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Fixing the reference frame for PPMXL proper motions using extragalactic sources

Grabowski, Kathleen and Carlin, Jeffrey L. and Newberg, Heidi Jo and Beers, Timothy C. and Chen, Li and Deng, Li-Cai and Grillmair, Carl J. and Guhathakurta, Puragra and Hou, Jin-Liang and Hou, Yong-Hui and Lépine, Sébastien and Liu, Chao and Liu, Xiao-Wei and Luo, A-Li and Smith, Martin C. and Yanny, Brian and Zhang, Hao-Tong and Zhang, Yong and Zheng, Zheng (2015) Fixing the reference frame for PPMXL proper motions using extragalactic sources. Research in Astronomy and Astrophysics, 15 (6). pp. 849-859. ISSN 1674-4527.

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We quantify and correct systematic errors in PPMXL proper motions using extragalactic sources from the first two LAMOST data releases and the Vèron-Cetty & Vèron Catalog of Quasars. Although the majority of the sources are from the Vèron 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 have measurable and significant proper motions, 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° × 3° and present a table of proper motion corrections.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Carlin, Jeffrey L.0000-0002-3936-9628
Beers, Timothy C.0000-0003-4573-6233
Grillmair, Carl J.0000-0003-4072-169X
Guhathakurta, Puragra0000-0001-8867-4234
Lépine, Sébastien0000-0002-2437-2947
Liu, Chao0000-0001-7049-493X
Yanny, Brian0000-0002-9541-2678
Additional Information:© 2015 IOP. Received 2014 August 2; accepted 2014 September 2. This research is supported by the National Science Foundation under Grant AST 09-37523. T.C.B. acknowledges partial support for this work from grant PHY 08-22648; Physics Frontier Center/Joint Institute for Nuclear Astrophysics (JINA), awarded by the US National Science Foundation. The Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) is a National Major Scientific Project built by the Chinese Academy of Sciences. Funding for the project has been provided by the National Development and Reform Commission. LAMOST is operated and managed by the National Astronomical Observatories, Chinese Academy of Sciences.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
NSFAST 09-37523
NSFPHY 08-22648
National Development and Reform CommissionUNSPECIFIED
Subject Keywords:catalogs proper motions surveys: LAMOST
Issue or Number:6
Classification Code:PACS: 97.10.Wn; 98.54.Aj; 95.80.+p
Record Number:CaltechAUTHORS:20150623-121225044
Persistent URL:
Official Citation:Fixing the reference frame for PPMXL proper motions using extragalactic sources Kathleen Grabowski et al 2015 Res. Astron. Astrophys. 15 849
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58451
Deposited By: Ruth Sustaita
Deposited On:23 Jun 2015 20:25
Last Modified:04 Nov 2019 21:25

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