%0 Generic %1 pope2017early %A Pope, Alexandra %A Montana, Alfredo %A Battisti, Andrew %A Limousin, Marceau %A Marchesini, Danilo %A Wilson, Grant W. %A Alberts, Stacey %A Aretxaga, Itziar %A Avila-Reese, Vladimir %A Bermejo-Climent, Jose Ramon %A Brammer, Gabriel %A Bravo-Alfaro, Hector %A Calzetti, Daniela %A Chary, Ranga-Ram %A Cybulski, Ryan %A Giavalisco, Mauro %A Hughes, David %A Kado-Fong, Erin %A Keller, Erica %A Kirkpatrick, Allison %A Labbe, Ivo %A Lange-Vagle, Daniel %A Lowenthal, James %A Murphy, Eric %A Oesch, Pascal %A Gonzalez, Daniel Rosa %A Sanchez-Arguelles, David %A Shipley, Heath %A Stefanon, Mauro %A Vega, Olga %A Whitaker, Katherine %A Williams, Christina C. %A Yun, Min %A Zavala, Jorge A. %A Zeballos, Milagros %D 2017 %K detection high-z mm %T Early Science with the Large Millimeter Telescope: Detection of dust emission in multiple images of a normal galaxy at $z>4$ lensed by a Frontier Fields cluster %U http://arxiv.org/abs/1703.04535 %X We directly detect dust emission in an optically-detected, multiply-imaged galaxy lensed by the Frontier Fields cluster MACSJ0717.5+3745. We detect two images of the same galaxy at 1.1mm with the AzTEC camera on the Large Millimeter Telescope leaving no ambiguity in the counterpart identification. This galaxy, MACS071_Az9, is at z>4 and the strong lensing model (mu=7.5) allows us to calculate an intrinsic IR luminosity of 9.7e10 Lsun and an obscured star formation rate of 14.6 +/- 4.5 Msun/yr. The unobscured star formation rate from the UV is only 4.1 +/- 0.3 Msun/yr which means the total star formation rate (18.7 +/- 4.5 Msun/yr) is dominated (75-80%) by the obscured component. With an intrinsic stellar mass of only 6.9e9Msun, MACS0717_Az9 is one of only a handful of z>4 galaxies at these lower masses that is detected in dust emission. This galaxy lies close to the estimated star formation sequence at this epoch. However, it does not lie on the dust obscuration relation (IRX-beta) for local starburst galaxies and is instead consistent with the Small Magellanic Cloud (SMC) attenuation law. This remarkable lower mass galaxy showing signs of both low metallicity and high dust content may challenge our picture of dust production in the early Universe.

@misc{pope2017early, abstract = {We directly detect dust emission in an optically-detected, multiply-imaged galaxy lensed by the Frontier Fields cluster MACSJ0717.5+3745. We detect two images of the same galaxy at 1.1mm with the AzTEC camera on the Large Millimeter Telescope leaving no ambiguity in the counterpart identification. This galaxy, MACS071_Az9, is at z>4 and the strong lensing model (mu=7.5) allows us to calculate an intrinsic IR luminosity of 9.7e10 Lsun and an obscured star formation rate of 14.6 +/- 4.5 Msun/yr. The unobscured star formation rate from the UV is only 4.1 +/- 0.3 Msun/yr which means the total star formation rate (18.7 +/- 4.5 Msun/yr) is dominated (75-80%) by the obscured component. With an intrinsic stellar mass of only 6.9e9Msun, MACS0717_Az9 is one of only a handful of z>4 galaxies at these lower masses that is detected in dust emission. This galaxy lies close to the estimated star formation sequence at this epoch. However, it does not lie on the dust obscuration relation (IRX-beta) for local starburst galaxies and is instead consistent with the Small Magellanic Cloud (SMC) attenuation law. This remarkable lower mass galaxy showing signs of both low metallicity and high dust content may challenge our picture of dust production in the early Universe.}, added-at = {2017-03-16T11:06:27.000+0100}, author = {Pope, Alexandra and Montana, Alfredo and Battisti, Andrew and Limousin, Marceau and Marchesini, Danilo and Wilson, Grant W. and Alberts, Stacey and Aretxaga, Itziar and Avila-Reese, Vladimir and Bermejo-Climent, Jose Ramon and Brammer, Gabriel and Bravo-Alfaro, Hector and Calzetti, Daniela and Chary, Ranga-Ram and Cybulski, Ryan and Giavalisco, Mauro and Hughes, David and Kado-Fong, Erin and Keller, Erica and Kirkpatrick, Allison and Labbe, Ivo and Lange-Vagle, Daniel and Lowenthal, James and Murphy, Eric and Oesch, Pascal and Gonzalez, Daniel Rosa and Sanchez-Arguelles, David and Shipley, Heath and Stefanon, Mauro and Vega, Olga and Whitaker, Katherine and Williams, Christina C. and Yun, Min and Zavala, Jorge A. and Zeballos, Milagros}, biburl = {https://www.bibsonomy.org/bibtex/2887528a9d538cce8fa3006957d71f60b/miki}, description = {[1703.04535] Early Science with the Large Millimeter Telescope: Detection of dust emission in multiple images of a normal galaxy at $z>4$ lensed by a Frontier Fields cluster}, interhash = {a76c814da919e0626e9773627006a158}, intrahash = {887528a9d538cce8fa3006957d71f60b}, keywords = {detection high-z mm}, note = {cite arxiv:1703.04535Comment: 12 pages, 6 figures, accepted for publication in ApJ}, timestamp = {2017-03-16T11:06:27.000+0100}, title = {Early Science with the Large Millimeter Telescope: Detection of dust emission in multiple images of a normal galaxy at $z>4$ lensed by a Frontier Fields cluster}, url = {http://arxiv.org/abs/1703.04535}, year = 2017 }