We show that interstellar absorption in simple stellar population (SSP) model spectra constructed from the original library artificially enhances $W$(CaII K) by $\gtrsim20\%$ at young ages ($<400$ Myr); dramatically enhances the strength of stellar NaI D in starbursting systems (by ${\gtrsim}50\%$); and enhances stellar NaI D in older stellar populations (${\gtrsim}10$ Gyr) by ${\gtrsim}10\%$.
Astrophysics of Galaxies
The updated algorithm allows for non-parametric recovery of the underlying (i. e., deconvolved) radial profile and vertical height of optically thin, axisymmetric disks imaged in either thermal emission or scattered light.
Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics
In the last five decades, numerical simulations have provided invaluable insights into the evolution of galactic discs over cosmic times.
Astrophysics of Galaxies
Our analysis indicates that distances to NEOs on the scale of $\sim0. 5$ AU can be constrained to below the percent level within a single night, depending on spacing of observations from one observatory.
Earth and Planetary Astrophysics
Planets in these Hot Water World triangles need to contain at least some heavier volatiles and are therefore interesting targets for atmospheric follow-up observations.
Earth and Planetary Astrophysics
Is there new physics hidden in the four-point function of the cosmic microwave background (CMB)?
Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory
We perform a number of 2D axisymmetric 3-fluid non-ideal MHD simulations of collapsing prestellar cores and clouds with non-equilibrium chemistry and leverage upon previously-published results.
Astrophysics of Galaxies
A major open issue concerning the active Sun is the effectiveness with which magnetic reconnection accelerates electrons in flares.
Solar and Stellar Astrophysics High Energy Astrophysical Phenomena Space Physics 85-08
We find high accretion rates ($>\,$10$^{-7}$ M$_{\odot}$yr$^{-1}$) and large disk masses ($\geq\,$10$^{-2}$ M$_{\odot}$) necessary to reproduce observed depletion, particularly in higher-mass, hotter post-AGB stars (T$_{\textrm{eff}}\geq$ 6000 K).
Solar and Stellar Astrophysics
To unlock the vast potential of the CMB trispectrum, we require both robust estimators and efficient computational tools.
Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory