Results 81 to 90 of about 4,597 (205)

MoonShine: A software‐hardware system for simulating moonlight ground illuminance and re‐creating artificial moonlight cycles in a laboratory environment

Methods in Ecology and Evolution, Volume 15, Issue 4, Page 701-715, April 2024.
Abstract Moonlight exerts profound ecological, behavioural and physiological effects on animals. However, lunar cycles are characterised by complex changes in the illuminance and timing of illumination, making it challenging to re‐create and manipulate moonlight cycles in the laboratory using artificial lights.
Lok Poon, Ian T. Jenks, W. G. R. Crampton   +2 more
wiley   +1 more source

Worlds Next Door: A Candidate Giant Planet Imaged in the Habitable Zone of α Centauri A. I. Observations, Orbital and Physical Properties, and Exozodi Upper Limits

The Astrophysical Journal Letters
We report on coronagraphic observations of the nearest solar-type star, α Centauri A ( α Cen A), using the MIRI instrument on the James Webb Space Telescope.
Charles Beichman, Aniket Sanghi, Dimitri Mawet, Pierre Kervella, Kevin Wagner, Billy Quarles, Jack J. Lissauer, Max Sommer, Mark Wyatt, Nicolas Godoy, William O. Balmer, Laurent Pueyo, Jorge Llop-Sayson, Jonathan Aguilar, Rachel Akeson, Ruslan Belikov, Anthony Boccaletti, Elodie Choquet, Edward Fomalont, Thomas Henning, Dean Hines, Renyu Hu, Pierre-Olivier Lagage, Jarron Leisenring, James Mang, Michael Ressler, Eugene Serabyn, Pascal Tremblin, Marie Ygouf, Mantas Zilinskas   +29 more
doaj   +1 more source

Cosmic Infrared Background Fluctuations and Zodiacal Light

, 2016
We have performed a specific observational test to measure the effect that the zodiacal light can have on measurements of the spatial fluctuations of the near-IR background.
Arendt, Richard G., Kashlinsky, A., Mather, J., Moseley, S. H.   +3 more
core   +1 more source

No evidence for an early seventeenth-century Indian sighting of Keplers supernova (SN1604) [PDF]

, 2012
In a recent paper Sule et al. (Astronomical Notes, vol. 332 (2011), 655) argued that an early 17th-century Indian mural of the constellation Sagittarius with a dragon-headed tail indicated that the bright supernova of 1604 was also sighted by Indian ...
van Gent, Robert H.
core   +1 more source

SKYSURF. VI. The Impact of Thermal Variations of HST on Background Light Estimates

The Astronomical Journal
The SKYSURF project constrained extragalactic background light and diffuse light (DL) with the vast archive of Hubble Space Telescope (HST) images.
Isabel A. McIntyre, Timothy Carleton, Rosalia O’Brien, Rogier A. Windhorst, Sarah Caddy, Seth H. Cohen, Rolf A. Jansen, John MacKenty, Scott J. Kenyon   +8 more
doaj   +1 more source

History of the dust released by comets [PDF]

The Finson-Brobstein theory is used to examine production and history of dust released from periodic comets and to compare dust size distribution in relation to the Zodiacal cloud.
Jambor, B. J.
core   +1 more source

New Measurements of the Motion of the Zodiacal Dust

, 2004
Using the Wisconsin H-Alpha Mapper (WHAM), we have measured at high spectral resolution and high signal-to-noise the profile of the scattered solar Mg I 5184 absorption line in the zodiacal light.
Clarke D., East I. R., Fried J. W., G. J. Madsen, Haug U., Hicks T. R., Hong S. S., Huestis D. L., Ingham M. F., James J. F., James J. F., Mann I., Mattila K., Mukai T., R. J. Reynolds, Rodriguez G. L., S. H. Moseley, Sioris C. E.   +17 more
core   +2 more sources

The NGST and the zodiacal light in the Solar system

, 1999
We develop a physical model of the zodiacal cloud incorporating the real dust sources of asteroidal, cometary, and kuiperoidal origin. Using the inferred distribution of the zodiacal dust, we compute its thermal emission and scattering at several ...
Gorkavyi, Nick, Mather, John, Ozernoy, Leonid, Taidakova, Tanya   +3 more
core  

Worlds Next Door: A Candidate Giant Planet Imaged in the Habitable Zone of α Centauri A. II. Binary Star Modeling, Planet and Exozodi Search, and Sensitivity Analysis

The Astrophysical Journal Letters
The James Webb Space Telescope (JWST) observed our closest solar twin, α Centauri A ( α Cen A), with the Mid-Infrared Instrument in the F1550C (15.5 μ m) coronagraphic imaging mode at three distinct epochs between 2024 August and 2025 April.
Aniket Sanghi, Charles Beichman, Dimitri Mawet, William O. Balmer, Nicolas Godoy, Laurent Pueyo, Anthony Boccaletti, Max Sommer, Alexis Bidot, Elodie Choquet, Pierre Kervella, Pierre-Olivier Lagage, Jarron Leisenring, Jorge Llop-Sayson, Michael Ressler, Kevin Wagner, Mark Wyatt   +16 more
doaj   +1 more source

Palaeolithic extinctions and the Taurid Complex

, 2010
Intersection with the debris of a large (50-100 km) short-period comet during the Upper Palaeolithic provides a satisfactory explanation for the catastrophe of celestial origin which has been postulated to have occurred around 12900 BP, and which ...
Asher, Asher, Babadzhanov, Babadzhanov, Babadzhanov, Babadzhanov, Beech, Boroviçka, Brown, Campbell-Brown, Chyba, Clarke, Clube, Denning, Desvoivres, Di Sisto, Dubietis, Faith, Firestone, Firestone, Franzén, Gill, Gladman, Grady, Harris, Haynes, Hughes, Ishiguro, Jenniskens, Jenniskens, Jenniskens, Kasuga, Kennett, Kresák, Kresák, Levasseur-Regourd, Luu, Mahaney, McBride, Morbidelli, Napier, Napier, Porubc̆an, Porubc̆an, Reach, Sekanina, Steel, Steel, Stuart, Terentjeva, Toon, Trigo-Rodrigues, W. M. Napier, Whipple, Wiegert, Zook, Öpik, Štohl   +57 more
core   +1 more source