Discovery of a lensed ultrabright submillimeter galaxy at z = 2.0439. Póster
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Knowledge AreaFísica Aplicada
PublisherSociedad Española de Astronomía
Bibliographic CitationDíaz Sánchez, A, Iglesias-Groth, S., Rebolo, J. H. Dannerbauer, H. Discovery of a lensed ultrabright submillimeter galaxy at z = 2.0439. En: Highlights on Spanish Astrophysics X, Proceedings of the XIII Scientific Meeting of the Spanish Astronomical Society held on July 16-20, 2018, in Salamanca, Spain, ISBN 978-84-09-09331-1. B. Montesinos, A. Asensio Ramos, F. Buitrago, R. Schödel, E. Villaver, S. Pérez-Hoyos, I. Ordóñez-Etxeberria (eds.) p. 211-211 Póster.
We report an ultra-bright lensed submillimeter galaxy (SMG) at z = 2.0439, WISE J132934.18+224327.3, identified as a result of a full-sky cross-correlation of the AllWISE and Planck compact source catalogs aimed to search for bright analogs of the submillimeter galaxy SMMJ2135, the Cosmic Eyelash. Inspection of archival SCUBA-2 observations of the candidates revealed a source with fluxes (S850μm= 130 mJy) consistent with the Planck measurements. The centroid of the SCUBA-2 source coincides within 1 arcsec with the position of the AllWISE mid-IR source, and, remarkably, with an arc shaped lensed galaxy in HST images at visible wavelengths. Low-resolution rest-frame UV-optical spectroscopy of this lensed galaxy obtained with 10.4 m GTC reveals the typical absorption lines of a starburst galaxy. Gemini-N near-IR spectroscopy provided a clear detection of H_ emission. The lensed source appears to be gravitationally magnified by a massive foreground galaxy cluster lens at z = 0.44, modeling ...
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