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Finding binary active galactic nuclei candidates by the centroid shift in imaging surveys. II. Testing the method with SDSS J233635.75-010733.7

Liu, Yuan (2016) Finding binary active galactic nuclei candidates by the centroid shift in imaging surveys. II. Testing the method with SDSS J233635.75-010733.7. Astronomy and Astrophysics, 592 . Art. No. L4. ISSN 0004-6361. https://resolver.caltech.edu/CaltechAUTHORS:20190604-142205284

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Abstract

We have previously proposed selecting binary active galactic nuclei (AGNs) candidates using the centroid shift of the images that is induced by the non-synchronous variations of the two nuclei. In this paper, a known binary AGN (SDSS J233635.75-010733.7) is employed to verify the functioning of this method. Using 162 exposures in the R band of the Palomar Transient Factory (PTF), an excess of dispersion in the positional distribution of the binary AGN is detected, although the two nuclei cannot be resolved in the images of PTF. We also propose a new method to compare the position of the binary AGN in PTF g and R band and find that the difference is highly significant even with only 20 exposures. This new method is efficient for two nuclei with different spectral energy distributions such as type I + type II AGN or an off-set AGN. Large-scale surveys such as the Panoramic Survey Telescope and Rapid Response System, and the Large Synoptic Survey Telescope are expected to discover a large sample of binary AGN candidates with these methods.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1051/0004-6361/201628430DOIArticle
https://arxiv.org/abs/1607.00898arXivDiscussion Paper
Additional Information:© 2016 ESO. Article published by EDP Sciences. Received 4 March 2016; Accepted 27 June 2016; Published online 25 July 2016. The author thanks the referee for useful comments that clarified the paper. Some data in this work were obtained as part of the Palomar Transient Factory (PTF) project. This work is supported by the National Natural Science Foundation of China under grant Nos. 11573027, 11103019, 11133002, and 11103022.
Group:Palomar Transient Factory
Subject Keywords:galaxies: active – astrometry – methods: data analysis
Record Number:CaltechAUTHORS:20190604-142205284
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190604-142205284
Official Citation:Finding binary active galactic nuclei candidates by the centroid shift in imaging surveys - II. Testing the method with SDSS J233635.75-010733.7. Yuan Liu. A&A, 592 (2016) L4. DOI: https://doi.org/10.1051/0004-6361/201628430
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96115
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:04 Jun 2019 22:27
Last Modified:03 Oct 2019 21:19

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