Results 11 to 20 of about 7,930,152 (319)
Reionization of the Local Group of Galaxies [PDF]
We present the first detailed structure formation and radiative transfer simulations of the reionization history of our cosmic neighbourhood. To this end, we follow the formation of the Local Group of galaxies and nearby clusters by means of constrained ...
Alvarez+34 more
core +11 more sources
How dust absorbs and scatters starlight as a function of wavelength (known as the interstellar extinction curve) is crucial for correcting for the effects of dust extinction in inferring the true luminosity and colors of reddened astrophysical objects ...
Gao, Jian+3 more
core +4 more sources
ON THE MASS OF THE LOCAL GROUP [PDF]
We use recent proper motion measurements of the tangential velocity of M31, along with its radial velocity and distance, to derive the likelihood of the sum of halo masses of the Milky Way and M31. This is done using a sample halo pairs in the Bolshoi cosmological simulation of $ $CDM cosmology selected to match properties and environment of the Local
Andrey V. Kravtsov+4 more
openaire +7 more sources
On the local hypercenter of a group [PDF]
We introduce a local hypercenter of an arbitrary group and study its basic properties. With this concept, it turns out that classical theorems of Baer, Mal’cev and McLain on locally nilpotent groups can be obtained as special cases of statements which are valid in any group.
SILVA RAMOS, JOSÉ IVÁN, MAIER, RUDOLF
openaire +3 more sources
Functional and local renormalization groups [PDF]
We discuss the relation between functional renormalization group (FRG) and local renormalization group (LRG), focussing on the two dimensional case as an example. We show that away from criticality the Wess-Zumino action is described by a derivative expansion with coefficients naturally related to RG quantities.
Codello A, D'Odorico G, Pagani C
openaire +5 more sources
Constraining Dark Energy from the Local Group Dynamics
This Letter develops a method to constrain the cosmological constant Λ from binary galaxies, focusing on the Milky Way and Andromeda galaxies. We provide an analytical solution to the two-body problem with Λ and show that the ratio between the Keplerian ...
David Benisty+2 more
doaj +1 more source
Chains of Group Localizations [PDF]
We construct long sequences of localization functors L_a in the category of abelian groups such that L_a > L_b for infinite cardinals a < b less than some k. For sufficiently large free abelian groups F and a < b we have proper inclusions of L_aF into L_bF.
openaire +3 more sources
Several decades of observations of the most massive and most luminous stars have revealed a complex upper HR Diagram, shaped by mass loss, and inhabited by a variety of evolved stars exhibiting the consequences of their mass loss histories.
Roberta M. Humphreys
doaj +1 more source
BackgroundElectroconvulsive therapy (ECT) is recommended in treatment guidelines as an efficacious therapy for treatment-resistant depression. However, it has been associated with loss of autobiographical memory and short-term reduction in new learning ...
Richard J. Porter+12 more
doaj +1 more source