2014MNRAS.445..460G

Query : 2014MNRAS.445..460G

2014MNRAS.445..460G - Mon. Not. R. Astron. Soc., 445, 460-478 (2014/November-3)

A measurement of the millimetre emission and the Sunyaev-Zel'dovich effect associated with low-frequency radio sources.

GRALLA M.B., CRICHTON D., MARRIAGE T.A., MO W., AGUIRRE P., ADDISON G.E., ASBOTH V., BATTAGLIA N., BOCK J., BOND J.R., DEVLIN M.J., DUNNER R., HAJIAN A., HALPERN M., HILTON M., HINCKS A.D., HLOZEK R.A., HUFFENBERGER K.M., HUGHES J.P., IVISON R.J., KOSOWSKY A., LIN Y.-T., MARSDEN D., MENANTEAU F., MOODLEY K., MORALES G., NIEMACK M.D., OLIVER S., PAGE L.A., PARTRIDGE B., REESE E.D., ROJAS F., SEHGAL N., SIEVERS J., SIFON C., SPERGEL D.N., STAGGS S.T., SWITZER E.R., VIERO M.P., WOLLACK E.J. and ZEMCOV M.B.

Abstract (from CDS):

We present a statistical analysis of the millimetre-wavelength properties of 1.4GHz-selected sources and a detection of the Sunyaev-Zel'dovich (SZ) effect associated with the haloes that host them. We stack data at 148, 218 and 277GHz from the Atacama Cosmology Telescope at the positions of a large sample of radio AGN selected at 1.4GHz. The thermal SZ effect associated with the haloes that host the AGN is detected at the 5σ level through its spectral signature, representing a statistical detection of the SZ effect in some of the lowest mass haloes (average M200 ~ 1013 M_☉ h_70^-1) studied to date. The relation between the SZ effect and mass (based on weak lensing measurements of radio galaxies) is consistent with that measured by Planck for local bright galaxies. In the context of galaxy evolution models, this study confirms that galaxies with radio AGN also typically support hot gaseous haloes. Adding Herschel observations allows us to show that the SZ signal is not significantly contaminated by dust emission. Finally, we analyse the contribution of radio sources to the angular power spectrum of the cosmic microwave background.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): galaxies: active - galaxies: haloes - galaxies: statistics - radio continuum: galaxies

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
2 LEDA 74808 EmG 03 38 19.265 -35 07 44.74   15.60 15.34     ~ 65 0
3 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
4 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2

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