Nebula Mata Kucing
Nebula Mata Kucing (NGC 6543) adalah nebula pada rasi bintang Draco. Struktur nebula ini merupakan salah satu struktur nebula paling kompleks yang pernah diketahui. Nebula ini ditemukan oleh William Herschel pada tanggal 15 Februari 1786.
| Nebula emisi | |
|---|---|
| Nebula planeter | |
 Gambar komposit menggunakan gambar optik HST dan data sinar-X dari Chandra X-ray Observatory | |
| Data pengamatan: J2000 epos | |
| Asensio rekta | 17j 58m 33.423d[1] |
| Deklinasi | +66° 37′ 59.52″[1] |
| Jarak | 3,3±0,9 kly (1,0±0,3 kpc)[2] ly |
| Magnitudo semu (V) | 9.8B[1] |
| Dimensi semu (V) | Core: 20″[2] |
| Rasi bintang | Draco |
| Ciri-ciri fisik | |
| Jari-jari | Core: 0.2 ly[note 1] ly |
| Magnitudo mutlak (V) | −0,2+0,8 −0,6B[note 2] |
| Ciri penting | struktur kompleks |
| Sebutan | NGC 6543,[1] Nebula Siput,[1] Nebula Bunga Matahari,[1] (termasuk IC 4677),[1] Caldwell 6 |
Referensi
- Balick, Bruce; Preston, Heather L. (October 1987), "A wind-blown bubble model for NGC 6543", Astronomical Journal, 94: 958–963, doi:10.1086/114528
- Balick, Bruce; Wilson, Jeanine; Hajian, Arsen R. (2001), "NGC 6543: The Rings Around the Cat's Eye", Astronomical Journal, 121: 354, doi:10.1086/318052
- Bianchi, L.; Cerrato, S.; Grewing, M. (November 1986), "Mass loss from central stars of planetary nebulae - The nucleus of NGC 6543", Astronomy and Astrophysics, 169 (1-2): 227–236
- Guerrero, Martín A.; Chu, You-Hua; Gruendl, Robert A.; Williams, Rosa M.; Kaler, James B. (2001), "The Enigmatic X-Ray Point Sources at the Central Stars of NGC 6543 and NGC 7293", Astrophysical Journal, 553 (1): L55–L58, doi:10.1086/320509
- Hora, Joseph L.; Latter, William B.; Allen, Lori E.; Marengo, Massimo; Deutsch, Lynne K.; Pipher, Judith L. (2004), "Infrared Array Camera (IRAC) Observations of Planetary Nebulae", Astrophysical Journal Supplement Series, 154 (1): 296–301, doi:10.1086/422820
- Hyung, S.; Aller, L. H.; Feibelman, W. A.; Lee, W. B.; de Koter, A. (2000), "The optical spectrum of the planetary nebula NGC 6543", Monthly Notices of the Royal Astronomical Society, 318 (1): 77–91, doi:10.1046/j.1365-8711.2000.03642.x
- Miranda, L. F.; Solf, J. (1992), "Long-slit spectroscopy of the planetary nebula NGC 6543 - Collimated bipolar ejections from a precessing central source?", Astronomy and Astrophysics, 260 (1-2): 397–410
- Reed, Darren S.; Balick, Bruce; Hajian, Arsen R.; Klayton, Tracy L.; Giovanardi, Stefano; Casertano, Stefano; Panagia, Nino; Terzian, Yervant (1999), "Hubble Space Telescope Measurements of the Expansion of NGC 6543: Parallax Distance and Nebular Evolution", Astronomical Journal, 118 (5): 2430–2441, doi:10.1086/301091
- SIMBAD (December 22, 2006), Results for Cat's Eye Nebula, SIMBAD, Centre de Données Astronomiques de Strasbourg
- Wesson, R.; Liu, X.-W. (2004), "Physical conditions in the planetary nebula NGC 6543", Monthly Notices of the Royal Astronomical Society, 351 (3): 1026–1042, doi:10.1111/j.1365-2966.2004.07856.x
- Distance × sin(diameter_angle / 2 ) = 0.2 ly. radius
- 9.8B apparent magnitude – 5×{log(1.0 ± 0.3 kpc distance) − 1} = −0,2+0,8
−0,6B absolute magnitude
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.