SDSS J222428.53+261423.2: unique emission lines properties unveil a sub-kiloparsec dual AGN candidate-Reference-Cited by-同舟云学术

SDSS J222428.53+261423.2: unique emission lines properties unveil a sub-kiloparsec dual AGN candidate

Published:2024-03-29 Issue:1 Volume:531 Page:L76-L81
ISSN:1745-3925
Container-title:Monthly Notices of the Royal Astronomical Society: Letters
language:en
Short-container-title:

Author:

Zheng Qi¹^ORCID,Zhang XueGuang²,Yuan QiRong¹,Severgnini Paola³^ORCID,Vignali Cristian⁴⁵^ORCID

Affiliation:

1. School of Physics and Technology, Nanjing Normal University , No. 1, Wenyuan Road, Nanjing 210023 , P. R. China

2. School of Physical Science and Technology, Guangxi University , No. 100, Daxue East Road, Nanning 530004 , P. R. China

3. INAF-Brera Astronomical Observatory , Via Brera 28, I-20121 Milano , Italy

4. Dipartimento di Fisica e Astronomia Augusto Righi, Alma Mater Studiorum, Università degli Studi di Bologna , Via Gobetti 93/2, I-40129 Bologna , Italy

5. INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna , Via Gobetti 93/3, I-40129 Bologna , Italy

Abstract

ABSTRACT In this paper, we presented a detailed analysis of the Sloan Digital Sky Survey optical spectrum of a new sub-kpc scale dual AGN candidate SDSS J222428.53+261423.2 (=SDSS J2224). The target is one of the few AGNs with all the optical narrow emission lines characterized by double-peaked profiles and with peak separations in velocity units of about 930 km s−1. If the double-peaked narrow emission lines (DPNELs) are due to a dual AGN in SDSS J2224, the estimated physical separation between the two cores is about 500 pc. Meanwhile, three alternative explanations are also discussed in this paper, however, we can not find solid evidence to completely rule them out. Our results support the presence of a sub-kpc dual AGN with DPNELs in all lines, indicating a key episode of galaxy merging evolution at sub-kpc scale.

Funder

National Natural Science Foundation of China

Publisher

Oxford University Press (OUP)

Link

https://academic.oup.com/mnrasl/advance-article-pdf/doi/10.1093/mnrasl/slae033/57305157/slae033.pdf

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