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Subject
- astronomical reference materials[remove]52
- galaxies9
- optical astronomy9
- photometry9
- catalogs7
- radial velocity7
- stellar spectral types6
- wide-band photometry6
- radio astronomy5
- redshifted5
- chemical abundances4
- globular star clusters4
- active galactic nuclei3
- astrometry3
- atomic physics3
- eclipsing binary stars3
- gamma-ray astronomy3
- infrared photometry3
- open star clusters3
- quasars3
