Results 31 to 40 of about 67,060 (301)

Simultaneous Estimates of Star-cluster Age, Metallicity, Mass, and Extinction (SESAMME). I. Presenting an MCMC Approach to Spectral Stellar Population Fitting

The Astrophysical Journal, 2023
We present the first version release of SESAMME, a public, Python-based full spectrum fitting tool for Simultaneous Estimates of Star-cluster Age, Metallicity, Mass, and Extinction.
Logan H. Jones, Svea Hernandez, Linda J. Smith, Bethan L. James, Alessandra Aloisi, Søren Larsen   +5 more
doaj   +1 more source

The Challenge to Large Optical Telescopes from X-ray Astronomy [PDF]

, 2002
In the ROSAT era of the mid-1990's, the problems facing deep X-ray surveys could be largely solved with 10 m class telescopes. In the first decade of this new millennium, with X-ray telescopes such as the Chandra X-ray Observatory and XMM-Newton in ...
Hornschemeier, Ann E.
core   +3 more sources

UV and EUV Instruments

, 2010
We describe telescopes and instruments that were developed and used for astronomical research in the ultraviolet (UV) and extreme ultraviolet (EUV) regions of the electromagnetic spectrum.
A. Boggess, A. Boksenberg, A. Gregorio, A. Vuillemin, A.A. Boyarchuk, A.A. Boyarchuk, A.F. Davidsen, A.L. Broadfoot, A.M. Smith, A.M. Zvereva, B. Valcu, B.G. Taylor, C. de Jager, C. Morales, C.B. Opal, C.S. Weller, D.C. Martin, D.J. Sahnow, E. Pfeffermann, E.B. Jenkins, E.G. Schmidt, E.J. Korpela, F. Paresce, F.G. Ocallaghan, G.A. Gurzadyan, G.A. Gurzadyan, G.G. Spear, G.M. Tovmasyan, G.R. Carruthers, G.R. Carruthers, G.R. Carruthers, G.R. Carruthers, G.R. Carruthers, H.W. Moos, H.W. Moos, J. Barnstedt, J. Edelstein, J. Murthy, J. Murthy, J.B. Pearce, J.B. Rogerson, J.D. Fix, J.J. Bloch, J.W. Kruk, K.G. Henize, K.H. Nordsieck, K.O. Mason, L. Strüder, L.H. Aller, M. Hurwitz, M. Hurwitz, M. Hurwitz, M. Hurwitz, M. Laget, M. Maucherat-Joubert, M.A. Barstow, M.C. Weisskopf, M.R. Molnar, N. Gehrels, N.A. Dimov, N.A. Dimov, N.A. Dimov, N.A. Dimov, N.E. White, P. Morissey, P.R. Wesselius, R. Giacconi, R. Stalio, R. Wilson, R.C. Bless, R.C. Henry, R.J. van Duinen, S. Bowyer, S. Bowyer, S. Bowyer, S. Bowyer, S. Bowyer, S. Bowyer, T.P. Stecher, V.G. Kurt, V.G. Kurt, W. Tobin, W.G. Fastie, Y. Kondo   +83 more
core   +1 more source

Geometry‐Dependent Adhesion in Transparent Monodomain Liquid Crystal Elastomers

Advanced Functional Materials, EarlyView.
Liquid Crystal Elastomers (LCEs) are emerging as exciting pressure‐sensitive adhesives. We examine adhesion in chemically identical elastomer films, exploring the influence of geometry (director orientation) and phase (nematic or isotropic). We demonstrate the potential of these aligned films as transparent, tunable, broad‐temperature‐range smart ...
Aidan Street, Devesh Mistry, Johan Mattsson, Helen F. Gleeson   +3 more
wiley   +1 more source

Extracting Cleaned Swift/UVOT Ultraviolet Grism Spectra with the uvotpy Package

The Astrophysical Journal Supplement Series
The Ultraviolet/Optical Telescope (UVOT) on board the Neil Gehrels Swift Observatory is capable of imaging with seven lenticular filters and of taking slitless spectra with two grisms.
Hao Zhou, Stefano Covino, Zhi-Ping Jin, Yi-Zhong Fan, Da-Ming Wei, N. Paul Kuin   +5 more
doaj   +1 more source

Infrared Nanocrystals for Space Application: Hardness to Irradiations

Advanced Functional Materials, EarlyView.
This article investigates infrared HgTe nanocrystals under X‐ray and ion irradiation, revealing remarkable radiation hardness. It uncovers distinct degradation mechanisms and shows that the nanomaterial outperforms integrated electronics. The results position colloidal nanocrystals as promising candidates for resilient space and harsh‐environment ...
Alexandre Neyret, Dario Mastrippolito, Bingbing Xia, Adrien Khalili, Maxime Lebreton, Giorgia Strobbia, Albin Colle, Marco Paye, Mariarosa Cavallo, Erwan Bossavit, Claire Abadie, Yoann Prado, Debora Pierucci, Victor Parahyba, Francois Coursaget, David Darson, Emrick Briand, Ian Vickridge, Stephane Demiguel, Sebastien Massenot, Jean‐Marc Belloir, Vincent Goiffon, Emmanuel Lhuillier   +22 more
wiley   +1 more source

Scientific Objectives for UV/Visible Astrophysics Investigations: A Summary of Responses by the Community (2012) [PDF]

, 2013
Following several recommendations presented by the Astrophysics Decadal Survey 2010 centered around the need to define "a future ultraviolet-optical space capability," on 2012 May 25, NASA issued a Request for Information (RFI) seeking persuasive ...
Benford, Dominic J., Neff, Susan G., Perez, Mario R., Scowen, Paul A.   +3 more
core   +5 more sources

Multipurpose Transparent Nanocomposites for Gamma Spectroscopy, Pulse Shape Discrimination, Thermal Neutron Detection, Radiation Shielding, and High Refractive Index Applications

Advanced Functional Materials, EarlyView.
Materials exist that are useful for gamma scintillation, radiation shielding, neutron‐gamma pulse shape discrimination (PSD), thermal neutron detection, or high refractive index applications. While certain materials have exhibited optimal performance for each of these applications, none achieve multiple functions.
Isabelle Winardi, Stephane Miaule, Robert Carmichael, Bowen Sun, Ziqing Han, Prabhav Surabhi, Zhen Luo, Noelan Hum, David Prout, Yi‐An Chen, Ting‐Hsuan Wu, Hao Yu, Arion Chatziioannou, Qibing Pei   +13 more
wiley   +1 more source

The AstroSat UV Deep Field South. V. Constraints on the Average Escape of Ionizing Photons in the Cosmic Dusk

The Astrophysical Journal
We investigate the escape of ionizing (Lyman-continuum (LyC)) photons from 49 star-forming galaxies at redshifts of ∼1–1.5, using far-UV imaging from the Ultra-Violet Imaging Telescope on board AstroSat. The sample spans a wide range of stellar masses ( $
Soumil Maulick, Kanak Saha
doaj   +1 more source

Imaging of single infrared, optical, and ultraviolet photons using distributed tunnel junction readout on superconducting absorbers [PDF]

, 2006
Single-photon imaging spectrometers of high quantum efficiency in the infrared to ultraviolet wavelength range, with good timing resolution and with a vanishing dark count rate are on top of the wish list in earth-bound astronomy, material and medical ...
Alex Zehnder, Eugenie Kirk, Jochum J., Miha Furlan   +3 more
core   +2 more sources