2010A&A...518L..31I

Query : 2010A&A...518L..31I

2010A&A...518L..31I - Astronomy and Astrophysics, volume 518, L31-31 (2010/7-2)

The far-infrared/radio correlation as probed by Herschel.

IVISON R.J., MAGNELLI B., IBAR E., ANDREANI P., ELBAZ D., ALTIERI B., AMBLARD A., ARUMUGAM V., AULD R., AUSSEL H., BABBEDGE T., BERTA S., BLAIN A., BOCK J., BONGIOVANNI A., BOSELLI A., BUAT V., BURGARELLA D., CASTRO-RODRIGUEZ N., CAVA A., CEPA J., CHANIAL P., CIMATTI A., CIRASUOLO M., CLEMENTS D.L., CONLEY A., CONVERSI L., COORAY A., DADDI E., DOMINGUEZ H., DOWELL C.D., DWEK E., EALES S., FARRAH D., FOERSTER SCHREIBER N., FOX M., FRANCESCHINI A., GEAR W., GENZEL R., GLENN J., GRIFFIN M., GRUPPIONI C., HALPERN M., HATZIMINAOGLOU E., ISAAK K., LAGACHE G., LEVENSON L., LU N., LUTZ D., MADDEN S., MAFFEI B., MAGDIS G., MAINETTI G., MAIOLINO R., MARCHETTI L., MORRISON G.E., MORTIER A.M.J., NGUYEN H.T., NORDON R., O'HALLORAN B., OLIVER S.J., OMONT A., OWEN F.N., PAGE M.J., PANUZZO P., PAPAGEORGIOU A., PEARSON C.P., PEREZ-FOURNON I., PEREZ GARCIA A.M., POGLITSCH A., POHLEN M., POPESSO P., POZZI F., RAWLINGS J.I., RAYMOND G., RIGOPOULOU D., RIGUCCINI L., RIZZO D., RODIGHIERO G., ROSEBOOM I.G., ROWAN-ROBINSON M., SAINTONGE A., SANCHEZ PORTAL M., SANTINI P., SCHULZ B., SCOTT D., SEYMOUR N., SHAO L., SHUPE D.L., SMITH A.J., STEVENS J.A., STURM E., SYMEONIDIS M., TACCONI L., TRICHAS M., TUGWELL K.E., VACCARI M., VALTCHANOV I., VIEIRA J., VIGROUX L., WANG L., WARD R., WRIGHT G., XU C.K. and ZEMCOV M.

Abstract (from CDS):

We set out to determine the ratio, q_IR, of rest-frame 8-1000-µm flux, S_IR, to monochromatic radio flux, S_1.4GHz, for galaxies selected at far-infrared (IR) and radio wavelengths, to search for signs that the ratio evolves with redshift, luminosity or dust temperature, T_d, and to identify any far-IR-bright outliers - useful laboratories for exploring why the far-IR/radio correlation (FIRRC) is generally so tight when the prevailing theory suggests variations are almost inevitable. We use flux-limited 250-µm and 1.4-GHz samples, obtained using Herschel and the Very Large Array (VLA) in GOODS-North (-N). We determine bolometric IR output using ten bands spanning λ_obs=24-1250µm, exploiting data from PACS and SPIRE (PEP; HerMES), as well as Spitzer, SCUBA, AzTEC and MAMBO. We also explore the properties of an L_IR-matched sample, designed to reveal evolution of q_IR with redshift, spanning log L_IR=11-12L_☉ and z=0-2, by stacking into the radio and far-IR images. For 1.4-GHz-selected galaxies in GOODS-N, we see tentative evidence of a break in the flux ratio, q_IR, at l1.4∼10^22.7W/Hz, where active galactic nuclei (AGN) are starting to dominate the radio power density, and of weaker correlations with redshift and T_d. From our 250-µm-selected sample we identify a small number of far-IR-bright outliers, and see trends of q_IR with l1.4, L_IR, T_d and redshift, noting that some of these are inter-related. For our L_IR-matched sample, there is no evidence that q_IR changes significantly as we move back into the epoch of galaxy formation: we find q_IR∝(1+z)^γ, where γ=-0.04±0.03 at z=0-2; however, discounting the least reliable data at z<0.5 we find γ=-0.26±0.07, modest evolution which may be related to the radio background seen by ARCADE2, perhaps driven by <10-µJy radio activity amongst ordinary star-forming galaxies at z>1.

Abstract Copyright: ∼

Journal keyword(s): galaxies: evolution - galaxies: starburst - infrared: galaxies - submillimeter: galaxies - radio continuum: galaxies

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	NAME GOODS-N Field	reg	12 36 55.0	+62 14 15						~	1077	1

Query : 2010A&A...518L..31I

Basic data :

NAME GOODS-N Field -- Region defined in the Sky
Origin of the objects types : (Ref) Object type as listed in the reference "Ref" (acronym) Object type linked to the acronym according to the original reference () Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases Other object types:	`reg ()`
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference ICRS coord. (ep=J2000) :	`12 36 55.0 +62 14 15 [ ] D 2011ApJ...732..126M`
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference FK4 coord. (ep=B1950 eq=1950) :	`12 34 41.1 +62 30 45 [ ]`
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference Gal coord. (ep=J2000) :	`125.8654 +54.8080 [ ]`

', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad

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References (1077 between 1850 and 2023) (Total 1077)
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