A COMPREHENSIVE VIEW OF A STRONGLY LENSED<i>PLANCK</i>-ASSOCIATED SUBMILLIMETER GALAXY

Fu, Hai; Jullo, Eric; Cooray, Asantha; Bussmann, R. Shane; Ivison, R. J.; Pérez-Fournón, I.; Djorgovski, S. G.; Scoville, N. Z.; Yan, Lin; Riechers, Dominik A.; Aguirre, James E.; Auld, Robbie Richard; Baes, M.; Baker, A. J.; Bradford, M.; Cava, A.; Clements, D. L.; Dannerbauer, H.; Dariush, Aliakbar; Zotti, G. de; Dole, H.; Dunne, L.; Dye, S.; Eales, Steve; Frayer, David; Gavazzi, R.; Gurwell, M. A.; Harris, A. I.; Herranz, D.; Hopwood, R.; Hoyos, C.; Ibar, E.; Jarvis, M. J.; Kim, S.; Leeuw, Lerothodi Leonard; Lupu, Roxana; Maddox, S.; Martínez-Navajas, P.; Michalowski, Michal; Negrello, M.; Omont, A.; Rosenman, Marc B.; Scott, D.; Serjeant, S.; Smail, Ian; Swinbank, A. M.; Valiante, Elisabetta; Verma, Aprajita; Vieira, J. D.; Wardlow, J. L.; Werf, P. van der

doi:10.1088/0004-637x/753/2/134

Cited by 103 publications

(186 citation statements)

References 87 publications

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“…Fu et al (2012) showed that HATLAS J114637.9-001132 (HerBS-2) is a strongly lensed sub-mm galaxy, with a magnification between 7 to 17. Cox et al (2011) and Bussmann et al (2012) found that HATLAS J142413.9+022303 (HerBS-13) is a lensed sub-mm galaxy, with a magnification of 4.…”

Section: The Selection Of the Herbs Samplementioning

confidence: 99%

The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations

Bakx

Eales

Negrello

et al. 2017

Monthly Notices of the Royal Astronomical Society

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101

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We present the Herschel Bright Sources (HerBS) sample, a sample of bright, high-redshift Herschel sources detected in the 616.4 square degree H-ATLAS survey. The HerBS sample contains 209 galaxies, selected with a 500 µm flux density greater than 80 mJy and an estimated redshift greater than 2. The sample consists of a combination of HyLIRGs and lensed ULIRGs during the epoch of peak cosmic star formation. In this paper, we present SCUBA-2 observations at 850 µm of 189 galaxies of the HerBS sample, 152 of these sources were detected. We fit a spectral template to the Herschel-SPIRE and 850 µm SCUBA-2 flux densities of 22 sources with spectroscopically determined redshifts, using a two-component modified blackbody spectrum as a template. We find a cold-and hot-dust temperature of 21.29 +1.35 −1.66 K and 45.80 +2.88 −3.48 K, a cold-to-hot dust mass ratio of 26.62 +5.61 −6.74 and a β of 1.83 +0.14 −0.28 . The poor quality of the fit suggests that the sample of galaxies is too diverse to be explained by our simple model. Comparison of our sample to a galaxy evolution model indicates that the fraction of lenses is high. Out of the 152 SCUBA-2 detected galaxies, the model predicts 128.4 ± 2.1 of those galaxies to be lensed (84.5%). The SPIRE 500 µm flux suggests that out of all 209 HerBS sources, we expect 158.1 ± 1.7 lensed sources, giving a total lensing fraction of 76 per cent.

