ARGOS at the LBT

Rabien, S.; Angel, Roger; Beckmann, U.; Busoni, Lorenzo; Belli, Sirio; Bonaglia, Marco; Borelli, J. L.; Brynnel, Joar; Buschkamp, P.; Cardwell, Andrew; Contursi, A.; Connot, C.; Davies, R. I.; Deysenroth, M.; Durney, Olivier; Eisenhauer, F.; Elberich, M.; Esposito, Simone; Frye, Brenda; Gäessler, Wolfgang; Gasho, Victor; Gemperlein, Hans; Genzel, R.; Georgiev, Iskren Y.; Green, R.; Hart, Michael; Kohlmann, C.; Kulas, M.; Lefebvre, Michael; Mazzoni, Tommaso; Noenickx, Jamison; Xivry, Gilles Orban de; Ott, Thomas; Peter, D.; Puglisi, Alfio; Qin, Yujing; Quirrenbach, A.; Raab, Walfried; Rademacher, Matt; Rahmer, Gustavo; Rosensteiner, Matthias; Rix, Hans─Walter; Salinari, Piero; Schwab, Christian; Sivitilli, A.; Steinmetz, Matthias; Storm, J.; Veillet, Christian; Weigelt, G.; Ziegleder, J.

doi:10.1051/0004-6361/201833716

Cited by 19 publications

(9 citation statements)

References 68 publications

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“…We acquired imaging of G165 in K band using the LBT Advanced Rayleigh Ground layer adaptive Optics System (ARGOS; Rabien et al 2019) during instrument commissioning time in December 2016 (2016B, PI: Frye). ARGOS corrects ground-layer distortions in the imaging of the two 8.4 m apertures using two threebeam constellation lasers as guide stars that are fixed to each aperture.…”

Section: Lbt Observationsmentioning

confidence: 99%

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PLCK G165.7+67.0: Analysis of a Massive Lensing Cluster in a Hubble Space Telescope Census of Submillimeter Giant Arcs Selected Using Planck/Herschel

Frye

Pascale

Qin

et al. 2019

ApJ

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We present Hubble Space Telescope WFC3-IR imaging in the fields of six apparently bright dusty star-forming galaxies (DSFGs) at z = 2 -4 identified by their rest-frame far-infrared colors using the Planck and Herschel space facilities. We detect near-infrared counterparts for all six submillimeter sources, allowing us to undertake strong-lensing analyses. One field in particular stands out for its prominent giant arcs, PLCK G165.7+67.0 (G165). After combining the color and morphological information, we identify 11 sets of image multiplicities in this one field. We construct a strong-lensing model constrained by this lensing evidence, which uncovers a bimodal spatial mass distribution, and from which we measure a mass of (2.6±0.11) × 10 14 M within ∼250 kpc. The bright (S 350 ≈ 750 mJy) DSFG appears as two images: a giant arc with a spatial extent of 4. 5 that is merging with the critical curve, and a lower-magnification counterimage that is detected in our new longer-wavelength groundand space-based imaging data. Using our ground-based spectroscopy, we calculate a dynamical mass of 1.3 +0.04 −0.70 × 10 15 M to the same fixed radius, although this value may be inflated relative to the true value if the velocity distribution is enhanced in the line-of-sight direction. We suggest that the bimodal mass taken in combination with the weak X-ray flux and low SZ decrement may be explained as a pre-merger for which the intracluster gas is diluted along the line of sight, while the integrated surface mass density is supercritical to strong-lensing effects.

