Results 111 to 120 of about 657,244 (303)

Electrostatic Dust Analyzer for Dust Transport Measurements on the Lunar Surface

open access: yesThe Planetary Science Journal
Lunar dust charging and transport is a more than five-decade-old problem. A high-fidelity and flight-qualified Electrostatic Dust Analyzer (EDA) has been developed to measure the charge, velocity, mass (size), and flux of electrostatically lofted dust ...
X. Wang   +14 more
doaj   +1 more source

Mitigating Complex Dust Foregrounds in Future Cosmic Microwave Background Polarization Experiments [PDF]

open access: yes, 2017
Polarized Galactic foregrounds are one of the primary sources of systematic error in measurements of the B-mode polarization of the cosmic microwave background (CMB).
B. Hensley, P. Bull
semanticscholar   +1 more source

Travelling the Two‐Way Street: Disrupting Colonial History

open access: yesNew Directions for Teaching and Learning, EarlyView.
ABSTRACT Using examples from the historical narratives about Kainai (Blackfoot Confederacy) painter Gerald Tailfeathers, this chapter challenges colonial narratives in Canadian history and historiography. Inspired by the author's participation in a Disrupting interview, the chapter explores both the author's personal history with colonial histories and
Kirk Niergarth
wiley   +1 more source

Origin of Dust around V1309 Sco [PDF]

open access: yes, 2013
The origin of dust grains in the interstellar medium is still open problem. \cite{Nicholls2013} found the presence of a significant amount of dust around V1309 Sco which maybe originate from the merger of a contact binary. We investigate the origin of dust around V1309 Sco, and suggest that these dust grains are efficiently produced in the binary ...
arxiv   +1 more source

AN APPARENT REDSHIFT DEPENDENCE OF QUASAR CONTINUUM: IMPLICATION FOR COSMIC DUST EXTINCTION? [PDF]

open access: yes, 2015
We investigate the luminosity and redshift dependence of the quasar continuum by means of the composite spectrum using a large non-BAL radio-quiet quasar sample drawn from the Sloan Digital Sky Survey.
Xiaoyi Xie, S. Shen, Z. Shao, J. Yin
semanticscholar   +1 more source

Vision at high latitudes: High sensitivity without specific boreal adaptations in photoreception in reindeer (Rangifer tarandus L.)

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The light climate at high latitudes, in particular the extended twilight of winter and the reduced diel variation in light level in midsummer and midwinter, potentially constrains visual function and the synchronisation of temporal organisation in polar species. In this
Nicholas J. C. Tyler   +3 more
wiley   +1 more source

Tracing the History of Obscured Star Formation with the SIMBA Cosmological Galaxy Evolution Simulation

open access: yesThe Astrophysical Journal
We explore the cosmic evolution of the fraction of dust-obscured star formation predicted by the simba cosmological hydrodynamic simulations featuring an on-the-fly model for dust formation, evolution, and destruction.
Dhruv T. Zimmerman   +3 more
doaj   +1 more source

More than 30 000 volunteers involved in identification of tiny rare interstellar dust particle candidates collected by the Stardust mission

open access: yesHeidelberger Jahrbücher Online, 2017
The NASA Stardust mission returned the first tiny samples of interstellar dust from beyond the borders of our solar system. This region is almost devoid of matter and the interstellar dust particles floating through our solar system are extremely rare ...
Andrew J. Westphal, Mario Trieloff
doaj   +1 more source

Dust Formation in Very Massive Primordial Supernovae

open access: yes, 2003
At redshift z>5 Type II supernovae (SNII) are the only known dust sources with evolutionary timescales shorter than the Hubble time. We extend the model of dust formation in the ejecta of SNII by Todini & Ferrara (2001) to investigate the same process in
A. Ferrara   +62 more
core   +2 more sources

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