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J/A+A/602/A123  AGN vs. host galaxy properties in COSMOS field (Lanzuisi+, 2017)

AGN vs. host galaxy properties in the COSMOS field. Lanzuisi G., Delvecchio I., Berta S., Brusa M., Comastri A., Gilli R., Gruppioni C., Marchesi S., Perna M., Pozzi F., Salvato M., Symeonidis M., Vignali C., Vito F., Volonteri M., Zamorani G. <Astron. Astrophys. 602, A123 (2017)> =2017A&A...602A.123L (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Galaxies, IR ; X-ray sources Keywords: galaxies: active - galaxies: nuclei - galaxies: evolution - infrared: galaxies - X-ray: galaxies Abstract: The coeval AGN and galaxy evolution and the observed local relations between SMBHs and galaxy properties suggest some connection or feedback between SMBH growth and galaxy build-up. We looked for correlations between properties of X-ray detected AGN and their FIR detected host galaxies, to find quantitative evidences for this connection, highly debated in the latest years. We exploit the rich multi-wavelength data set available in the COSMOS field for a large sample (692 sources) of AGN and their hosts, in the redshift range 0.1<z<4. We use X-ray data to select AGN and determine their properties (intrinsic luminosity and nuclear obscuration), and broad-band SED fitting to derive host galaxy properties (stellar mass M* and star formation rate SFR). We find that the AGN 2-10keV luminosity (LX) and the host 8-1000um star formation luminosity (LSFIR) are significantly correlated. However, the average host LSFIR has a flat distribution in bins of AGN LX, while the average AGN LX increases in bins of host LSFIR, with logarithmic slope of ∼0.7, in the redshifts range 0.4<z<1.2. We also discuss the comparison between the distribution of these two quantities and the predictions from hydro-dynamical simulations. Finally we find that the average column density (NH) shows a positive correlation with the host M*, at all redshifts, but not with the SFR (or LSFIR). This translates into a negative correlation with specific SFR. Our results are in agreement with the idea that BH accretion and SF rates are correlated, but occur with different variability time scales. The presence of a positive correlation between NH and host M* suggests that the X-ray NH is not entirely due to the circum-nuclear obscuring torus, but may also include a contribution from the host galaxy. Description: Multiwavelength properties of the 692 AGN-host systems detected both in the X-ray and in the FIR (the X-FIR sample). For each galaxy are given ID from Capak et al., 2007, Cat. II/284; right ascension and declination of the optical/IR counterpart; redshift; redshift flag (s for spectroscopic or p photometric); Log(LSFIR) with 1sigma errors; Log(M*) with 1sigma errors; SFR derived from LSF; Log(NH) with 1sigma errors or upper limits; Log(LX) with 1sigma errors; Log(LBol) computed from LX using Marconi et al. (2004MNRAS.351..169M); XMM-COSMOS and Chandra-COSMOS ID. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 118 692 Multiwavelength properties of the 692 sources in the X-FIR sample
See also: II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007) J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007) J/ApJS/172/29 : XMM-Newton survey in COSMOS field. I. (Hasinger+, 2007) J/A+A/497/635 : XMM-Newton wide-field survey in COSMOS field (Cappelluti+, 2009) J/ApJ/696/1195 : COSMOS AGN spectroscopic survey. I. (Trump+, 2009) J/A+A/512/A34 : XMM-COSMOS Type 1 AGNs (Lusso+, 2010) J/A+A/584/A106 : Catalogues of variable AGNs (Simm+, 2015) J/ApJ/716/348 : The XMM-Newton survey of the COSMOS field (Brusa+, 2010) J/A+A/534/A110 : Type-2 AGN from XMM-COSMOS bolometric output (Lusso+, 2011) J/ApJ/742/61 : Photometric redshift of AGNs from XMM- and C-COSMOS (Salvato+ 2011) J/ApJ/759/6 : SEDs of type I AGN in COSMOS. I. XMM-COSMOS (Elvis+, 2012) J/MNRAS/438/1288 : SEDs of type I AGN in XMM-COSMOS. II. (Hao+, 2014) J/ApJS/184/158 : Chandra COSMOS survey I. (Elvis+, 2009) J/ApJS/201/30 : The Chandra COSMOS survey. III. (Civano+, 2012) J/ApJ/819/62 : The COSMOS-Legacy Survey (CLS) catalog (Civano+, 2016) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 7 I7 --- ID ID from Capak et al. (2007, Cat. II/284), Photo-z COSMOS identifier from Ilbert el al. (2009, Cat. J/ApJ/690/1236) 9- 17 F9.5 deg RAdeg Right ascension (J2000.0) 19- 26 F8.6 deg DEdeg Declination (J2000.0) 28- 33 F6.4 --- z Redshift 35- 38 A4 --- Flag Redshift flag (spectroscopic or photometric) 40- 44 F5.2 [10-7W] logLIR Log of IR luminosity from SF 46- 49 F4.2 [10-7W] e_logLIR Error in Log space of LIR 51- 55 F5.2 [Msun] logM* Log of the stellar mass 57- 60 F4.2 [Msun] e_logM* Error in Log space of M* 62- 66 F5.2 [Msun/yr] logSFR Log of the Star formation rate 68 A1 --- l_logNH Upper limit flag on logNH 69- 73 F5.2 [cm-2] logNH Log of X-ray column density 75- 79 F5.2 [cm-2] e_logNH ?=-1 Error low in Log space on column density (1) 81- 85 F5.2 [cm-2] E_logNH ?=-1 Error up in Log space on column density (1) 87- 91 F5.2 [10-7W] logLX Log of X-ray luminosity 93- 96 F4.2 [10-7W] e_logLX Error in Log space on LX 98-102 F5.2 [10-7W] logLbol Log of Bolometric luminosity from Marconi et al. (2004MNRAS.351..169M) 104-108 I5 --- XMMID ? ID from XMM-Cosmos Catalog (Brusa et al., 2010, Cat. J/ApJ/716/348), XMMC NNNNN in Simbad 110-118 A9 --- CHAID ID from Chandra-Cosmos Legacy (Marchesi et al., 2016ApJ...832...70A, from Civano et al., 2016, Cat. J/ApJ/819/62), lid_NNNN or cid_NNNN
Note (1): For sources with e_logNH and E_logNH=-1 the value of LogNH is the upper-limit on column density.
Acknowledgements: Giorgio Lanzuisi, giorgio.lanzuisi2(at)
(End) Giorgio Lanzuis [DIFA-Unibo, Italia], Patricia Vannier [CDS] 08-Mar-2017
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