Results 11 to 20 of about 121,582 (238)

ISO continuum observations of quasars at z=1-4 I.Spectral energy distributions of quasars from the UV to far-infrared [PDF]

, 2000
Eight luminous quasars with $ -30 < M_B < -27$ at z = 1.4 - 3.7 have been observed in the mid- and far-infrared using ISO. All the quasars have been detected in the mid-infrared bands of ISOCAM, while no far-infrared detections have been made with ...
Andreani, Andreani, Bechtold, Benford, Bertin, Bloom, C. Gabriel, Carilli, Carilli, Casali, Cesarsky, Chini, Chini, Dunlop, E. Nishihara, Elvis, Green, Guilloteau, Guilloteau, H. Okuda, H. Shibai, Haas, Hamann, Herbstmeier, Hughes, Impey, Irwin, Isaak, Ivison, K. Kawara, Kawara, Kawara, Kessler, Kneib, Kobayashi, Kormann, Landolt, Lemke, Lichti, Magain, Matsuhara, McMahon, Neugebauer, Neugebauer, Ohta, Omont, Omont, Osmer, Pier, Puget, Richards, Rowan-Robinson, S. Oyabu, Sanders, Schneider, Starck, T. Hasegawa, Taniguchi, Y. Sato, Y. Sofue, Y. Taniguchi, Y. Tsuzuki, Yoshii   +62 more
core   +2 more sources

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

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

The 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, Christian Ginski, Carsten Dominik   +2 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

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

Optical and near-infrared observations of the GRB 970616 error box [PDF]

, 1999
We report on near-infrared and optical observations of the GRB 970616 error box and of the X-ray sources discovered by ASCA and ROSAT in the region. No optical transient was found either within the IPN band or in the X-ray error boxes, similarly to other
Castro-Tirado, A. J., Gorosabel, J., Greiner, J., Guerrero, M., Lund, N., Oscoz, A., Pedersen, H., Sabalisck, N., Thompson, D., Villaver, E.   +9 more
core   +2 more sources

NEWS: the near-infrared Echelle for wideband spectroscopy [PDF]

, 2016
We present an updated optical and mechanical design of NEWS: the Near-infrared Echelle for Wide-band Spectroscopy (formerly called HiJaK: the High-resolution J, H and K spectrometer), a compact, high-resolution, near-infrared spectrometer for 5-meter ...
Hall, Zachary, Muirhead, Philip, Taylor, Brian, Veyette, Mark, Ye, Jimmy   +4 more
core   +2 more sources

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