Results 71 to 80 of about 108,957 (118)

Spectroscopic Evolution in Ice Analogs of Trans-Neptunian Objects Exposed to Ionizing Radiation. I. Visible Reflectance Spectra and Colors

The Astrophysical Journal Supplement Series
Trans-Neptunian objects (TNOs) exhibit a color diversity containing a wealth of clues for understanding complex compositions and the formation history of our solar system.
Chaojiang Zhang, Jia Wang, Andrew M. Turner, Leslie A. Young, Ralf I. Kaiser   +4 more
doaj   +1 more source

The Progenitor Systems of Classical Novae in M31

The Astrophysical Journal
We present the first characterization of the statistical relationship between a large sample of novae in M31 and their progenitor stellar populations in the form of a delay time distribution.
C. S. Abelson, Carles Badenes, Laura Chomiuk, Benjamin F. Williams, Katelyn Breivik, L. Galbany, C. Jiménez-Palau   +6 more
doaj   +1 more source

Analyzing the Morphology of Late-phase Stellar Flares from G-, K-, and M-type Stars

The Astrophysical Journal
Stellar flares occasionally present a peak-bump light-curve morphology, consisting of an initial impulsive phase followed by a gradual late phase.
Denise G. Yudovich, Kai E. Yang, Xudong Sun   +2 more
doaj   +1 more source

Detection of Deuterated Hydrocarbon Nanoparticles in the Whirlpool Galaxy, M51

The Astrophysical Journal Letters
Deuteration of hydrocarbon material, including polycyclic aromatic hydrocarbons (PAHs), has been proposed to account for the low gas-phase abundances of D in the interstellar medium (ISM). JWST spectra of four star-forming regions in M51 show an emission
B. T. Draine, Karin Sandstrom, Daniel A. Dale, J.-D. T. Smith, Ryan Chown, Grant P. Donnelly, Sara E. Duval, Cory M. Whitcomb, Angela Adamo, L. Armus, Danielle A. Berg, Torsten Böker, Alberto D. Bolatto, Martha L. Boyer, Daniela Calzetti, B. G. Elmegreen, Brandt A. L. Gaches, Karl D. Gordon, L. K. Hunt, R. C. Kennicutt, Ralf S. Klessen, Thomas S.-Y. Lai, Adam K. Leroy, Sean T. Linden, Alex Pedrini, Noah S. J. Rogers, Julia C. Roman-Duval, Eva Schinnerer, Evan B. Skillman, Fabian Walter, Tony D. Weinbeck, Benjamin F. Williams   +31 more
doaj   +1 more source

Pursuant to Section 1 of House File 466 [PDF]

, 2011
Pursuant to Section 1 of House File 466 of the 81' General Assembly, the Iowa Department of Transportation (DOT) is required to report to the Legislative Council regarding the progress of the building project for the Motor Vehicle Division and to inform ...

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Continuum Enhancement and Line Asymmetries of Solar Flares in Different Heating Models: Alfvén Waves, Nonthermal Electron Beams, and Their Joint Effect

The Astrophysical Journal
How the plasma in the atmosphere is heated during a solar flare remains inconclusive. Nonthermal electron beams are usually considered as an essential heating source, yet Alfvén waves have also been proposed as a promising heating mechanism.
Jun Tian, Ying Li, Jie Hong, M. D. Ding
doaj   +1 more source

The Secular Periodic Evolution of X-Ray Quasiperiodic Eruptions Driven by Star−Disk Collisions

The Astrophysical Journal
We study the secular periodic evolution of quasiperiodic eruptions (QPEs) for GSN069 and eRO-QPE2 assuming that they are driven by star−disk collisions. We set up numerical simulations and compared them with the observed periodic decay of ∼−3160 ± 720 s ...
Jiajun Xian, Fupeng Zhang, Liming Dou, Zhining Chen   +3 more
doaj   +1 more source

A New High-latitude H i Cloud Complex Entrained in the Northern Fermi Bubble

The Astrophysical Journal Letters
We report the discovery of 11 high-velocity H i clouds at Galactic latitudes of 25°–30°, likely embedded in the Milky Way’s nuclear wind. The clouds are detected with deep Green Bank Telescope 21 cm observations of a 3 $\mathop{.}\limits^{\unicode{x000b0}
Rongmon Bordoloi, Andrew J. Fox, Felix J. Lockman   +2 more
doaj   +1 more source

Commento all’art. 466-bis c.p. (Aggiornamento) [PDF]

Commento dottrinale e giurisprudenziale all’art.
Francesco Centonze
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ELED 466 Teaching Social Studies in the Elementary School [PDF]

, 1995
Course syllabus for ELED 466 Teaching Social Studies in Elementary ...
Tsolakides, Liz
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