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Subject
- Astronomy12
- Astrophysics12
- Stars--Observations5
- White dwarf stars5
- Cataclysmic variable stars4
- Cataclysmic variable stars--Spectra4
- Imaging systems in astronomy4
- Sloan Digital Sky Survey4
- Low mass stars2
- Binary stars1
- Double stars--Orbits1
- Eclipsing binaries1
- Neutron stars1
- Pulsars1
- X-ray astronomy1
- X-ray sources, Galactic1