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Section: Lbt Observationsmentioning

confidence: 99%

“…Thus, the LBT/LUCI+ARGOS K imaging data effectively extend the wavelength reach of HST, thereby opening up new discovery space that favors the redder galaxy populations. For additional details regarding the performance of the LBT/LUCI+ARGOS instrument, see Rabien et al (2019).…”

Section: Lbt Observationsmentioning

confidence: 99%

PLCK G165.7+67.0: Analysis of a Massive Lensing Cluster in a Hubble Space Telescope Census of Submillimeter Giant Arcs Selected Using Planck/Herschel

Frye

Pascale

Qin

et al. 2019

ApJ

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“…In sum, these images are deep, making them valuable for this study, and giving them leverage as veto bands for the planned high-redshift galaxy searches using JWST Webb Medium Deep Fields (WMDFs;program #1176). The LBT Advanced Rayleigh Ground layer adaptive Optics System (ARGOS; Rabien et al (2019)) operates through the existing LUCI instrumentation. LUCI+ARGOS corrects the atmosphere for groundlayer distortions via multiple artificial stars which are projected by laser beams mounted on each of the two 8.4 m apertures.…”

Section: Large Binocular Telescopementioning

confidence: 99%

Possible Ongoing Merger Discovered by Photometry and Spectroscopy in the Field of the Galaxy Cluster PLCK G165.7+67.0

Pascale,

Frye,

Dai

et al. 2022

Preprint

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We present a detailed study of the Planck-selected binary galaxy cluster PLCK G165.7+67.0 (G165; z = 0.348). A multiband photometric catalog is generated that incorporates new imaging from the Large Binocular Telescope/Large Binocular Camera and Spitzer/IRAC to existing imaging. To cope with the different image characteristics, robust methods are applied in the extraction of the matchedaperture photometry. Photometric redshifts are estimated for 143 galaxies in the 4 arcmin 2 field of overlap covered by all these data. We confirm that strong lensing effects yield 30 images of 11 background galaxies, of which we contribute photometric redshift estimates for three image multiplicities. These constraints enable the construction of a revised lens model that confirms the bimodal structure, and from which we measure a mass of M 600kpc = (2.36 ± 0.23) × 10 14 M . In parallel, new spectroscopy using MMT/Binospec and archival data contributes thirteen galaxies which meet our velocity and transverse radius criteria for cluster membership. The two cluster components have a pair-wise velocity of < ∼ 100 km s −1 , favoring an orientation in the plane of the sky with a transverse velocity of 100-1700 km s −1 . At the same time, the brightest cluster galaxy is offset in velocity from the systemic mean value. New LOFAR and VLA radio maps uncover the BCG and a large red galaxy in the northeastern side to be head-tail galaxies, suggesting that this component has already traversed southwestern side and is now exiting the cluster to the northeast.

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“…This is a key feature at LBT, where LGS are available for GLAO correction only. 10 Further author information: send correspondence to Enrico Pinna: enrico.pinna@inaf.it The image report the SR value as color scale as function of guide star magnitude (x-axis) and seeing (y-axis). We highlighted in white the line of SR= 20% and 50% for R and K-band respectively.…”

Section: The Upgradementioning

confidence: 99%

Bringing SOUL on sky

Pinna,

Rossi,

Puglisi

et al. 2021

Preprint

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The SOUL project is upgrading the 4 SCAO systems of LBT, pushing the current guide star limits of about 2 magnitudes fainter thanks to Electron Multiplied CCD detector. This improvement will open the NGS SCAO correction to a wider number of scientific cases from high contrast imaging in the visible to extra-galactic source in the NIR. The SOUL systems are today the unique case where pyramid WFS, adaptive secondary and EMCCD are used together. This makes SOUL a pathfinder for most of the ELT SCAO systems like the one of GMT, MICADO and HARMONI of E-ELT, where the same key technologies will be employed. Today we have 3 SOUL systems installed on the telescope in commissioning phase. The 4th system will be installed in a few months. We will present here the results achieved during daytime testing and commissioning nights up to the present date.

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ARGOS at the LBT

Cited by 19 publications

References 68 publications

PLCK G165.7+67.0: Analysis of a Massive Lensing Cluster in a Hubble Space Telescope Census of Submillimeter Giant Arcs Selected Using Planck/Herschel

PLCK G165.7+67.0: Analysis of a Massive Lensing Cluster in a Hubble Space Telescope Census of Submillimeter Giant Arcs Selected Using Planck/Herschel

Possible Ongoing Merger Discovered by Photometry and Spectroscopy in the Field of the Galaxy Cluster PLCK G165.7+67.0

Bringing SOUL on sky

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