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J/other/RAA/10.541 Carbon star list (90<l<270, |b|<6) (Liu+, 2010)
The following files can be converted to FITS (extension .fit or fit.gz)
table1.dat table2.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/other/RAA/10.541
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-r--r--r-- 1 cats 1005 5846 Jul 5 2010 table1.dat [txt] [txt.gz] [fits] [fits.gz] [html]
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Beginning of ReadMe :J/other/RAA/10.541 Carbon star list (90<l<270, |b|<6) (Liu+, 2010)
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Rotation curve of the Galactic outer disk derived from radial velocities and
UCAC3 proper motions of carbon stars.
Liu J.-C., Zhu Z.
<Res. Astron. Astrophys., 10, 541-552 (2010)>
=2010RAA....10..541L
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ADC_Keywords: Galaxies, rotation ; Stars, carbon
Keywords: astrometry - Galaxy: disk - Galaxy: kinematics and dynamics -
stars: carbon
Abstract:
The availability of astrometric data and radial velocities of carbon
stars near the Galactic plane enables us to investigate the kinematics
of the Milky Way, especially the rotation curve. The recently
published Third U.S. Naval Observatory CCD Astrograph Catalog (UCAC3)
provides the opportunity to test this problem using three-dimensional
velocity in order to obtain more reliable rotation curves. We intend
to study the Galactic rotation curve up to 15kpc using the radial
velocities and proper motions of carbon stars. The motivation for
using UCAC3 is to provide high precision proper motions which have
hardly been used in determining the rotation velocity of tracers.
Seventy-four carbon stars and carbon-rich Mira variables toward the
anti-center direction (90deg<l<270deg, |b|<6deg) are picked up
from the literature then matched with UCAC3 carbon star candidates to
obtain their proper motions. A rigorous geometrical method is employed
to compute the rotation velocity of each object. Taking carbon stars
as tracers, we find a flat rotation curve of 210+/-12km/s assuming
R0=8.0kpc for the galactocentric distance and V0=220km/s for the
rotation velocity of the Sun. Due to the uncertainties of distances,
the rotation velocities are more dispersed if tangential velocities
enter the calculation, compared to those derived from radial
velocities only. However, the whole rotation curve shows coherence
with previous results. Increasing observation and study of carbon
stars would be desirable in order to provide more homogeneous data for
the kinematical study of the Galactic disk.
Description:
Carbon Star List (90deg<l<270deg, |b|<6deg) obtained from
UCAC3, Cat. I/315, and Demers & Battinelli, 2007, Cat.
J/A+A/473/143; Groenewegen et al., 2002, Cat. J/A+A/390/511, and
Menzies et al., 2006, Cat. J/MNRAS/369/783.
Table 1 exhibits the resulting C stars with measurements of positions,
helio centric distance, radial velocities and UCAC3 proper motions.
The list contains 74 objects which have K magnitudes between 2.2 and
12.6, 51 in the south and 23 in the north.