STARS, GAS, AND DARK MATTER IN THE SOLAR NEIGHBORHOOD

@article{McKee2015STARSGA,
  title={STARS, GAS, AND DARK MATTER IN THE SOLAR NEIGHBORHOOD},
  author={Christopher F. McKee and Antonio Parravano and David J. Hollenbach},
  journal={The Astrophysical Journal},
  year={2015},
  volume={814}
}
We reanalyze data on the surface densities and vertical distribution of baryonic matter in the solar neighborhood and tabulate the results. We find a local total surface density of M dwarfs of 17.3 ± 2.3 M ⊙ pc − 2 ?> , whcih is significantly higher than previous values. Our result for the total local surface density of visible stars (main-sequence stars and giants), 27.0 ± 2.7 M ⊙ pc − 2 ?> , is close to previous estimates due to a cancellation of opposing effects: more mass in M dwarfs, less… 

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References

SHOWING 1-10 OF 119 REFERENCES
Constraining the Galaxy's dark halo with RAVE stars
We use the kinematics of ∼200000 giant stars that lie within ∼1.5kpc of the plane to measure the vertical profile of mass density near the Sun. We find that the dark mass contained within the
The local surface density of disc matter mapped by Hipparcos
We determine the surface density of matter in the disc of the Galaxy at the solar position using K giant stars. The local space density and luminosity function of the giants is determined using
Weighing the local dark matter with RAVE red clump stars
We determine the Galactic potential in the solar neigbourhood from RAVE observations. We select red clump stars for which accurate distances, radial velocities, and metallicities have been measured.
A new determination of the local dark matter density from the kinematics of K dwarfs
We apply a new method to determine the local disc matter and dark halo matter density to kinematic and position data for ˜2000 K dwarf stars taken from the literature. Our method assumes only that
A Determination of the Local Density of White Dwarf Stars
The most recent version of the Catalog of Spectroscopically Identified White Dwarfs lists 2249 white dwarf stars. Among these stars are 109 white dwarfs that have either reliable trigonometric
KINEMATICAL AND CHEMICAL VERTICAL STRUCTURE OF THE GALACTIC THICK DISK. II. A LACK OF DARK MATTER IN THE SOLAR NEIGHBORHOOD,
We estimated the dynamical surface mass density Σ at the solar position between Z = 1.5 and 4 kpc from the Galactic plane, as inferred from the kinematics of thick disk stars. The formulation is
M Dwarfs from Hubble Space Telescope Star Counts. IV.
We study a sample of about 1400 disk M dwarfs that are found in 148 fields observed with the Wide Field Camera 2 (WFC2) on the Hubble Space Telescope and 162 fields observed with pre-repair Planetary
THE WHITE DWARFS WITHIN 20 PARSECS OF THE SUN: KINEMATICS AND STATISTICS
We present the kinematical properties, distribution of spectroscopic subtypes, and stellar population subcomponents of the white dwarfs within 20 pc of the Sun. We find no convincing evidence of halo
STELLAR POPULATIONS IN THE CENTRAL 0.5 pc OF THE GALAXY. II. THE INITIAL MASS FUNCTION
The supermassive black hole at the center of the Milky Way plays host to a massive, young cluster that may have formed in one of the most inhospitable environments in the Galaxy. We present new
Galactic Stellar and Substellar Initial Mass Function
We review recent determinations of the present‐day mass function (PDMF) and initial mass function (IMF) in various components of the Galaxy—disk, spheroid, young, and globular clusters—and in
...
...