共 50 条
- [33] CHEMICAL ABUNDANCES OF A NEW HALO PLANETARY NEBULA ASTROPHYSICAL JOURNAL, 1977, 213 (02): : 421 - &
- [36] Fading and variations in the spectrum of the central star of the young Planetary Nebula SAO 244567 (Hen 1357) International Astronomical Union - Symposium, (180):
- [38] The morphology and kinematics of the complex polypolar planetary nebula NGC 2440 ASTROPHYSICAL JOURNAL, 1998, 493 (02): : 803 - 810
- [40] CHEMICAL ABUNDANCES IN A NEW HALO PLANETARY-NEBULA ASTROPHYSICAL JOURNAL, 1984, 278 (02): : 610 - 614