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BAT AGN spectroscopic survey, XIX : type 1 versus type 2 AGN dichotomy from the point of view of ionized outflows

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Abstract
We present a detailed study of ionized outflows in a large sample of similar to 650 hard X-ray-detected active galactic neuclei (AGNs). Using optical spectroscopy from the BAT AGN Spectroscopic Survey (BASS), we are able to reveal the faint wings of the [OIII] emission lines associated with outflows covering, for the first time, an unexplored range of low AGN bolometric luminosity at low redshift (z similar to 0.05). We test if and how the incidence and velocity of ionized outflow is related to AGN physical parameters: black hole mass (M-BH), gas column density (N-H), Eddington ratio (lambda(Edd)), [OIII], X-ray, and bolometric luminosities. We find a higher occurrence of ionized outflows in type 1.9 (55 per cent) and type 1 AGNs (46 per cent) with respect to type 2 AGNs (24 per cent). While outflows in type 2 AGNs are evenly balanced between blue and red velocity offsets with respect to the [OIII] narrow component, they are almost exclusively blueshifted in type 1 and type 1.9 AGNs. We observe a significant dependence between the outflow occurrence and accretion rate, which becomes relevant at high Eddington ratios [log(lambda(Edd)) greater than or similar to -1.7]. We interpret such behaviour in the framework of covering factor-Eddington ratio dependence. We do not find strong trends of the outflow maximum velocity with AGN physical parameters, as an increase with bolometric luminosity can be only identified when including samples of AGNs at high luminosity and high redshift taken from literature.
Keywords
galaxies: active, galaxies: nuclei, quasars: emission lines, SUPERMASSIVE BLACK-HOLES, ACTIVE GALACTIC NUCLEI, SEYFERT-GALAXIES, STAR-FORMATION, FEEDBACK, EMISSION, COEVOLUTION, QUASARS, GROWTH, MODEL

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MLA
Rojas, AF, et al. “BAT AGN Spectroscopic Survey, XIX : Type 1 versus Type 2 AGN Dichotomy from the Point of View of Ionized Outflows.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 491, no. 4, 2020, pp. 5867–80, doi:10.1093/mnras/stz3386.
APA
Rojas, A., Sani, E., Gavignaud, I., Ricci, C., Lamperti, I., Koss, M., … Vietri, G. (2020). BAT AGN spectroscopic survey, XIX : type 1 versus type 2 AGN dichotomy from the point of view of ionized outflows. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 491(4), 5867–5880. https://doi.org/10.1093/mnras/stz3386
Chicago author-date
Rojas, AF, E Sani, I Gavignaud, C Ricci, I Lamperti, M Koss, B Trakhtenbrot, et al. 2020. “BAT AGN Spectroscopic Survey, XIX : Type 1 versus Type 2 AGN Dichotomy from the Point of View of Ionized Outflows.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 491 (4): 5867–80. https://doi.org/10.1093/mnras/stz3386.
Chicago author-date (all authors)
Rojas, AF, E Sani, I Gavignaud, C Ricci, I Lamperti, M Koss, B Trakhtenbrot, K Schawinski, K Oh, FE Bauer, M Bischetti, R Boissay-Malaquin, A Bongiorno, F Harrison, D Kakkad, N Masetti, F Ricci, T Shimizu, Marko Stalevski, D Stern, and G Vietri. 2020. “BAT AGN Spectroscopic Survey, XIX : Type 1 versus Type 2 AGN Dichotomy from the Point of View of Ionized Outflows.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 491 (4): 5867–5880. doi:10.1093/mnras/stz3386.
Vancouver
1.
Rojas A, Sani E, Gavignaud I, Ricci C, Lamperti I, Koss M, et al. BAT AGN spectroscopic survey, XIX : type 1 versus type 2 AGN dichotomy from the point of view of ionized outflows. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2020;491(4):5867–80.
IEEE
[1]
A. Rojas et al., “BAT AGN spectroscopic survey, XIX : type 1 versus type 2 AGN dichotomy from the point of view of ionized outflows,” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 491, no. 4, pp. 5867–5880, 2020.
@article{8643064,
  abstract     = {{We present a detailed study of ionized outflows in a large sample of similar to 650 hard X-ray-detected active galactic neuclei (AGNs). Using optical spectroscopy from the BAT AGN Spectroscopic Survey (BASS), we are able to reveal the faint wings of the [OIII] emission lines associated with outflows covering, for the first time, an unexplored range of low AGN bolometric luminosity at low redshift (z similar to 0.05). We test if and how the incidence and velocity of ionized outflow is related to AGN physical parameters: black hole mass (M-BH), gas column density (N-H), Eddington ratio (lambda(Edd)), [OIII], X-ray, and bolometric luminosities. We find a higher occurrence of ionized outflows in type 1.9 (55 per cent) and type 1 AGNs (46 per cent) with respect to type 2 AGNs (24 per cent). While outflows in type 2 AGNs are evenly balanced between blue and red velocity offsets with respect to the [OIII] narrow component, they are almost exclusively blueshifted in type 1 and type 1.9 AGNs. We observe a significant dependence between the outflow occurrence and accretion rate, which becomes relevant at high Eddington ratios [log(lambda(Edd)) greater than or similar to -1.7]. We interpret such behaviour in the framework of covering factor-Eddington ratio dependence. We do not find strong trends of the outflow maximum velocity with AGN physical parameters, as an increase with bolometric luminosity can be only identified when including samples of AGNs at high luminosity and high redshift taken from literature.}},
  author       = {{Rojas, AF and Sani, E and Gavignaud, I and Ricci, C and Lamperti, I and Koss, M and Trakhtenbrot, B and Schawinski, K and Oh, K and Bauer, FE and Bischetti, M and Boissay-Malaquin, R and Bongiorno, A and Harrison, F and Kakkad, D and Masetti, N and Ricci, F and Shimizu, T and Stalevski, Marko and Stern, D and Vietri, G}},
  issn         = {{0035-8711}},
  journal      = {{MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY}},
  keywords     = {{galaxies: active,galaxies: nuclei,quasars: emission lines,SUPERMASSIVE BLACK-HOLES,ACTIVE GALACTIC NUCLEI,SEYFERT-GALAXIES,STAR-FORMATION,FEEDBACK,EMISSION,COEVOLUTION,QUASARS,GROWTH,MODEL}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{5867--5880}},
  title        = {{BAT AGN spectroscopic survey, XIX : type 1 versus type 2 AGN dichotomy from the point of view of ionized outflows}},
  url          = {{http://dx.doi.org/10.1093/mnras/stz3386}},
  volume       = {{491}},
  year         = {{2020}},
}

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