Advanced Technology Large-Aperture Space Telescope (ATLAST): A Technology Roadmap for the Next Decade

Postman, Marc; Argabright, Vic S.; Arnold, William A.; Aronstein, David L.; Atcheson, Paul D.; Blouke, Morley M.; Brown, Tom; Calzetti, Daniela; Cash, Webster; Clampin, Mark; Content, Dave; Dailey, Dean; Danner, Rolf; Doxsey, R.; Ebbets, Dennis; Eisenhardt, Peter; Feinberg, Lee; Fruchter, A. S.; Giavalisco, Mauro; Glassman, Tiffany; Gong, Qihuang; Green, James; Grunsfeld, J. M.; Gull, T. R.; Hickey, Greg; Hopkins, Randall C.; Hraba, John; Hyde, Tupper; Jordan, Ian; Kasdin, Jeremy; Kendrick, Steve; Kilston, Steve; Koekemoer, Anton M.; Korechoff, Bob; Krist, John; Mather, John C.; Lillie, Chuck; Lo, Amy Cheuk Yin; Lyon, Rick; McCullough, Peter A.; Mosier, Gary E.; Mountain, Matt; Oegerle, Bill; Pasquale, Bert A.; Purves, Lloyd; Penera, Cecelia; Polidan, R.; Redding, David W.; Sahu, Kailash C.; Saif, Babak; Sembach, K. R.; Shull, M.; Smith, Scott M.; Sonneborn, G.; Spergel, David N.; Stahl, Phil; Stapelfeldt, K.; Thronson, H. A.; Thronton, Gary; Townsend, J.; Traub, Wesley A.; Unwin, S. C.; Valenti, Jeff A.; Vanderbei, Robert J.; Werner, M. W.; Wesenberg, Richard L.; Wiseman, Jennifer; Woodgate, B. E.

doi:10.48550/arxiv.0904.0941

Cited by 5 publications

(6 citation statements)

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“…Larger objects, comparable in size to MD5b, would require imaging ∼ 20 times deeper. In practice, the best way to measure the average F UV /F LyC ratio for the faintest galaxies may be with stacked LyC observations, or with the next-generation UV space telescope (e.g., ATLAST; Postman et al, 2009). Finally, if the morphology of the candidates for LyC emission are complex, the last step would be to obtain high-resolution spectroscopic follow-up of the LyC-emitting component of the galaxy.…”

Section: The Future Of Lyc Surveysmentioning

confidence: 99%

A HIGH-RESOLUTIONHUBBLE SPACE TELESCOPESTUDY OF APPARENT LYMAN CONTINUUM LEAKERS ATz∼ 3

Mostardi

Shapley

Steidel

et al. 2015

ApJ

111

158

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We present U 336 V 606 J 125 H 160 follow-up Hubble Space Telescope (HST) observations of 16 z ∼ 3 candidate Lyman continuum (LyC) emitters in the HS1549+1919 field. With these data, we obtain high spatial-resolution photometric redshifts of all sub-arcsecond components of the LyC candidates in order to eliminate foreground contamination and identify robust candidates for leaking LyC emission. Of the 16 candidates, we find one object with a robust LyC detection that is not due to foreground contamination. This object (MD5) resolves into two components; we refer to the LyC-emitting component as MD5b. MD5b has an observed 1500 Å to 900 Å fluxdensity ratio of F F 4.0 2.0 UV LyC obs ( ) =  , compatible with predictions from stellar population synthesis models. Assuming minimal IGM absorption, this ratio corresponds to a relative (absolute) escape fraction of f esc,rel MD5b = 75%-100% ( f esc,abs MD5b = 14%-19%). The stellar population fit to MD5b indicates an age of 50 Myr, which is in the youngest 10% of the HST sample and the youngest third of typical z ∼ 3 Lyman break galaxies, and may be a contributing factor to its LyC detection. We obtain a revised, contamination-free estimate for the comoving specific ionizing emissivity at z = 2.85, indicating (with large uncertainties) that star-forming galaxies provide roughly the same contribution as QSOs to the ionizing background at this redshift. Our results show that foreground contamination prevents ground-based LyC studies from obtaining a full understanding of LyC emission from z ∼ 3 star-forming galaxies. Future progress in direct LyC searches is contingent upon the elimination of foreground contaminants through high spatial-resolution observations, and upon acquisition of sufficiently deep LyC imaging to probe ionizing radiation in high-redshift galaxies.

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Section: The Future Of Lyc Surveysmentioning

confidence: 99%

A HIGH-RESOLUTIONHUBBLE SPACE TELESCOPESTUDY OF APPARENT LYMAN CONTINUUM LEAKERS ATz∼ 3

Mostardi

Shapley

Steidel

et al. 2015

ApJ

111

158

View full text Add to dashboard Cite

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“…Unless designs change, this facility is unlikely to enable discovery of faint satellites in the Pluto-Charon system. LUVOIR (ATLAST) is a 8-16-m ultraviolet-optical-infrared telescope concept with a variety of proposed instruments (e.g., Postman et al 2009;Feinberg et al 2014;Thronson et al 2016;Bolcar et al 2017;Arney et al 2017). Scaling from quoted sensitivity estimates for instruments on the 6.5-m JWST, IR imagers on LUVOIR could detect small satellites beyond the orbit of Hydra with radii r ≈ 0.5-1 km.…”

