Milky way
A Synthesis of Fundamental Parameters of Spiral Arms, Based on Recent Observations in the Milky Way
... Stars within 5 kpc of the center of the Milky Way are not uniformly distributed. Inner spiral arms are seen tan- gentially at l = 328˚ (Norma or 3-kpc-arm at l = –32˚) and at l = 339˚ (“start of Perseus ...
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Milky Way Dwarf Galaxies: A Search for Stellar Substructure
... Comprehensive studies of the MW satellite galaxies have led to numerous investigations of their role in galaxy formation. In the ΛCDM cosmological paradigm, galaxies form hierarchically through merger and accretion of ...
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Positron Annihilation in the Milky Way: Searching for the source of Galactic antimatter
... the Milky Way. One way to then ex- plain the high bulge/disk annihilation ratio is that some disk positrons find their way into the Galactic bulge before they ...
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The escape velocity curve of the Milky Way in Modified Newtonian dynamics
... We determine the escape velocity from the Milky Way (MW) at a range of Galactocentric radii in the context of Modified Newtonian Dynamics (MOND). Due to its non-linear nature, escape is possible if the MW ...
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STARE2: Detecting Fast Radio Bursts in the Milky Way
... this rate is a lower limit due to incompleteness of the ASKAP sample and contributions to the DM from the host galaxy and circumgalactic medium of the Milky Way that were not taken into account. Luo et al. ...
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The Milky Way Galaxy is Heading for a Major Cosmic Collision
... – (6 billion years) Complete Milky Way – Andromeda merger, forms an elliptical galaxy.. Galaxy Mergers[r] ...
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The tilt of the velocity ellipsoid in the Milky Way with Gaia DR2
... Several mass models of the Milky Way have been proposed by matching a variety of constraints (e.g. McMillan 2011; Piffl et al. 2014; McMillan 2017). Particularly useful for the inter- pretation of the ...
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Faint (and bright) variable stars in the satellites of the Milky Way
... Figure 2. Period-amplitude diagram for fundamental mode RR Lyrae stars in the halo (small + symbols, [25]) and in the Milky Way’s ultra-faint satellites. Reference for the later can be found in [24]. Leo V data ...
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Astrometric surveys: Solving the Milky Way puzzle with Gaia
... Figure 2. The predicted sky coverage of Gaia in Galactic coordinates. The colours indicate the number of times a particular region on the sky is observed. By using the Galactic coordinate grid one can appreciate which ...
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The Milky Way and its gas: Cold fountains and accretion
... Figure 3. New GBT HI observations of the area ahead of the path of the Smith Cloud (visible in the lower left). This “channel map” shows HI at the velocity calculated from the projection of the velocity components given ...
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Triaxial orbit-based modelling of the Milky Way Nuclear Star Cluster
... cluster along the line of sight. Our results are in agreement with the direct measurement of the supermassive black hole mass using the motion of stars on Keplerian orbits. The mass-to-light ratio is consistent with ...
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The GALAH survey: velocity fluctuations in the Milky Way using red clump giants
... the Milky Way also hosts a central bar extending out to 5 kpc (Wegg, Gerhard & Portail 2015), the dynamical effect of which can also be seen in the Solar neighbourhood as structures in velocity ...the ...
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Surveys of the Milky Way and Magellanic System in the λ21-cm line of atomic hydrogen
... Surveys of the 21-cm emission of the Milky Way were begun in the early 1950’s, Oort et al (1958) and made great progress through the 1960’s and 1970’s, (reviewed by Burton, 1988). But by about 1980 the ...
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Giant molecular filaments in the Milky Way II. The fourth Galactic quadrant
... Three methods have been used so far to systematically search for tens-of-parsec scale filaments. Two of them, based on identifica- tion of the filaments as extinction features against the MIR / NIR background of the ...
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Simulated Milky Way analogues: implications for dark matter direct searches
... of Milky Way type galaxies obtained within the “Evolution and Assembly of GaLaxies and their Environments” (EA- GLE) project, and identify those that best satisfy observational constraints on the ...
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Jeans that fit : weighing the mass of the Milky Way analogues in the ΛCDM universe
... A dynamical model is an essential tool for robust measurement of a mass of a galaxy. In particular, for the Milky Way (MW: Galaxy), there are a variety of techniques to measure its mass, e.g. the orbital ...
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The HI/OH/Recombination line survey of the inner Milky Way (THOR)
... Based on the early results presented in the previous section, we envision a multitude of future scientific applications. The advan- tage of THOR is that we do not have to rely on single case studies but that larger ...
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Mass extinction and the structure of the Milky Way
... up-to-date Milky Way model and solar orbit data in order to test the hypothesis that the Sun’s galactic spiral arm crossings cause mass extinction events on ...the Milky Way’s spiral arms by ...
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Unifying the planar bar and the boxy bulge of the Milky Way
... Abstract. For some time the Milky Way has been understood as a barred disk galaxy. Star count observations have provided evidence for two bars at apparently different orientations, the boxy bulge and a long ...
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Giant molecular filaments in the Milky Way
... the Milky Way, molecular clouds typically appear filamentary, and mounting evidence indicates that this morphology plays an important role in star ...the Milky Way’s spiral structure? Using archival ...
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