Subject
- white dwarf stars41
- variable stars38
- late-type stars36
- sloan photometry36
- astronomical object identification35
- metallicity35
- apparent magnitude33
- effective temperature32
- m stars32
- line intensities25
- optical observation25
- infrared astronomy24
- pre-main sequence stars24
- radio astronomy23
- stellar ages23
- ccd photometry21
- catalogs17
- photographic photometry16
- extinction15
- infrared sources15