Results 1 to 10 of about 2,867,884 (276)

Near-Infrared Observing Conditions at the BOAO and the SOAO [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2004
Korea Astronomy Observatory(KAO) has been developing the KAONICS, KAO Near-Infrared Camera System, which will be used for near-infrared observations in the ground-based telescopes of Korea.
Bongkon Moon   +6 more
doaj   +2 more sources

Light people: Professor Mengkun Liu [PDF]

open access: yesLight: Science & Applications
Editorial At the frontier where light meets quantum matter, Professor Mengkun Liu has built a distinctive research program that integrates advanced optical nanoscopy, quantum materials, and emergent light–matter interactions.
Wenjun Zheng, Siqiu Guo
doaj   +2 more sources

Multi-wavelength study of Galactic star-forming regions with near-infrared instruments on 2 - 4 meter class Indian telescopes [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2020
We present a brief description of the activities of the infrared astronomy group of Tata Institute of Fundamental Research with special emphasis on the near-infrared instrumentation for star formation studies using 2 - 4-meter class Indian ground-based ...
DEVENDRA K. OJHA
doaj   +1 more source

Precipitable Water Vapor Conditions for Infrared Observations at Korean Astronomical Observatories [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2007
KASINICS (Korea Astronomy and Space Science Institute Near Infrared Camera System) is equipped with a InSb array which can observe 1--5~μm bands in near-infrared.
Sungho Lee   +10 more
doaj   +1 more source

Mapping the Decline with Redshift of Dusty Star-forming Galaxies Using JWST and SCUBA-2

open access: yesThe Astrophysical Journal, 2023
We use JWST NIRCam observations of the massive lensing cluster field A2744 to develop a red galaxy selection of f _F444W > 1 μ Jy and f _F444W / f _F150W > 3.5 that picks out all nine >4.5 σ Atacama Large Millimeter/submillimeter Array 1.1 or 1.2 mm ...
A. J. Barger, L. L. Cowie
doaj   +1 more source

CEERS Epoch 1 NIRCam Imaging: Reduction Methods and Simulations Enabling Early JWST Science Results

open access: yesThe Astrophysical Journal Letters, 2023
We present the data release and data reduction process for the Epoch 1 NIRCam observations for the Cosmic Evolution Early Release Science Survey (CEERS). These data consist of NIRCam imaging in six broadband filters (F115W, F150W, F200W, F277W, F356W and
Micaela B. Bagley   +39 more
doaj   +1 more source

High-angular-resolution Imaging of the V892 Tau Binary System: A New Circumprimary Disk Detection and Updated Orbital Constraints

open access: yesThe Astrophysical Journal, 2023
We present a direct imaging study of V892 Tau, a young Herbig Ae/Be star with a close-in stellar companion and circumbinary disk. Our observations consist of images acquired via Keck II/NIRC2 with nonredundant masking and the pyramid wavefront sensor at $
Christina L. Vides   +4 more
doaj   +1 more source

Fractal Aggregates of Submicron-sized Grains in the Young Planet-forming Disk around IM Lup

open access: yesThe Astrophysical Journal Letters, 2023
Despite rapidly growing disk observations, it remains a mystery what primordial dust aggregates look like and what the physical and chemical properties of their constituent grains (monomers) are in young planet-forming disks. Confrontation of models with
Ryo Tazaki   +2 more
doaj   +1 more source

Detection of Carbon Monoxide’s 4.6 Micron Fundamental Band Structure in WASP-39b’s Atmosphere with JWST NIRSpec G395H

open access: yesThe Astrophysical Journal Letters, 2023
Carbon monoxide (CO) is predicted to be the dominant carbon-bearing molecule in giant planet atmospheres and, along with water, is important for discerning the oxygen and therefore carbon-to-oxygen ratio of these planets.
David Grant   +31 more
doaj   +1 more source

Coma Abundances of Volatiles at Small Heliocentric Distances: Compositional Measurements of Long-period Comet C/2020 S3 (Erasmus)

open access: yesThe Astronomical Journal, 2023
We report production rates of H _2 O and nine trace molecules (C _2 H _6 , CH _4 , H _2 CO, CH _3 OH, HCN, NH _3 , C _2 H _2 , OCS, and CO) in long-period comet C/2020 S3 (Erasmus) using the high-resolution, cross-dispersed infrared spectrograph (iSHELL)
Chemeda Ejeta   +11 more
doaj   +1 more source

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