Results 11 to 20 of about 91,007 (306)
Excess noise in InAs/GaSb type-II superlattice pin-photodiodes [PDF]
, 2022 S.5-8We characterize the low-frequency white noise behavior of a large set of InAs/GaSb superlattice infrared pin-photodiodes for the mid-wavelength infrared regime at 3-5 µm. For diodes with an increased dark current in comparison to the dark current of
Rehm, Robert +2 more
core +1 more source
The Astrophysical Journal, 2023 Photodissociation regions (PDRs) illuminated by high temperature ( T > 10 ^4 K) radiation fields display characteristic optical to midinfrared spectral features: emission bands that cluster around the blue limits of hydrogen series, an extended red ...
Frédéric Zagury
doaj +1 more source
On the infrared excess of Alpha Lyrae [PDF]
Symposium - International Astronomical Union, 1987 SummaryRecent measurements in far-infrared (12–200 μm) by IRAS (Aumann et al, 1984) and KAO (Harper et al, 1984) have shown evidence of infrared excess in the AO star Alpha Lyrae. This excess in the infrared radiation was interpreted as due to circumstellar dust constituted by grains much larger (≳10 μm) than those of interstellar origin.
B. G. Anandarao, D. B. Vaidya
openaire +1 more source
The Astrophysical Journal, 2023 In order to investigate the far-infrared excess detected from the western hot spot of the radio galaxy Pictor A with the Herschel observatory, submillimeter photometry is performed with the Atacama Compact Array (ACA) of the Atacama Large Millimeter ...
Naoki Isobe +6 more
doaj +1 more source
Infrared Excess in the Be Star δ Scorpii [PDF]
Publications of the Astronomical Society of the Pacific, 2008 We present infrared photometric observations of the Be binary system delta Scorpii obtained in 2006. The J,H and K magnitudes are the same within the errors compared to observations taken 10 months earlier. We derive the infrared excess from the observation and compare this to the color excess predicted by a radiative equilibrium model of the primary ...
Halonen, R. J. +8 more
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A YOUNG WHITE DWARF WITH AN INFRARED EXCESS [PDF]
The Astrophysical Journal, 2015 ApJ Letters ...
S. Xu (许偲艺) +6 more
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Evidence for the Disruption of a Planetary System During the Formation of the Helix Nebula
The Astronomical Journal, 2022 The persistence of planetary systems after their host stars evolve into their post-main-sequence phase is poorly constrained by observations. Many young white dwarf systems exhibit infrared excess emission and/or spectral absorption lines associated with
Jonathan P. Marshall +7 more
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InAs/GaSb superlattice infrared detectors [PDF]
, 2022 S.87-92We report on the development of high-performance InAs/GaSb superlattice (SL) infrared (IR) detectors for the mid-wave-length (MWIR, 3-5 µm) and long-wavelength (LWIR, 8-12 µm) transmission window of the atmosphere.
Rehm, Robert +7 more
core +1 more source
Dust distribution in L1217/L1219: Nice vs. Nicer [PDF]
Serbian Astronomical Journal, 2004 The dust in molecular clouds reliably traces the molecular gas within. We used this assumption to get an estimate of the dense cores size and mass in L1217/L1219 by deriving the total optical extinction, and therefore, the total column density.
Nikolić S., Kun M.
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VARIABILITY OF THE INFRARED EXCESS OF EXTREME DEBRIS DISKS [PDF]
The Astrophysical Journal, 2012 Debris disks with extremely large infrared excesses (fractional luminosities $> 10^{-2}$) are rare. Those with ages between 30 and 130 Myr are of interest because their evolution has progressed well beyond that of protoplanetary disks (which dissipate with a timescale of order 3 Myr), yet they represent a period when dynamical models suggest that ...
Meng, Huan Y. A. +5 more
openaire +3 more sources