The Interacting Late-type Host Galaxy of the Radio-loud Narrow-line Seyfert 1 IRAS 20181-2244

被引：24

作者：

Berton, M. ^{[1
,2
]}

Congiu, E. ^{[3
,4
]}

Ciroi, S. ^{[3
,5
]}

Komossa, S. ^{[6
]}

Frezzato, M. ^{[3
]}

Di Mille, F. ^{[7
]}

Anton, S. ^{[8
]}

Antonucci, R. ^{[9
]}

Caccianiga, A. ^{[4
]}

Coppi, P. ^{[10
]}

Jarvela, E. ^{[2
,11
]}

Kotilainen, J. ^{[1
]}

Lahteenmaki, A. ^{[2
,11
]}

Mathur, S. ^{[12
,13
]}

Chen, S. ^{[3
,14
,15
]}

Cracco, V ^{[3
]}

La Mura, G. ^{[16
]}

Rafanelli, P. ^{[3
]}

机构：

[1] Univ Turku, Quantum, Finnish Ctr Astron ESO FINCA, Vesilinnantie 5, FI-20014 Turku, Finland

[2] Aalto Univ, Metsahovi Radio Observ, Metsahovintie 114, FI-02540 Kylmala, Finland

[3] G Galilei Univ Padova, Dipartimento Fis & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy

[4] INAF Osservatorio Astron Brera, Via E Bianchi 46, I-23807 Merate, LC, Italy

[5] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[6] Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany

[7] Carnegie Inst Washington, Las Campanas Observ, Colina El Pino Casilla 601, La Serena, Chile

[8] Univ Aveiro, Dept Phys, CIDMA, P-3810193 Aveiro, Portugal

[9] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[10] Yale Univ, Yale Ctr Astron & Astrophys, New Haven, CT 06520 USA

[11] Aalto Univ, Dept Elect & Nanoengn, POB 15500, FI-00076 Aalto, Finland

[12] Ohio State Univ, Dept Astron, 140 West 18th Ave, Columbus, OH 43210 USA

[13] Ohio State Univ, Ctr Cosmol & AstroParticle Phys, 140 West 18th Ave, Columbus, OH 43210 USA

[14] Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Guangdong, Peoples R China

[15] INFN, Sez Padova, I-135131 Padua, Italy

[16] Lab Instrumentat & Expt Particle Phys, Av Prof Gama Pinto 2, P-1649003 Lisbon, Portugal

来源：

ASTRONOMICAL JOURNAL | 2019年 / 157卷 / 02期

基金：

美国安德鲁·梅隆基金会; 芬兰科学院; 美国国家航空航天局;

关键词：

galaxies: active; galaxies: peculiar; galaxies: photometry; galaxies: Seyfert; ACTIVE GALACTIC NUCLEI; ULTRALUMINOUS INFRARED GALAXIES; SUPERMASSIVE BLACK-HOLES; STAR-FORMATION; X-RAY; ACCRETION RATE; EVOLUTION; EMISSION; MASSES; DECOMPOSITION;

D O I：

10.3847/1538-3881/aaf5ca

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Narrow-line Seyfert 1 galaxies (NLS1s) are a class of active galactic nuclei that are known to be one of the few sources of gamma-rays, which originate in a relativistic beamed jet. Because of their relatively large distance, a poorly investigated aspect of these jetted NLS1s is their environment, and in particular, their host galaxy. In this work, we present the results of a morphological analysis of the host galaxy of the jetted NLS1 IRAS 20181-2244 observed with the 6.5 m Baade Telescope of the Las Campanas Observatory. The GALFIT analysis run on the Ks image, along with additional spectroscopic observations performed with the Nordic Optical Telescope, clearly revealed the presence of an interacting system of two galaxies. The data suggest that this NLS1 is hosted by a late-type galaxy, although the result is not conclusive. This analysis, along with other results in the literature, might suggest that two populations of jetted NLS1 exist. Further morphological studies are needed to confirm or disprove this hypothesis.

引用

页数：7

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