Keyphrases
Star Catalog
97%
Machine-readable
81%
XMM-Newton
79%
X-ray Sources
60%
X-ray
58%
Hipparcos Catalogue
56%
Ultra-compact
48%
X-ray Binaries
36%
White Dwarfs
36%
Johannes Kepler
36%
Neutron Stars
33%
X-ray Observations
30%
Globular Clusters
29%
Position Error
28%
Error Distribution
28%
Proper Motions
24%
Galactic Globular Clusters
24%
Cross-calibration
24%
High-resolution X-ray Spectroscopy
24%
Interstellar Medium
24%
Optical Studies
24%
X-ray Study
24%
Galactic Bulge
24%
Cassini
24%
Modern Value
24%
Gaussian Distribution
24%
Galaxy Clusters
24%
Ulugh Beg
24%
Tycho Brahe
24%
Iron Abundance
24%
Spectral Studies
24%
Helium
24%
Hot Gas
24%
Utrecht
24%
Spectral Indices
24%
Mass Radius
21%
Source Type
21%
Fainting
21%
Comparison with Data
20%
Measurement Error
20%
Low-mass X-ray Binaries
19%
Aldebaran
18%
Cataclysmic Variables
17%
Dust
16%
Background Source
16%
Neon
16%
Radial Temperature Profile
16%
Radial Distribution
16%
Active Galactic nuclei
14%
Position Measurement
12%
Physics
X Ray
100%
Astronomical Catalog
97%
X Ray Source
60%
Globular Cluster
48%
Low-Mass X-Ray Binary Stars
46%
Neutron Stars
41%
X Ray Binaries
36%
Position Error
36%
Gaussian Distribution
36%
White Dwarf
36%
Iron
32%
High Resolution
30%
Proper Motion
24%
Spectral Index
24%
High Temperature Gas
24%
Interstellar Matter
24%
Southern Sky
24%
X Ray Spectroscopy
24%
Early Star
24%
Galaxy Clusters
24%
Galactic Bulge
24%
Line Intensity
24%
Spectrographs
24%
Solar Spectra
24%
Photometer
24%
Physics
24%
Stellar Spectra
24%
Quantum Theory
24%
Hubble Space Telescope
17%
Cataclysmic Variables
17%
Astronomers
12%
Random Error
12%
Reference Star
12%
Right Ascension
12%
Active Galactic Nuclei
10%
X-Ray Observatories
10%
Radial Distribution
9%
Cool Cores
9%
Companion Star
9%
X-Ray Bursts
9%
Compact Binary Systems
6%
Gravitational Field
6%
Equations of State
6%
Broadband
6%
Emission Spectra
6%
Mass Distribution
6%
Line of Sight
6%
Light Emission
6%
Optical Property
6%
Optical Observation
6%