The Large Binocular Telescope

Hill, John M.; Green, R. F.; Ashby, Dave; Brynnel, Joar; Cushing, Norman J.; Little, John K.; Slagle, James H.; Wagner, R. M.

doi:10.1117/12.926636

Cited by 14 publications

(5 citation statements)

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“…High-resolution Ks-band images of the quasar P323+12 have been collected with the Large Binocular Telescope (LBT; Hill & Salinari 2004;Hill et al 2012) high with the Advanced Rayleigh-guided Ground-layer adaptive Optics System (ARGOS; Rabien et al 2010, 2019) coupled with LUCI 2 (i.e., LBT Utility Camera in the Infrared; Seifert et al 2003;Ageorges et al 2010). Data were collected on 2017 October 25 during an ARGOS commissioning run.…”

Section: Appendix a Atlas Of The Quasars Part Of The Requiem Surveymentioning

confidence: 99%

The REQUIEM Survey. I. A Search for Extended Lyα Nebular Emission Around 31 z > 5.7 Quasars

Farina

Battaia

Costa

et al. 2019

ApJ

106

143

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The discovery of quasars a few hundred megayears after the Big Bang represents a major challenge to our understanding of black holes as well as galaxy formation and evolution. Quasarsʼ luminosity is produced by extreme gas accretion onto black holes, which have already reached masses of M BH >10 9 M e by z∼6. Simultaneously, their host galaxies form hundreds of stars per year, using up gas in the process. To understand which environments are able to sustain the rapid formation of these extreme sources, we started a Very Large Telescope/Multi-Unit Spectroscopic Explorer (MUSE) effort aimed at characterizing the surroundings of a sample of 5.7<z<6.6 quasars, which we have dubbed the Reionization Epoch QUasar InvEstigation with MUSE (REQUIEM) survey. We here present results of our searches for extended Lyα halos around the first 31 targets observed as part of this program. Reaching 5σ surface brightness limits of 0.1-1.1×10 −17 erg s −1 cm −2 arcsec −2 over a 1 arcsec 2 aperture, we were able to unveil the presence of 12 Lyα nebulae, eight of which are newly discovered. The detected nebulae show a variety of emission properties and morphologies with luminosities ranging from 8×10 42 to 2×10 44 erg s −1 , FWHMs between 300 and 1700 km s −1 , sizes <30 pkpc, and redshifts consistent with those of the quasar host galaxies. As the first statistical and homogeneous investigation of the circumgalactic medium of massive galaxies at the end of the reionization epoch, the REQUIEM survey enables the study of the evolution of the cool gas surrounding quasars in the first 3 Gyr of the universe. A comparison with the extended Lyα emission observed around bright (M 1450 −25 mag) quasars at intermediate redshift indicates little variations on the properties of the cool gas from z∼6 to z∼3, followed by a decline in the average surface brightness down to z∼2.

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Section: Appendix a Atlas Of The Quasars Part Of The Requiem Surveymentioning

confidence: 99%

The REQUIEM Survey. I. A Search for Extended Lyα Nebular Emission Around 31 z > 5.7 Quasars

Farina

Battaia

Costa

et al. 2019

ApJ

106

143

View full text Add to dashboard Cite

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“…The development of current telescope technology is essential to increase the efficiency of scientific output. In particular, high spatial resolution over a large field of view is one such domain that was recently commissioned at the Large Binocular Telescope (LBT 1 , Hill 1994;Hill et al 2012) on Mount Graham in Arizona. The Advanced Rayleigh guided Ground layer adaptive Optics System, ARGOS 2 (Rabien et al 2018), equips the LBT with six green light (532 nm) lasers (three on each side situated on a circle with 2 radius (see Fig.…”

Section: Introductionmentioning

confidence: 99%

The Milky Way like galaxy NGC 6384 and its nuclear star cluster at high NIR spatial resolution using LBT/ARGOS commissioning data

Georgiev

Neumayer

Gässler

et al. 2019

Monthly Notices of the Royal Astronomical Society

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We analyse high spatial resolution near infra-red (NIR) imaging of NGC 6384, a Milky Way like galaxy, using ARGOS commissioning data at the Large Binocular Telescope (LBT). ARGOS provides a stable PSF FWHM = 0. 2−0. 3 AO correction of the ground layer across the LUCI 2 NIR camera 4 ×4 field by using six laser guide stars (three per telescope) and a natural guide star for tip-tilt sensing and guiding. Enabled by this high spatial resolution we analyse the structure of the nuclear star cluster (NSC) and the central kiloparsec of NGC 6384. We find via 2D modelling that the NSC (r eff 10 pc) is surrounded by a small (r eff 100 pc) and a larger Sersić (r eff 400 pc), all embedded within the NGC 6384 large-scale boxy/X-shaped bulge and disk. This proof-of-concept study shows that with the high spatial resolution achieved by ground-layer AO we can push such analysis to distances previously only accessible from space. SED-fitting to the NIR and optical HST photometry allowed to leverage the age-metallicityextinction degeneracies and derive the effective NSC properties of an young to old population mass ratio of 8% with M ,old 3.5×10 7 M , Age old, young = 10.9±1.3 Gyr and 226 Myr ±62%, metallicity [M/H]= −0.11 ± 0.16 and 0.33 ± 39% dex, and E(B−V) = 0.63 and 1.44 mag.

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“…In this analysis, we considered the baseline for the system framerate (1.5kHz) and the current value (1.0ms) for the deformable mirror settling time. Figure 4 shows the delay diagram for SOUL and FLAO 1 . The computation shows a total delay for SOUL of 1.79ms vs. 2.74ms for FLAO.…”

Section: Ao Loop Delaymentioning

confidence: 99%

“…SOUL: the Single conjugated adaptive Optics Upgrade for LBT [1] is an answer to the "2014 Call for Proposals for Instrument Upgrades and New Instruments" issued by LBTO. Currently, there are 4 SCAO systems [2] operating at LBT, all composed by an Adaptive Secondary Mirror [3] (ASM with 672 actuators) and a Pyramid Wavefront Sensor (PWFS with 30x30 sub-apertures).…”

Section: Introductionmentioning

confidence: 99%

SOUL: the Single conjugated adaptive Optics Upgrade for LBT

et al. 2016

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We present here SOUL: the Single conjugated adaptive Optics Upgrade for LBT. Soul will upgrade the wavefront sensors replacing the existing CCD detector with an EMCCD camera and the rest of the system in order to enable the closed loop operations at a faster cycle rate and with higher number of slopes. Thanks to reduced noise, higher number of pixel and framerate, we expect a gain (for a given SR) around 1.5-2 magnitudes at all wavelengths in the range 7.5 70% in I-band and 0.6asec seeing) and the sky coverage will be multiplied by a factor 5 at all galactic latitudes. Upgrading the SCAO systems at all the 4 focal stations, SOUL will provide these benefits in 2017 to the LBTI interferometer and in 2018 to the 2 LUCI NIR spectro-imagers. In the same year the SOUL correction will be exploited also by the new generation of LBT instruments: V-SHARK, SHARK-NIR and iLocater.

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The Large Binocular Telescope

Cited by 14 publications

References 0 publications

The REQUIEM Survey. I. A Search for Extended Lyα Nebular Emission Around 31 z > 5.7 Quasars

The REQUIEM Survey. I. A Search for Extended Lyα Nebular Emission Around 31 z > 5.7 Quasars

The Milky Way like galaxy NGC 6384 and its nuclear star cluster at high NIR spatial resolution using LBT/ARGOS commissioning data

SOUL: the Single conjugated adaptive Optics Upgrade for LBT

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