R= 7.8±0.7 kpc and 2AR= 228±19 km sare derived. The LMC distance modulus is 18.45 on the same absolute calibration. Observed Cepheid γ velocities appear on average to be 3±1 km smore negative than the true corresponding center-of-mass velocities. The trend of increasing blueness ...
The OB stars are concentrated near the Galactic plane and should permit a determination of the distance to the Galactic center. van Leeuwen's new reduction of the Hipparcos catalog provides, after 824 Gould belt stars have been excluded, 6288 OB stars out to 1 kpc and Westin's compilation an...
Accurate astronomical distance determination is crucial for all fields in astrophysics, from Galactic to cosmological scales. Despite, or perhaps because o
Warped kinematics of the Milky Way revealed by Gaia a technique for selecting upper main sequence stars and giants without the need for individual extinction estimates, to a distance of 7 kpc from the Sun... E Poggio,R Drimmel,MG Lattanzi,... 被引量: 5发表: 2018年 Education Poised To ...
The age-kinematical features in the Milky Way outer disk We derive the mean velocity components at various Galactocentric radii from 8 to 14 kpc using about 40,000 red clump stars observed in the LAMOST survey. W...
Assuming that these contours mainly are populated by red clump giants and that the solar distance from the Galactic Center is 8.5 kpc the shift locates these stars at 13-14 kpc, so maybe we have a direct measure of the Milky Way radius. Based on observations ESO, La Silla}...
These functions are used\nto calculate the likelihood that a given star is a red giant in M31 versus a\nMilky Way dwarf. By applying this diagnostic method to our spectroscopic data\nset, we isolate 40 M31 red giants beyond a projected distance of R = 60 kpc\nfrom the galaxy's center...
By modeling the distribution ofGalactocentric latitudes forGCs, we have determined the half-angle of the cone of avoidance α 0 = 15. 0 4. 1 +2. 1 and the distance to the Galactic center R 0 = 7.3 ± 0.5 kpc (in the scale of the Harris (1996) catalog, the 2010 version) as ...
Galaxy (Milky Way)The influence of various factors on the statistical properties of the Galactic center distance ( R 0 ) estimate obtained by solving the general problem of determining the geometric parameters of a Galactic spiral arm from its segment with the inclusion of the distance to the ...