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The Red Radio Ring: a gravitationally lensed hyperluminous infrared radio galaxy at z=2.553 discovered through citizen science

by Cox, B E , Wilcox, J , Lynn, S , Chavez, M , Hughes, D H , Marshall, P J , Jordan, C , Beswick, R , Montana, A , Schloerb, F P , Ross, N P , Geach, J E , More, A , Makler, M , Tecza, M , Rozo, E , Viero, M , P -E Belles , Paget, E , Erickson, N J , Kapadia, A , Parrish, M , Muxlow, T , Cornen, C , Erben, T , Y -T Lin , Verma, A , Mujica, R , Ivison, R J , Jackson, N , Zeballos, M , Wilson, G W , Lintott, C , Snyder, C , Leauthaud, A , Oguri, M , Rusu, E , Briain, D O , Simpson, R , Rykoff, E S , Harrington, K , Macmillan, C , Yun, M S , Harrison, P A , Miller, G , J -P Kneib , Sanchez-Arguelles, D , O'Brien, T , Narayanan, G , Baeten, E , Garrington, S , L Van Waerbeke

in C band / Galactic clusters / Galaxies / H alpha line / Image reconstruction / Infrared astronomy / Infrared imaging / Microprocessors / Morphology / Quasars / Radio emission / Radio galaxies / Red shift / Stars & galaxies

2015

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The Red Radio Ring: a gravitationally lensed hyperluminous infrared radio galaxy at z=2.553 discovered through citizen science

2015

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The Red Radio Ring: a gravitationally lensed hyperluminous infrared radio galaxy at z=2.553 discovered through citizen science

2015

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Paper

The Red Radio Ring: a gravitationally lensed hyperluminous infrared radio galaxy at z=2.553 discovered through citizen science

Cox, B E,

Wilcox, J,

Lynn, S,

Chavez, M,

Hughes, D H,

Marshall, P J,

Jordan, C,

Beswick, R,

Montana, A,

Schloerb, F P,

Ross, N P,

Geach, J E,

More, A,

Makler, M,

Tecza, M,

Rozo, E,

Viero, M,

P -E Belles,

Paget, E,

Erickson, N J,

Kapadia, A,

Parrish, M,

Muxlow, T,

Cornen, C,

Erben, T,

Y -T Lin,

Verma, A,

Mujica, R,

Ivison, R J,

Jackson, N,

Zeballos, M,

Wilson, G W,

Lintott, C,

Snyder, C,

Leauthaud, A,

Oguri, M,

Rusu, E,

Briain, D O,

Simpson, R,

Rykoff, E S,

Harrington, K,

Macmillan, C,

Yun, M S,

Harrison, P A,

Miller, G,

J -P Kneib,

Sanchez-Arguelles, D,

O'Brien, T,

Narayanan, G,

Baeten, E,

Garrington, S,

L Van Waerbeke

2015

Overview

We report the discovery of a gravitationally lensed hyperluminous infrared galaxy (L_IR~10^13 L_sun) with strong radio emission (L_1.4GHz~10^25 W/Hz) at z=2.553. The source was identified in the citizen science project SpaceWarps through the visual inspection of tens of thousands of iJKs colour composite images of Luminous Red Galaxies (LRGs), groups and clusters of galaxies and quasars. Appearing as a partial Einstein ring (r_e~3\") around an LRG at z=0.2, the galaxy is extremely bright in the sub-millimetre for a cosmological source, with the thermal dust emission approaching 1 Jy at peak. The redshift of the lensed galaxy is determined through the detection of the CO(3-2) molecular emission line with the Large Millimetre Telescope's Redshift Search Receiver and through [OIII] and H-alpha line detections in the near-infrared from Subaru/IRCS. We have resolved the radio emission with high resolution (300-400 mas) eMERLIN L-band and JVLA C-band imaging. These observations are used in combination with the near-infrared imaging to construct a lens model, which indicates a lensing magnification of ~10x. The source reconstruction appears to support a radio morphology comprised of a compact (<250 pc) core and more extended component, perhaps indicative of an active nucleus and jet or lobe.

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Publisher

Cornell University Library, arXiv.org

Subject

/ Image reconstruction

/ Infrared astronomy

/ Infrared imaging