家自然科学基金(113630011);广西自然科学基金(2017GXNSFAA198348)

摘　　要：基于斯隆数字化巡天(Sloan Digital Sky Survey,SDSS)第12期数据(data release 12,DR12)的光谱,分析引力透镜类星体SDSS J1001+5027的A, B两个像的光谱。两个像光谱的红移分别为1.84132±0.00024和1.84545±0.00012,透镜天体红移约为0.415。通过证认可靠的CⅣλλ1548, 1551或Mg Ⅱλλ2796, 2803窄吸收双线的方法,证认出A, B两个像的光谱中红移分别为1.60677±0.00012, 0.87140±0.00007和0.41455±0.00006的3个吸收系统。从3个吸收系统共证认出27条窄吸收线。测量27条窄吸收线的等值宽度,再通过分析、比较3个吸收系统在A, B两个像光谱中吸收线的数量及等值宽度的差异,给出了3个吸收系统在引力透镜类星体SDSS J1001+5027视线方向可能的分布示意图。The spectra of the two images of the gravitational lensing quasar SDSS J1001+5027 A and B are analyzed based on the spectra of the Data Release 12(DR12)of Sloan Digital Sky Survey(SDSS).The redshifts of the two images are 1.84132±0.00024 and 1.84545±0.00012 respectively,and the redshift of the lensing galaxy is about 0.415.By identifying the CⅣλλ1548,1551 or the MgⅡλλ2796,1551 double narrow absorption lines,the red shifts of A and B images were identified as three absorption systems of 1.60677±0.00012,0.87140±0.00007 and 0.41455±0.00006.Twenty-seven narrow absorption lines were identified by three absorption systems.The equivalent width values of the twenty-seven narrow absorption lines were measured.The differences of the numbers and equivalent widths of the absorption lines in the A and B image spectra of the three absorption systems were analyzed and compared.The possible distribution of three absorption systems in the line of sight direction of gravitational lensing quasar SDSS J1001+5027 is given.

关 键 词：引力透镜类星体 吸收线 证认 光谱 

分 类 号：P158[天文地球—天文学]