| Title | Fixing the reference frame for PPMXL proper motions using extragalactic sources |
| Authors | Grabowski, Kathleen Carlin, Jeffrey L. Newberg, Heidi Jo Beers, Timothy C. Chen, Li Deng, Li-Cai Grillmair, Carl J. Guhathakurta, Puragra Hou, Jin-Liang Hou, Yong-Hui Lepine, Sebastien Liu, Chao Liu, Xiao-Wei Luo, A-Li Smith, Martin C. Yanny, Brian Zhang, Hao-Tong Zhang, Yong Zheng, Zheng |
| Affiliation | Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Univ Notre Dame, JINA, Notre Dame, IN 46556 USA. Shanghai Astron Observ, Shanghai 200030, Peoples R China. Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China. Spitzer Sci Ctr, Pasadena, CA 91125 USA. Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Jiangsu, Peoples R China. Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA. Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China. Peking Univ, Dept Astron, Beijing 100871, Peoples R China. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, 110 8th St, Troy, NY 12180 USA. |
| Keywords | catalogs proper motions surveys: LAMOST LAMOST PILOT SURVEY GUOSHOUJING TELESCOPE LAMOST VELOCITY EXPERIMENT RAVE DIGITAL SKY SURVEY DATA RELEASE CATALOG QUASARS LEGUE ERRORS STARS |
| Issue Date | 2015 |
| Publisher | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
| Citation | RESEARCH IN ASTRONOMY AND ASTROPHYSICS.2015,15,(6),849-859. |
| Abstract | We quantify and correct systematic errors in PPMXL proper motions using extragalactic sources from the first two LAMOST data releases and the Veron-Cetty & Veron Catalog of Quasars. Although the majority of the sources are from the Veron catalog, LAMOST makes important contributions in regions that are not well-sampled by previous catalogs, particularly at low Galactic latitudes and in the south Galactic cap. We show that quasars in PPMXL havemeasurable and significant propermotions, which reflect the systematic zero-point offsets present in the catalog. We confirm the global proper motion shifts seen by Wu et al., and additionally find smaller-scale fluctuations of the QSO-derived corrections to an absolute frame. We average the proper motions of 158 106 extragalactic objects in bins of 3 degrees x 3 degrees and present a table of proper motion corrections. |
| URI | http://hdl.handle.net/20.500.11897/415012 |
| ISSN | 1674-4527 |
| DOI | 10.1088/1674-4527/15/6/007 |
| Indexed | SCI(E) 中国科技核心期刊(ISTIC) 中国科学引文数据库(CSCD) |
| Appears in Collections: | 科维理天文与天体物理研究所 物理学院 |
