Results 91 to 100 of about 10,594 (212)
A dynamical model of the local cosmic expansion
, 2014 We combine the equations of motion that govern the dynamics of galaxies in the local volume with Bayesian techniques in order to fit orbits to published distances and velocities of galaxies within $\sim 3$ Mpc. We find a Local Group (LG) mass $2.3\pm 0.7\
Ma, Yin-Zhe +3 more
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Project AMIGA: The Inner Circumgalactic Medium of Andromeda from Thick Disk to Halo
The Astrophysical JournalThe inner circumgalactic medium (CGM) of galaxies, where disk and halo processes intersect, remains poorly characterized despite its critical role in regulating galaxy evolution.
Nicolas Lehner +24 more
doaj +1 more source
CHIPS Science Investigation: Exploring the Interstellar Medium [PDF]
, 2003 This booklet describes the interstellar medium and the local bubble that is being studied by NASA’s Cosmic Hot Interstellar Plasma Spectrometer (CHIPS) satellite.
core
The M31–M33 Interaction: Impact on M31’s Center-of-mass Motion and Satellite Orbits
The Astrophysical JournalInspired by recent studies of the interaction between the Milky Way and the Large Magellanic Cloud and its implications for the Milky Way’s global dynamical history, we investigate how the massive satellite galaxy M33 influences the position and velocity
Ekta Patel +2 more
doaj +1 more source
Andromeda galaxy vs Milky Way galaxy
Communications of the Byurakan Astrophysical ObservatorySome physical features of the Andromeda galaxy are compared with their counterparts in the Milky Way to demonstrate that the Andromeda galaxy has traversed a longer evolutionary path. One of the evolutionary dependents in galaxies is the metallicity factor. The metallicity radial gradient in galaxies can also be used for this purpose.
openaire +1 more source
Fermi bubbles around the M31 galaxy
EPJ Web of Conferences, 2016 We have searched for an extended high-energy gamma-ray emission around the nearby giant spiral Andromeda galaxy M31 using almost 7 years of Fermi LAT data at energies above 300 MeV.
Pshirkov Maxim +2 more
doaj +1 more source
, 2014 We review chemical evolution models developed for M31 as well as the abundance determinations available for this galaxy. Then we present a recent chemical evolution model for M31 including radial gas flows and galactic fountains along the disk, as well ...
Matteucci, F., Spitoni, E.
core +1 more source
Stellar Metallicities and Gradients in the Faint M31 Satellites Andromeda XVI and Andromeda XXVIII
The Astrophysical JournalWe present ∼300 stellar metallicity measurements in two faint M31 dwarf galaxies, Andromeda XVI ( M _V = −7.5) and Andromeda XXVIII ( M _V = –8.8), derived using metallicity-sensitive calcium H and K narrowband Hubble Space Telescope imaging.
Sal Wanying Fu +13 more
doaj +1 more source
The Astronomical JournalOur neighboring galaxy M31 has been recently surveyed at the far- and near-ultraviolet (FUV and NUV) with the UVIT telescope on AstroSat, which provides unprecedented sensitivity to young stellar populations.
Denis A. Leahy +2 more
doaj +1 more source