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- Title
Physical association and periodicity in quasar families with SDSS and 2MRS.
- Authors
Fulton, C. C.; Arp, H. C.; Hartnett, J. G.
- Abstract
We have used the Sloan Digital Sky Survey (SDSS) data release 7 (DR7) and the 2MASS (Two Micron All Sky Survey) Redshift Survey (2MRS) Ks≤11.75mag<inline-graphic></inline-graphic> data release to test for physical association of candidate companion quasars with putative parent galaxies by virtue of Karlsson periodicity in quasar redshifts. We conducted this analysis using the quasar family detection algorithm described in Fulton and Arp (Astrophys. J. 754:134, <xref>2012</xref>) and used therein to analyze the 2dF Galaxy Redshift Survey (2dFGRS) and the 2dF Quasar Redshift Survey (2QZ). The SDSS and 2MRS data sets confirm the 2dF results and allow us to examine additional object behaviors also at high significance.
- Subjects
QUASARS; SLOAN Digital Sky Survey; TWO Micron All Sky Survey; GALAXIES; ASTRONOMY
- Publication
Astrophysics & Space Science, 2018, Vol 363, Issue 7, p1
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-018-3355-5