prikaz prve stranice dokumenta The VLA-COSMOS 3 GHz Large Project: Star formation properties and radio luminosity functions of AGN with moderate-to-high radiative luminosities out to z∼6
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Scientific paper - Original scientific paper
The VLA-COSMOS 3 GHz Large Project: Star formation properties and radio luminosity functions of AGN with moderate-to-high radiative luminosities out to z∼6
Astronomy and Astrophysics, 620 (2018); A192. https://doi.org/10.1051/0004-6361/201833935
Ceraj, Lana; Smolčić, Vernesa; Delvecchio, Ivan; Novak, Mladen; Zamorani, Giovanni; Delhaize, Jacinta; Schinnerer, Eva; Vardoulaki, Eleni; Herrera Ruiz, Noelia

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Ceraj, L., Smolčić, V., Delvecchio, I., Novak, M., Zamorani, G., Delhaize, J. ... Herrera Ruiz, N. (2018). The VLA-COSMOS 3 GHz Large Project: Star formation properties and radio luminosity functions of AGN with moderate-to-high radiative luminosities out to z∼6. Astronomy and Astrophysics, 620.. doi: 10.1051/0004-6361/201833935

Ceraj, Lana, et al. "The VLA-COSMOS 3 GHz Large Project: Star formation properties and radio luminosity functions of AGN with moderate-to-high radiative luminosities out to z∼6." Astronomy and Astrophysics, vol. 620, 2018. https://doi.org/10.1051/0004-6361/201833935

Ceraj, Lana, Vernesa Smolčić, Ivan Delvecchio, Mladen Novak, Giovanni Zamorani, Jacinta Delhaize, Eva Schinnerer, Eleni Vardoulaki and Noelia Herrera Ruiz. "The VLA-COSMOS 3 GHz Large Project: Star formation properties and radio luminosity functions of AGN with moderate-to-high radiative luminosities out to z∼6." Astronomy and Astrophysics 620 (2018). https://doi.org/10.1051/0004-6361/201833935

Ceraj, L., et al. (2018) 'The VLA-COSMOS 3 GHz Large Project: Star formation properties and radio luminosity functions of AGN with moderate-to-high radiative luminosities out to z∼6', Astronomy and Astrophysics, 620. doi: 10.1051/0004-6361/201833935

Ceraj L, Smolčić V, Delvecchio I, Novak M, Zamorani G, Delhaize J, and sur.. The VLA-COSMOS 3 GHz Large Project: Star formation properties and radio luminosity functions of AGN with moderate-to-high radiative luminosities out to z∼6. Astronomy and Astrophysics [Internet]. 2018 [cited 2024 November 29];620. doi: 10.1051/0004-6361/201833935

L. Ceraj, et al., "The VLA-COSMOS 3 GHz Large Project: Star formation properties and radio luminosity functions of AGN with moderate-to-high radiative luminosities out to z∼6", Astronomy and Astrophysics, vol. 620, 2018. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:707753. [Accessed: 29 November 2024]

Metadata
Title (english)The VLA-COSMOS 3 GHz Large Project: Star formation properties and radio luminosity functions of AGN with moderate-to-high radiative luminosities out to z∼6
AuthorLana Ceraj
MBZ: 352661
AuthorVernesa Smolčić
MBZ: 336180
AuthorIvan Delvecchio
AuthorMladen Novak
MBZ: 344074
AuthorGiovanni Zamorani
AuthorJacinta Delhaize
AuthorEva Schinnerer
AuthorEleni Vardoulaki
AuthorNoelia Herrera Ruiz
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
We have studied a sample of 1604 moderate-to-high radiative luminosity active galactic nuclei (HLAGN) selected at 3 GHz within the VLA-COSMOS 3 GHz Large Project. These were classified by combining multiple AGN diagnostics: X-ray data, mid-infrared data and broadband spectral energy distribution fitting. We decomposed the total radio 1.4 GHz luminosity (L_1.4GHz, TOT) into the emission originating from star formation and AGN activity by measuring the excess in L_1.4GHz, TOT relative to the infrared-radio correlation of star-forming galaxies. To quantify the excess, for each source we calculated the AGN fraction (f_AGN) defined as the fractional contribution of AGN activity to L_1.4GHz, TOT. The majority of the HLAGN, (68.0+-1.5)%, are dominated by star-forming processes(f_AGN<=0.5), while (32.0+-1.5)% are dominated by AGN-related radio emission (0.5 < f_AGN <=1).We used the AGN-related 1.4 GHz emission to derive the 1.4 GHz AGN luminosity functions of HLAGN. By assuming pure density and pure luminosity evolution models we constrained their cosmic evolution out to z~6, finding Phi(z)* ~(1+z)^((2.64+-0.10)+(-0.61+-0.04)z) and L*(z)~(1+z)^((3.97+-0.15)+(-0.92+-0.06)z).These evolutionary laws show that the number and luminosity density of HLAGN increased from higher redshifts (z~6) up to a maximum in the redshift range 1 < z < 2.5, followed by a decline toward local values. By scaling the 1.4 GHz AGN luminosity to kinetic luminosity using the standard conversion, we estimate the kinetic luminosity density as a function of redshift. We compare our result to the semi-analytic models of radio mode feedback, and find that this feedback could have played an important role in the context of AGN-host co-evolution in HLAGN which shows evidence of AGN-related radio emission (f_AGN > 0).
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleAstronomy and Astrophysics
Numberingvol. 620, A192
p-ISSN0004-6361
e-ISSN1432-0746
DOIhttps://doi.org/10.1051/0004-6361/201833935
URN:NBNurn:nbn:hr:217:707753
Publication2018
Document URLhttps://www.aanda.org/articles/aa/abs/2018/12/aa33935-18/aa33935-18.html
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© ESO 2018. Received: 24 July 2018; Accepted: 30 October 2018; Published online: 17 December 2018.
Created on2020-02-29 21:52:53