Abundance matching with the mean star formation rate: there is no missing satellites problem in the Milky Way above M200 ∼ 109 M⊙ [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We introduce a novel abundance matching technique that produces a more accurate estimate of the pre-infall halo mass, M200, for satellite galaxies. To achieve this, we abundance match with the mean star formation rate, averaged over the time when a ...
J. Read, D. Erkal
semanticscholar +1 more source
The effects of cosmic rays on the formation of Milky Way-mass galaxies in a cosmological context [PDF]
, 2019 We investigate the impact of cosmic rays (CR) and different modes of CR transport on the properties of Milky Way-mass galaxies in cosmological magneto-hydrodynamical simulations in the context of the AURIGA project. We systematically study how advection,
T. Buck +4 more
semanticscholar +1 more source
Untangling the Galaxy. I. Local Structure and Star Formation History of the Milky Way [PDF]
Astronomical Journal, 2019 Gaia DR2 provides unprecedented precision in measurements of the distance and kinematics of stars in the solar neighborhood. Through applying unsupervised machine learning on DR2's 5D data set (3D position + 2D velocity), we identify a number of clusters,
M. Kounkel, K. Covey
semanticscholar +1 more source
Are the Milky Way and Andromeda unusual? A comparison with Milky Way and Andromeda Analogs [PDF]
, 2020 Our Milky Way provides a unique test case for galaxy evolution models, thanks to our privileged position within the Milky Way's disc. This position also complicates comparisons between the Milky Way and external galaxies, due to our inability to observe the Milky Way from an external point of view.
arxiv +1 more source
Formation Imprints in the Kinematics of the Milky Way Globular Cluster System [PDF]
Astrophysical Journal, 2019 We report results on the kinematics of Milky Way (MW) globular clusters (GCs) based on updated space velocities for nearly the entire GC population. We found that a 3D space with the semimajor axis, the eccentricity, and the inclination of the orbit with
A. Piatti
semanticscholar +1 more source
The formation and early evolution of the Milky Way [PDF]
Symposium - International Astronomical Union, 1985 In broad outline, the traditional picture for the formation of the Milky Way can be summarized as follows. The proto-galaxy consisted of a slowly rotating cloud of metal-free gas that cooled by bremsstrahlung and recombination radiation. As the internal pressure of the gas decreased, it collapsed in stages with smaller dimensions, faster rotation ...
openaire +2 more sources
Very Metal-poor Stars in the Solar Vicinity: Kinematics and Abundance Analysis
The Astrophysical Journal, 2023 Very metal-poor stars contain crucial information on the Milky Way’s infancy. In our previous study we derived a mean age of ∼13.7 Gyr for a sample of these stars in the Sun’s vicinity.
Anastasiia Plotnikova +3 more
doaj +1 more source
The X-shaped Bulge of the Milky Way revealed by WISE [PDF]
, 2016 The Milky Way bulge has a boxy/peanut morphology and an X-shaped structure. This X-shape has been revealed by the `split in the red clump' from star counts along the line of sight toward the bulge, measured from photometric surveys. This boxy, X-shaped bulge morphology is not unique to the Milky Way and such bulges are observed in other barred spiral ...
arxiv +1 more source
From the Outside Looking in: What can Milky Way Analogues Tell us About the Star Formation Rate of Our Own Galaxy? [PDF]
, 2019 The Milky Way has been described as an anaemic spiral, but is its star formation rate (SFR) unusually low when compared to its peers? To answer this question, we define a sample of Milky Way Analogues (MWAs) based on stringent cuts on the best literature estimates of non-transient structural features for the Milky Way.
arxiv +1 more source
Formation, vertex deviation, and age of the Milky Way’s bulge: input from a cosmological simulation with a late-forming bar [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present the late-time evolution of m12m, a cosmological simulation of a Milky Way-like galaxy from the FIRE project. The simulation forms a bar after redshift z = 0.2.
V. Debattista +7 more
semanticscholar +1 more source