共 9 条
- [2] IONIZED GAS IN SPIRAL AND IRREGULAR GALAXIES [J]. ASTROPHYSICAL JOURNAL, 1962, 135 (03) : 694 - &
- [4] ELECTRON-TEMPERATURE IN ELLIPTICAL GALAXY NGC-1052 [J]. ASTROPHYSICAL JOURNAL, 1976, 203 (02) : L49 - L51
- [5] INTERSTELLAR MATTER IN ELLIPTICAL NEBULAE [J]. ASTROPHYSICAL JOURNAL, 1959, 129 (03) : 583 - 595
- [6] OSTERBROCK DE, 1971, NUCLEI GALAXIES
- [7] OSTERBROCK DE, 1962, DISTRIBUTION MOTION, P111
- [8] PHYSICAL CONDITIONS AND STRUCTURE IN NGC-7293, HELIX [J]. ASTROPHYSICAL JOURNAL, 1975, 198 (03) : 593 - 603
- [9] WARNER JW, 1973, ASTROPHYS J, V186, P21