The VLA-COSMOS 3 GHz Large Project: AGN and host- galaxy properties out to z ≲ 6

Delvecchio, I.; Smolčić, Vernesa; Zamorani, G.; Lagos, C. Del P.; Berta, S.; Delhaize, J.; Baran, Nikola; Alexander, D. M.; Rosario, D. J.; Gonzalez- Perez, V.; Ilbert, O.; Lacey, C. G.; Le Fèvre, O.; Miettinen, O.; Aravena, M.; Bondi, M.; Carilli, C.; Ciliegi, P.; Mooley, K.; Novak, Mladen; Schinnerer, E.; Capak, P.; Civano, F.; Fanidakis, N.; Herrera Ruiz, N.; Karim, A.; Laigle, C.; Marchesi, S.; McCracken, H. J.; Middleberg, E.; Salvato, M.; Tasca, L.

doi:10.1051/0004-6361/201629367

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Scientific paper - Original scientific paper

The VLA-COSMOS 3 GHz Large Project: AGN and host- galaxy properties out to z ≲ 6

Astronomy and Astrophysics, 602 (2017); A3. https://doi.org/10.1051/0004-6361/201629367

Delvecchio, I.; Smolčić, Vernesa; Zamorani, G.; Lagos, C. Del P.; Berta, S.; Delhaize, J.; Baran, Nikola; Alexander, D. M.; Rosario, D. J.; Gonzalez- Perez, V.; Ilbert, O.; Lacey, C. G.; Le Fèvre, O.; Miettinen, O.; Aravena, M.; Bondi, M.; Carilli, C.; Ciliegi, P.; Mooley, K.; Novak, Mladen; Schinnerer, E.; Capak, P.; Civano, F.; Fanidakis, N.; Herrera Ruiz, N.; Karim, A.; Laigle, C.; Marchesi, S.; McCracken, H. J.; Middleberg, E.; Salvato, M.; Tasca, L. More authors...

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APA 6th Edition

Delvecchio, I., Smolčić, V., Zamorani, G., Lagos, C. D. P., Berta, S., Delhaize, J. ... Tasca, L. (2017). The VLA-COSMOS 3 GHz Large Project: AGN and host- galaxy properties out to z ≲ 6. Astronomy and Astrophysics, 602.. doi: 10.1051/0004-6361/201629367

MLA 8th Edition

Delvecchio, I., et al. "The VLA-COSMOS 3 GHz Large Project: AGN and host- galaxy properties out to z ≲ 6." Astronomy and Astrophysics, vol. 602, 2017. https://doi.org/10.1051/0004-6361/201629367

Chicago 17th Edition

Delvecchio, I., Vernesa Smolčić, G. Zamorani, C. Del P. Lagos, S. Berta, J. Delhaize, Nikola Baran, et al. "The VLA-COSMOS 3 GHz Large Project: AGN and host- galaxy properties out to z ≲ 6." Astronomy and Astrophysics 602 (2017). https://doi.org/10.1051/0004-6361/201629367

Harvard

Delvecchio, I., et al. (2017) 'The VLA-COSMOS 3 GHz Large Project: AGN and host- galaxy properties out to z ≲ 6', Astronomy and Astrophysics, 602. doi: 10.1051/0004-6361/201629367

Vancouver

Delvecchio I, Smolčić V, Zamorani G, Lagos CDP, Berta S, Delhaize J, and sur.. The VLA-COSMOS 3 GHz Large Project: AGN and host- galaxy properties out to z ≲ 6. Astronomy and Astrophysics [Internet]. 2017 [cited 2024 April 18];602. doi: 10.1051/0004-6361/201629367

IEEE

I. Delvecchio, et al., "The VLA-COSMOS 3 GHz Large Project: AGN and host- galaxy properties out to z ≲ 6", Astronomy and Astrophysics, vol. 602, 2017. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:515830. [Accessed: 18 April 2024]

