CANDIDATE GRAVITATIONALLY LENSED DUSTY STAR-FORMING GALAXIES IN THE HERSCHEL WIDE AREA SURVEYS
CANDIDATE GRAVITATIONALLY LENSED DUSTY STAR-FORMING GALAXIES IN THE HERSCHEL WIDE AREA SURVEYS
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DOI：
10.3847/0004-637x/823/1/17
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发表时间：
2016-01
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通讯作者：
H. Nayyeri;M. Keele;A. Cooray;D. Riechers;R. Ivison;A. Harris;D. Frayer;A. Baker;S. Chapman;S. Eales;D. Farrah;H. Fu;L. Marchetti;R. Marques-Chaves;P. Mart́ınez-Navajas;S. Oliver;A. Omont;I. Pérez-Fournon;D. Scott;Mattia Vaccari;J. Vieira;M. Viero;L. Wang;J. Wardlow
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作者：
H. Nayyeri;M. Keele;A. Cooray;D. Riechers;R. Ivison;A. Harris;D. Frayer;A. Baker;S. Chapman;S. Eales;D. Farrah;H. Fu;L. Marchetti;R. Marques-Chaves;P. Mart́ınez-Navajas;S. Oliver;A. Omont;I. Pérez-Fournon;D. Scott;Mattia Vaccari;J. Vieira;M. Viero;L. Wang;J. Wardlow
我们提出了来自 HerMES 大模式巡天和赫歇尔条纹 82 巡天的候选引力透镜尘埃恒星形成星系 (DSFG) 列表。这些部分重叠的勘测总共覆盖了 372 度的天空。去除局部螺旋星系和已知的无线电响亮耀斑体后，我们的透镜 DSFG 候选列表由 77 个 500 μm 通量密度 (S500) 大于 100 mJy 的源组成。这些来源是尘埃星暴星系，类似于通过水肺潜水发现的第一个明亮的亚毫米星系（SMG）。我们预计这个列表中的很大一部分是强透镜状的，一小部分是由明亮的 SMG-SMG 合并组成，表现为超亮红外星系 (L IR > 10 13 L ⊙ )。 77 个候选星系中的 13 个具有来自地面干涉仪 CO 光谱的光谱红移，使它们的 z > 1 且远高于前景透镜星系的红移。我们样品的表面密度为 0.21 ± 0.03 deg−2。我们对一些候选者进行了后续成像，以确认它们的透镜性质。这里提供的样本是进行高分辨率成像和光谱观测的理想工具，以了解遥远星系中星暴现象的详细特性。
We present a list of candidate gravitationally lensed dusty star-forming galaxies (DSFGs) from the HerMES Large Mode Survey and the Herschel Stripe 82 Survey. Together, these partially overlapping surveys cover 372 deg2 on the sky. After removing local spiral galaxies and known radio-loud blazars, our candidate list of lensed DSFGs is composed of 77 sources with 500 μm flux densities (S500) greater than 100 mJy. Such sources are dusty starburst galaxies similar to the first bright sub-millimeter galaxies (SMGs) discovered with SCUBA. We expect a large fraction of this list to be strongly lensed, with a small fraction made up of bright SMG–SMG mergers that appear as hyper-luminous infrared galaxies ( L IR > 10 13 L ⊙ ). Thirteen of the 77 candidates have spectroscopic redshifts from CO spectroscopy with ground-based interferometers, putting them at z > 1 and well above the redshift of the foreground lensing galaxies. The surface density of our sample is 0.21 ± 0.03 deg−2. We present follow-up imaging of a few of the candidates to confirm their lensing nature. The sample presented here is an ideal tool for higher-resolution imaging and spectroscopic observations to understand the detailed properties of starburst phenomena in distant galaxies.