// Workers AI · dad joke modeWhat did LoTr 1 say to LoTr 2? You're one ring ahead.
| Emission nebula | |
|---|---|
| Planetary nebula | |
| Observation data: J2000 epoch | |
| Right ascension | 05h 55m 06.6s[1] |
| Declination | −22° 54′ 02″[1] |
| Distance | 5,875[2] ly |
| Apparent diameter | 2' 26" ± 4"[3] |
| Constellation | Lepus |
| Designations | PN DeHt 1, PK 228-22 1, PN G228.2-22.1, V* AB Lep[1] |
LoTr 1 (Longmore-Tritton 1) is a bubble-shaped elliptical nebula with a binary central star system. LoTr 1 was discovered with 11 other planetary nebula under the LoTr Catalog and was discovered in 1980 by astronomers A.J Longmore and S.B. Tritton using the UK Schmidt Telescope.[4]
Characteristics
[edit]The nucleus of LoTr 1 has similar properties that can be found in other planetary nebulae like Abell 35 and LoTr 5, where the central star in nucleus consist of giant star and hot companion detected by International Ultraviolet Explorer.[5] The nebula features a central inner shell with an angular diameter of 47 ± 4" and outer shell with a more Irregular shape that has a diameter of 4 ± 26".[3] The inner shell is estimated to be 25 ± 4 km while the outer shell is estimated to be 25 ± 4 km.[6]
AB Leporis
[edit]AB Leporis is a binary star system that contains a K-type giant star with emission line and a white dwarf companion.[3] The K-type giant star is found to have barium abundance of 0.5 or greater thus classifies it as a Barium star.[3]
References
[edit]- 1 2 3 "V* AB Lep". simbad.cds.unistra.fr.
- ↑ "Longmore Tritton 1 PN in Lepus". chart32.de.
- 1 2 3 4 Tyndall, A. A.; Jones, D.; Boffin, H. M. J.; Miszalski, B.; Faedi, F.; Lloyd, M.; Boumis, P.; López, J. A.; Martell, S.; Pollacco, D.; Santander-García, M. (2013-12-11). "Two rings but no fellowship: LoTr 1 and its relation to planetary nebulae possessing barium central stars". Monthly Notices of the Royal Astronomical Society. 436 (3): 2082–2095. doi:10.1093/mnras/stt1713. ISSN 1365-2966.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ↑ Longmore, A. J.; Tritton, S. B. (1980). "A second list of new planetary nebulae found on United Kingdom 1.2-m Schmidt telescope plates". Monthly Notices of the Royal Astronomical Society. 193 (3): 521–524. doi:10.1093/mnras/193.3.521. ISSN 0035-8711.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ↑ Bond, Howard E.; Ciardullo, Robin; Meakes, Michael G. (1993). "The Abell 35-Type Planetary Nuclei". Symposium - International Astronomical Union. 155: 397–397. doi:10.1017/S0074180900171864. ISSN 0074-1809.
- ↑ Weinberger, R. (May 1989). "A catalogue of expansion velocities of galactic planetary nebulae". Astronomy & Astrophysics. 78 (301–324): 301. Bibcode:1989A&AS...78..301W.