Cite this item: https://urn.nsk.hr/urn:nbn:hr:217:515830

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Title (english)	The VLA-COSMOS 3 GHz Large Project: AGN and host- galaxy properties out to z ≲ 6
Author	I. Delvecchio
Author	Vernesa Smolčić MBZ: 336180
Author	G. Zamorani
Author	C. Del P. Lagos
Author	S. Berta
Author	J. Delhaize
Author	Nikola Baran
Author	D. M. Alexander
Author	D. J. Rosario
Author	V. Gonzalez- Perez
Author	O. Ilbert
Author	C. G. Lacey
Author	O. Le Fèvre
Author	O. Miettinen
Author	M. Aravena
Author	M. Bondi
Author	C. Carilli
Author	P. Ciliegi
Author	K. Mooley
Author	Mladen Novak MBZ: 344074
Author	E. Schinnerer
Author	P. Capak
Author	F. Civano
Author	N. Fanidakis
Author	N. Herrera Ruiz
Author	A. Karim
Author	C. Laigle
Author	S. Marchesi
Author	H. J. McCracken
Author	E. Middleberg
Author	M. Salvato
Author	L. Tasca
Author's institution	University of Zagreb Faculty of Science (Department of Physics)
Scientific / art field, discipline and subdiscipline	NATURAL SCIENCES Physics Astronomy and Astrophysics
Abstract (english)	We explore the multiwavelength properties of AGN host galaxies for different classes of radio- selected AGN out to z ≲ 6 via a multiwavelength analysis of about 7700 radio sources in the COSMOS field. The sources were selected with the Very Large Array (VLA) at 3 GHz (10 cm) within the VLA– COSMOS 3 GHz Large Project, and cross-matched with multiwavelength ancillary data. This is the largest sample of high-redshift (z ≲ 6) radio sources with exquisite photometric coverage and redshift measurements available. We constructed a sample of moderate-to-high radiative luminosity AGN (HLAGN) via spectral energy distribution decomposition combined with standard X-ray and mid-infrared diagnostics. Within the remainder of the sample we further identified low-to- moderate radiative luminosity AGN (MLAGN) via excess in radio emission relative to the star formation rates in their host galaxies. We show that at each redshift our HLAGN havesystematically higher radiative luminosities than MLAGN and that their AGN power occurs predominantly in radiative form, while MLAGN display a substantial mechanical AGN luminosity component. We found significant differences in the host properties of the two AGN classes, as a function of redshift. At z< 1.5, MLAGN appear to reside in significantly more massive and less star-forming galaxies compared to HLAGN. At z> 1.5, we observed a reversal in the behaviour of the stellar mass distributions with the HLAGN populating the higher stellar mass tail. We interpret this finding as a possible hint of the downsizing of galaxies hosting HLAGN, with the most massive galaxies triggering AGN activity earlier than less massive galaxies, and then fading to MLAGN at lower redshifts. Our conclusion is that HLAGN and MLAGN samples trace two distinct galaxy and AGN populations in a wide range of redshifts, possibly resembling the radio AGN types often referred to as radiative- and jet- mode (or high- and low-excitation), respectively, whose properties might depend on the different availability of cold gas supplies.
Keywords (english)
Language	english
Publication type	Scientific paper - Original scientific paper
Publication status	Published
Peer review	Peer review - international
Publication version	Published version
Journal title	Astronomy and Astrophysics
Numbering	vol. 602, A3
p-ISSN	0004-6361
e-ISSN	1432-0746
DOI	https://doi.org/10.1051/0004-6361/201629367
URN:NBN	urn:nbn:hr:217:515830
Publication	2017
Document URL	https://www.aanda.org/articles/aa/abs/2017/06/aa29367-16/aa29367-16.html
Type of resource	Text
Access conditions	Open access
Terms of use
Public note	© 2017 ESO. Received 21 July 2016. Accepted 21 October 2016. Published online 13 June 2017. The authors are grateful to the anonymous referee for his/her careful reading and useful comments, which improved the content of this manuscript. I.D., V.S., J.D., M.N., and O.M. acknowledge the European Union’s Seventh Framework programme under grant agreement 337595 (ERC Starting Grant, “CoSMass”). N.B. acknowledges the European Union’s Seventh Framework programme under grant agreement 333654 (CIG, “AGN feedback”). C.L. is funded by a Discovery Early Career Researcher Award (DE150100618). Parts of this research were conducted by the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), through project number CE110001020. M.B. and P.C. acknowledge supports from the PRIN-INAF 2014. M.A. acknowledges partial support from FONDECYT through grant 1140099. A.K. acknowledges support by the Collaborative Research Council 956, subproject A1, funded by the Deutsche Forschungsgemeinschaft (DFG). This work was partially supported by NASA Chandra grant number GO3-14150C and GO3-14150B (FC, S.M.). I.D. is grateful to B. Magnelli for useful suggestions and to Takamitsu Miyaji for his help with CSTACK.
Created on	2020-02-28 21:18:08