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Section: The Selection Of the Herbs Samplementioning

confidence: 99%

The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations

Bakx

Eales

Negrello

et al. 2017

Monthly Notices of the Royal Astronomical Society

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101

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“…"wet") merger (Riechers et al, 2011b) and the molecular gas properties show at least a two-phase medium with with T kin ∼ 100K and n gas ∼ 10 3 cm −3 gas combined with very dense gas at T kin ∼ 200K and n gas ∼ 10 5 cm −3 ). Another example is H-ATLAS J11460011 (Fu et al, 2012a) with S 500 ∼ 300 mJy. The source is lensed by four galaxies in the foreground providing differential magnification factors of 17, 8 and 7 for near-IR (stars), submm (dust), and radio (gas traced by CO) wavelengths.…”

Section: Lensed Dsfgsmentioning

confidence: 99%

Dusty star-forming galaxies at high redshift

2014

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Far-infrared and submillimeter wavelength surveys have now established the important role of dusty, star-forming galaxies (DSFGs) in the assembly of stellar mass and the evolution of massive galaxies in the Universe. The brightest of these galaxies have infrared luminosities in excess of 10 13 L with implied star-formation rates of thousands of solar masses per year. They represent the most intense starbursts in the Universe, yet many are completely optically obscured. Their easy detection at submm wavelengths is due to dust heated by ultraviolet radiation of newly forming stars. When summed up, all of the dusty, star-forming galaxies in the Universe produce an infrared radiation field that has an equal energy density as the direct starlight emission from all galaxies visible at ultraviolet and optical wavelengths. The bulk of this infrared extragalactic background light emanates from galaxies as diverse as gas-rich disks to mergers of intense starbursting galaxies. Major advances in far-infrared instrumentation in recent years, both spacebased and ground-based, has led to the detection of nearly a million DSFGs, yet our understanding of the underlying astrophysics that govern the start and end of the dusty starburst phase is still in nascent stage. This review is aimed at summarizing the current status of DSFG studies, focusing especially on the detailed characterization of the bestunderstood subset (submillimeter galaxies, who were summarized in the last review of this field over a decade ago, Blain et al. 2002), but also the selection and characterization of more recently discovered DSFG populations. We review DSFG population statistics, their physical properties including dust, gas and stellar contents, their environments, and current theoretical models related to the formation and evolution of these galaxies.

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“…Our method is complementary to that employed by Fu et al (2012), where they forward-model a single submm source through the gravitational lens, allowing the position to vary, to reproduce the observed morphology of their Submillimeter Array (SMA) and Very Large Array observations. With their model, they were able to show that the source of the gas and dust emission was offset from the optical counterpart.…”

Section: A F R a M E W O R K F O R F I T T I N G S E D S To C O N F Umentioning

confidence: 99%

Disentangling a group of lensed submm galaxies at z∼ 2.9

Mackenzie¹,

Scott²,

Smail³

et al. 2014

Monthly Notices of the Royal Astronomical Society

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MS 0451.6−0305 is a rich galaxy cluster whose strong lensing is particularly prominent at submm wavelengths. We combine new SCUBA-2 data with imaging from Herschel SPIRE and PACS and HST in order to try to understand the nature of the sources being lensed. In the region of the "giant submm arc," we uncover seven multiply imaged galaxies (up from the previously known three), of which six are found to be at a redshift of z ∼ 2.9, and possibly constitute an interacting system. Using a novel forward-modelling approach, we are able to simultaneously deblend and fit SEDs to the individual galaxies that contribute to the giant submm arc, constraining their dust temperatures, far infrared luminosities and star formation rates. The submm arc first identified by SCUBA can now be seen to be composed of at least five distinct sources, four of these within the galaxy group at z ∼ 2.9. The total unlensed luminosity for this galaxy group is (3.1 ± 0.3) × 10 12 L , which gives an unlensed star formation rate of (450 ± 50) M yr −1 . From the properties of this system, we see no evidence of evolution towards lower temperatures in the dust temperature versus far-infrared luminosity relation for high redshift galaxies.

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A COMPREHENSIVE VIEW OF A STRONGLY LENSEDPLANCK-ASSOCIATED SUBMILLIMETER GALAXY

Cited by 103 publications

References 87 publications

The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations

The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations

Dusty star-forming galaxies at high redshift

Disentangling a group of lensed submm galaxies at z∼ 2.9

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