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8 papers · 2 filters
LLAMA: The - Relation of the most luminous local AGNs
Turgay Caglar, Leonard Burtscher, Bernhard Brand +17
The - relation is considered a result of co-evolution between the host galaxies and their super-massive black holes. For elliptical-bulge hosting inactive gala…
Metallicity and -element Abundance Gradients along the Sagittarius Stream as Seen by APOGEE
Christian R. Hayes, Steven R. Majewski, Sten Hasselquist +27
Using 3D positions and kinematics of stars relative to the Sagittarius (Sgr) orbital plane and angular momentum, we identify 166 Sgr stream members observed by the Apache Point Obs…
Sardinia Radio Telescope observations of Local Group dwarf galaxies -- I. The cases of NGC6822, IC1613, and WLM
A. Tarchi, P. Castangia, G. Surcis +10
Almost all dwarf galaxies in the Local Group that are not satellites of the Milky Way or M31, belong to either one of two highly-symmetric planes. It is still a matter of debate, w…
A Search for Intrinsic HI 21 cm and OH 18 cm Absorption Toward Compact Radio Sources
Kathryn Grasha, Jeremy Darling, Alberto Bolatto +2
We present the results of a large search for intrinsic HI 21 cm and OH 18 cm absorption in 145 compact radio sources in the redshift range 0.02< z <3.8 with the Green Bank Telescop…
Revisiting the Temperature of the Diffuse ISM with CHESS Sounding Rocket Observations
Nicholas Kruczek, Kevin France, Keri Hoadley +2
Measuring the temperature and abundance patterns of clouds in the interstellar medium (ISM) provides an observational basis for models of the physical conditions within the clouds,…
Ambipolar diffusion in large Prandtl number turbulence
Axel Brandenburg
We study the effects of ambipolar diffusion (AD) on hydromagnetic turbulence. In most of the cases, we use the single fluid approximation where the drift velocity between charged a…