Results 11 to 20 of about 4,545 (163)

Superconducting tunnel junctions as detectors for ultraviolet, optical, and near infrared astronomy [PDF]

Astronomy and Astrophysics Supplement Series, 1997
We discuss the capabilities of superconduct- ing tunnel junctions as detectors for ultraviolet, optical, and near-infrared astronomy. Such junctions have recently been shown to allow the detection of individual optical and ultraviolet photons with an inherent spectral resolu- tion related to the critical temperature of the absorbing superconductor ...
T. Peacock, P. Verhoeve, N. Rando, M. A.C. Perryman, B. G. Taylor, P. Jakobsen   +5 more
openaire   +1 more source

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

The 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, Joshua D. Lothringer, Hannah R. Wakeford, Munazza K. Alam, Lili Alderson, Jacob L. Bean, Björn Benneke, Jean-Michel Désert, Tansu Daylan, Laura Flagg, Renyu Hu, Julie Inglis, James Kirk, Laura Kreidberg, Mercedes López-Morales, Luigi Mancini, Thomas Mikal-Evans, Karan Molaverdikhani, Enric Palle, Benjamin V. Rackham, Seth Redfield, Kevin B. Stevenson, Jeff A. Valenti, Nicole L. Wallack, Keshav Aggarwal, Eva-Maria Ahrer, Ian J. M. Crossfield, Nicolas Crouzet, Nicolas Iro, Nikolay K. Nikolov, Peter J. Wheatley, JWST Transiting Exoplanet Community ERS team   +31 more
doaj   +1 more source

Wide-field dynamic astronomy in the near-infrared with Palomar Gattini-IR and DREAMS [PDF]

Advances in Optical Astronomical Instrumentation 2019, 2020
There have been a dramatic increase in the number of optical and radio transient surveys due to astronomical transients such as gravitational waves and gamma ray bursts, however, there have been a limited number of wide-field infrared surveys due to narrow field-of-view and high cost of infrared cameras, we present two new wide-field near-infrared ...
Soon, Jamie, Adams, David, De, Kishalay, Galla, Antony, Hankins, Matthew, Kasliwal, Mansi M., Moore, Anna M., Adams, Scott M., Antoszewski, Jarek, Ashley, Michael C., Babul, Aliya-Nur, Bland-Hawthorn, Joss, Cooke, Jeff, De Marco, Orsola, Delacroix, Alexandre, Devillepoix, Hadrien, Ellis, Simon C., Freeman, Ken C., Hale, David, Heger, Alexander, Jencson, Jacob E., Lau, Ryan M., McKenna, Daniel, Ofek, Eran, Ryder, Stuart, Simcoe, Robert, Sokoloski, Jennifer L., Soria, Roberto, Smith, Roger M., Travouillon, Tony D.   +29 more
openaire   +2 more sources

Integration of an Optical Setup for the Characterization of Near-Infrared Detectors Used in Ground and Space-Based Astronomy [PDF]

The 8th International Symposium on Sensor Science, 2021
To make Europe competitive in the field of astronomical sensors and detectors, the main goal of this research is to provide the capability to manufacture high performance infrared focal plane arrays (FPA) devoted to scientific and astronomical ground and space telescope missions. This paper presents the main outcome of an international project with the
Jorge Jimenez, Antoni Grau
openaire   +1 more source

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

The 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, Erika Gibb, Nathan Roth, Michael A. DiSanti, Neil Dello Russo, Mohammad Saki, Adam J. McKay, Hideyo Kawakita, Younas Khan, Boncho P. Bonev, Ronald J. Vervack Jr., Michael R. Combi   +11 more
doaj   +1 more source

Integration of a Testbench for the Optical and Thermal Characterization of Near-Infrared Detectors Used in Ground and Space-Based Astronomy [PDF]

IEEE Transactions on Instrumentation and Measurement, 2021
The mercury–cadmium–tellurium (MCT) sensors are considered the ideal infrared detectors to equip the focal plane arrays (FPAs) of astronomical scientific missions. To tackle Europe to be self-sufficient on this technology and promote to reach the same maturity level attained by the current MCT sensors market leaders, the Astronomy European Infrared ...
Jorge Jimenez, Antoni Grau, Cristobal Padilla   +2 more
openaire   +3 more sources

Toward Measuring the Microlensing Event Rate in the Galactic Center. I. Event Detection from the UKIRT Microlensing Survey Data

The Astrophysical Journal Supplement Series, 2023
To overcome the high optical extinction, near-infrared (NIR) observations are needed for probing the microlensing events toward the Galactic center. The 2015–2019 UKIRT microlensing survey toward the Galactic center is the first dedicated precursor NIR ...
Yongxin Wen, Weicheng Zang, Bo Ma
doaj   +1 more source

Recent developments in superconducting tunnel junctions for ultraviolet, optical & near infrared astronomy [PDF]

Astronomy and Astrophysics Supplement Series, 1998
Some recent results associated with the development of tantalum based photon counting superconducting tunnel junctions (STJ) suitable for use as broad-band low resolution spectrometers for optical and ultraviolet astronomy are presented. A m square tantalum based STJ, operated at a temperature of 0.3 K, has demonstrated a limiting resolution of  nm at ...
T. Peacock, P. Verhoeve, N. Rando, C. Erd, M. Bavdaz, B. G. Taylor, D. Perez   +6 more
openaire   +1 more source

Far-ultraviolet to Near-infrared Observations of SN 2023ixf: A High-energy Explosion Engulfed in Complex Circumstellar Material

The Astrophysical Journal Letters, 2023
We present early-phase panchromatic photometric and spectroscopic coverage spanning the far-ultraviolet to near-infrared regime of the nearest hydrogen-rich core-collapse supernova (SN) in the last 25 yr, SN 2023ixf.
Rishabh Singh Teja, Avinash Singh, Judhajeet Basu, G. C. Anupama, D. K. Sahu, Anirban Dutta, Vishwajeet Swain, Tatsuya Nakaoka, Utkarsh Pathak, Varun Bhalerao, Sudhanshu Barway, Harsh Kumar, Nayana A. J., Ryo Imazawa, Brajesh Kumar, Koji S. Kawabata   +15 more
doaj   +1 more source

The micro-mirror technology applied to astronomy: ANIS adaptive-slit near Infrared spectrograph [PDF]

International Conference on Space Optics — ICSO 1997, 2018
This paper, “The micro-mirror technology applied to astronomy: ANIS adaptive-slit near Infrared spectrograph," was presented as part of International Conference on Space Optics—ICSO 1997, held in Toulouse, France.
Robert Grange, Pierre Bely, Véronique Buat, Denis Burgarella   +3 more
openaire   +1 more source