Access to Astronomical Catalogues

← Click to display the menu
J/MNRAS/460/3202  Radio-loud AGN with relativistic jets (Olguin-Iglesias+, 2016)

The host galaxies of active galactic nuclei with powerful relativistic jets. Olguin-Iglesias A., Leon-Tavares J., Kotilainen J.K., Chavushyan V., Tornikoski M., Valtaoja E., Anorve C., Valdes J., Carrasco L. <Mon. Not. R. Astron. Soc., 460, 3202-3220 (2016)> =2016MNRAS.460.3202O (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Photometry, infrared ; Redshifts Keywords: galaxies: active - BL Lacertae objects: general - galaxies: evolution - galaxies: jets Abstract: We present deep near-infrared (NIR) images of a sample of 19 intermediate-redshift (0.3<z<1.0) radio-loud active galactic nuclei (AGN) with powerful relativistic jets (L1.4GHz>1027W/Hz), previously classified as flat-spectrum radio quasars. We also compile host galaxy and nuclear magnitudes for blazars from literature. The combined sample (this work and compilation) contains 100 radio-loud AGN with host galaxy detections and a broad range of radio luminosities L1.4GHz∼1023.7-1028.3W/Hz, allowing us to divide our sample into high-luminosity blazars (HLBs) and low-luminosity blazars (LLBs). The host galaxies of our sample are bright and seem to follow the µe-Reff relation for ellipticals and bulges. The two populations of blazars show different behaviours in the MK,nuclear-MK,bulge plane, where a statistically significant correlation is observed for HLBs. Although it may be affected by selection effects, this correlation suggests a close coupling between the accretion mode of the central supermassive black hole and its host galaxy, which could be interpreted in terms of AGN feedback. Our findings are consistent with semi-analytical models where low-luminosity AGN emit the bulk of their energy in the form of radio jets, producing a strong feedback mechanism, and high-luminosity AGN are affected by galaxy mergers and interactions, which provide a common supply of cold gas to feed both nuclear activity and star formation episodes. Description: The sample of sources analysed in this work is a sub-sample of variable radio-loud AGN monitored at 7mm (S7mm>1Jy) with the Aalto University Metsahovi Radio Observatory, in Finland ( since the last 30 years (Terasranta et al., 1992A&AS...94..121T; Teraesranta et al., 1998, Cat. J/A+AS/132/305; Leon-Tavares et al., 2011A&A...532A.146L; Nieppola et al., 2011, Cat. J/A+A/535/A69). According to the AGN unification scheme (Antonucci, 1993ARA&A..31..473A; Urry & Padovani, 1995PASP..107..803U), FSRQ and BL Lacs are those AGN whose relativistic jets point towards the Earth. Observations were made with the Nordic Optical Telescope (NOT) at La Roque de los Muchachos, La Palma, Canarias, Spain. They were conducted between 2011 May 09 and September 15 using the near-infrared Camera (NOTCam)3 on the NOT. NOTcam field of view is 4'x4' with a pixel scale of 0.234-arcsec/pixel designed to be used in the range from 0.8 to 2.5um in the bands J, H and K. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablea1.dat 99 100 Best-fitting parameters of the morphological fittings and general properties of the combined sample (this work and literature compilation)
See also: J/A+AS/132/305 : Extragal. radio sources at 22, 37 and 87GHz (Terasranta+ 1998) J/A+A/535/A69 : AGN Fermi/LAT γ-ray and 37GHz fluxes (Nieppola+, 2011) Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Galaxy name (HHMM+DDMM) 10- 14 F5.3 --- z Reported redshift for the source (1) 16- 17 I2 h RAh Right ascension (J2000) 19- 20 I2 min RAm Right ascension (J2000) 22- 25 F4.1 s RAs Right ascension (J2000) 27 A1 --- DE- Declination sign (J2000) 28- 29 I2 deg DEd Declination (J2000) 31- 32 I2 arcmin DEm Declination (J2000) 34- 37 F4.1 arcsec DEs Declination (J2000) 39- 43 A5 --- Type Object type (2) 46- 50 F5.2 Jy S1.4GHz 1.4GHz flux density (3) 52- 56 F5.2 [W/Hz] logL1.4GHz Luminosity at 1.4GHz 58 A1 --- Filt [RIJHK] Observed filter 60- 64 F5.2 mag mHost Host apparent magnitudes in the observed band 66- 70 F5.2 mag mNucl Nuclear apparent magnitudes in the observed band 72- 77 F6.2 mag MKHost Host absolute magnitudes transformed to K band assuming the colours in Section 2 79- 84 F6.2 mag MKNuc Nuclear absolute magnitudes transformed to K band assuming the colours in Section 2 86- 90 F5.2 kpc Re Effective radius converted to our adopted cosmology 92- 96 F5.2 mag/arcsec+2 SuBre ? Surface brightness at effective radius in K band 98- 99 I2 --- Ref References for fitting parameters (4)
Note (1): BL Lac objects redshifts were derived from weak stellar absorption features or weak emission lines. Note (2): Types as follows: BLLAC = BL Lac type object FSRQ = Flat Spectrum Radio Quasar Note (3): 1.4GHz flux density as retrieved from NASA/IPAC Extragalactic Database (NED);5. Note (4): References as follows: 1 = Falomo & Kotilainen (1999A&A...352...85F) 2 = Kotilainen et al. (2005A&A...440..831K) 3 = Nilsson et al. (2003A&A...400...95N) 4 = Kotilainen et al. (1998A&A...332..503K) 5 = Urry et al. (2000ApJ...532..816U) 6 = Cheung et al. (2003ApJ...599..155C) 7 = This work 8 = O'Dowd & Urry (2005ApJ...627...97O) 9 = Heidt et al. (2004A&A...418..813H) 10 = Nilsson et al. (2009A&A...505..601N)
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 23-Nov-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service