Section: Future Optionsmentioning

confidence: 99%

A Pluto–Charon Sonata: The Dynamical Architecture of the Circumbinary Satellite System

Kenyon

Bromley

2019

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Using a large suite of n-body simulations, we explore the discovery space for new satellites in the Pluto-Charon system. For the adopted masses and orbits of the known satellites, there are few stable prograde or polar orbits with semimajor axes a 1.1 a H , where a H is the semimajor axis of the outermost moon Hydra. Small moons with radii r 2 km and a 1.1 a H are ejected on time scales ranging from several yr to more than 10 Myr. Orbits with a 1.1 a H are stable on time scales exceeding 100 Myr. Near-IR and mid-IR imaging with JWST and ground-based occultation campaigns with 2-3-m class telescopes can detect 1-2 km satellites outside the orbit of Hydra. Searches for these moons enable new constraints on the masses of the known satellites and on theories for circumbinary satellite formation.Subject headings: planets and satellites: dynamical evolution and stabilityplanets and satellites: individual (Pluto)

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“…The 2010 Astronomy and Astrophysics Decadal Survey (New Worlds, New Horizons) recommended an augmentation of the NASA technology development budget for hardware supporting both a mission capable of direct spectroscopy of Earth-like planets and a large UV astrophysics mission to serve as a successor to HST 1 . These recommendations built on several exercises for Probe-class (cost ~$1B) missions during the 2000s and numerous white papers making the science case for an Advanced Technology Large Aperture Space Telescope (ATLAST) mission submitted to the 2010 decadal survey for consideration 2 .…”

Section: Luvoir Surveyormentioning

confidence: 99%

CHISL: the combined high-resolution and imaging spectrograph for the LUVOIR surveyor

Fleming

Hoadley

2016

SPIE Proceedings

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NASA is currently carrying out science and technical studies to identify its next astronomy flagship mission, slated to begin development in the 2020s. It has become clear that a Large Ultraviolet/Optical/IR (LUVOIR) Surveyor mission (dprimary ≈ 12 m, Δλ ≈ 1000 Å -2 µm spectroscopic bandpass) can carry out the largest number of NASA's exoplanet and astrophysics science goals over the coming decades. The science grasp of a LUVOIR Surveyor is broad, ranging from the direct detection of potential biomarkers on rocky planets to the flow of matter into and out of galaxies and the history of star-formation across cosmic time. There are technical challenges for several aspects of the LUVOIR Surveyor concept, including component level technology readiness maturation and science instrument concepts for a broadly capable ultraviolet spectrograph. We present the scientific motivation for, and a preliminary design of, a multiplexed ultraviolet spectrograph to support both the exoplanet and astrophysics goals of the LUVOIR Surveyor mission concept, the Combined High-resolution and Imaging Spectrograph for the LUVOIR Surveyor (CHISL). CHISL includes a highresolution (R ≈ 120,000; 1000 -1700Å) point-source spectroscopy channel and a medium resolution (R ≥ 14,000 from 1000 -2000 Å in a single observation and R ~ 24,000 -35,000 in multiple grating settings) imaging spectroscopy channel. CHISL addresses topics ranging from characterizing the composition and structure of planet-forming disks to the feedback of matter between galaxies and the intergalactic medium. We present the CHISL concept, a small sample of representative science cases, and the primary technological hurdles. Technical challenges include high-efficiency ultraviolet coatings and high-quantum efficiency, large-format, photon counting detectors. We are actively engaged in laboratory and flight characterization efforts for all of these enabling technologies as components on sounding rocket payloads under development at the University of Colorado. We describe two payloads that are designed to be pathfinder instruments for the high-resolution (CHESS) and imaging spectroscopy (SISTINE) arms of CHISL. We are carrying out this instrument design, characterization, and flight-testing today to support the new start of a LUVOIR Surveyor mission in the next decade.Keywords: flagship mission: LUVOIR, ultraviolet spectroscopy, suborbital payloads, science drivers, photon-counting detectors, optical coatings LUVOIR SURVEYORThe 2010 Astronomy and Astrophysics Decadal Survey (New Worlds, New Horizons) recommended an augmentation of the NASA technology development budget for hardware supporting both a mission capable of direct spectroscopy of Earth-like planets and a large UV astrophysics mission to serve as a successor to HST 1 . These recommendations built on several exercises for Probe-class (cost ~$1B) missions during the 2000s and numerous white papers making the science case for an Advanced Technology Large Aperture Space Telescope (ATLAST) mission submitted to the 20...

show abstract

Advanced Technology Large-Aperture Space Telescope (ATLAST): A Technology Roadmap for the Next Decade

Cited by 5 publications

References 0 publications

A HIGH-RESOLUTIONHUBBLE SPACE TELESCOPESTUDY OF APPARENT LYMAN CONTINUUM LEAKERS ATz∼ 3

A HIGH-RESOLUTIONHUBBLE SPACE TELESCOPESTUDY OF APPARENT LYMAN CONTINUUM LEAKERS ATz∼ 3

A Pluto–Charon Sonata: The Dynamical Architecture of the Circumbinary Satellite System

CHISL: the combined high-resolution and imaging spectrograph for the LUVOIR surveyor

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