Details

Autor(en) / Beteiligte

• Benítez, E
• Jiménez-Bailón, E
• Negrete, C A
• Ruschel-Dutra, D
• Rodríguez-Espinosa, J M
• Cruz-González, I
• Rodríguez, L F
• Chavushyan, V H
• Marziani, P
• Gutiérrez, L
• González-Martin, O
• Jiang, B W
• D’Onofrio, M

Titel

Unravelling the nature of the dual AGN in the galaxy pair system IRAS 05589+2828 and 2MASX J06021107 + 2828382

Ist Teil von

• Monthly notices of the Royal Astronomical Society, 2022-09, Vol.516 (4), p.5270-5288

Ort / Verlag

Oxford University Press

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• ABSTRACT We have studied the nuclear region of the previously detected dual AGN system in the galaxy pair IRAS 05589 + 2828 and 2MASX J06021107 + 2828382, through new optical spectroscopy observations, along with radio and X-ray archival data. Our multiwavelength data strongly suggest that the Sy1 IRAS 05589+2828  (z = 0.0330 ± 0.0002) conforms to a dual AGN system with the Sy2 2MASX J06021107 + 2828382  (z = 0.0334 ± 0.0001), with a projected separation obtained from the radio data of 20.08 arcsec  (∼13.3 kpc). Analysis of the optical spectra reveals a faint narrow extended emission from H α and [O iii] amidst the two AGN, supporting evidence for an ongoing merger. IRAS 05589 + 2828  is a double component narrow emission-line AGN, with complex broad Balmer emission line profiles that clearly show a strong red-peaklet with a velocity shift of ∼3500  km s−1. The black hole mass estimates of IRAS  05589 + 2828  and 2MASX J06021107 + 2828382  are log M $\rm _{BH}$  =  8.59 ± 0.14 (M⊙) and log M$\rm _{BH}$ = 8.21 ± 0.2 (M⊙), respectively. In the X-ray bands, IRAS 05589 + 2828  is compatible with a Type 1 object, showing both spectral and flux variability. Chandra  data of 2MASX J06021107 + 2828382 allowed us to measure a high hardness ratio in this source, providing evidence for a Type 2 AGN. The 22 GHz image obtained with the Karl G. Jansky Very Large Array has revealed that both AGN are compact radio objects with spectral indices −0.26 ± 0.03 and −0.70 ± 0.11, confirming for the first time its dual AGN nature in the radio bands.