L2 puppis
L 2 Puppis or L 2 Pup for short or HD 56096 , HIP 34922 or HR 2748 , is a red giant in the constellation Puppis and has a distance of 64 pc . The star has a bipolar planetary nebula , which presumably arises from the gas from L 2 Puppis. This nebula is 900 million kilometers from its central star. Seen from the earth, we have an angle of 84 ° on this nebula. The mass of this star is not exactly determined. It was given as 0.7 solar masses by a team led by Loykou in 2015, while a year earlier a team led by Kervella had given the mass as 2 solar masses. In 1998 it was determined by Dumm and Schild to be 1.7 solar mass. Furthermore, the team around Kervella suspects that the star could have a second red giant which is 300 million kilometers from the main star.
Web links
- A heavenly butterfly hatches from its dusty cocoon June 10, 2015 - + photo, card & animation
Individual evidence
- ↑ Daniela Zeibig: The birth of a butterfly. Images from the Very Large Telescope show how the star L2 Puppis becomes a bipolar planetary nebula in the shape of a butterfly. In: Spektrum.de. Retrieved June 11, 2015 .
- ↑ P. Kervella, M. Montargès, E. Lagadec, ST Ridgway, X. Haubois, JH Girard, K. Ohnaka, G. Perrin, and A. Gallenne: The dust disk and companion of the nearby AGB star L2 Puppis SPHERE / ZIMPOL polarimetric imaging at visible wavelengths. (pdf) In: Astronomy & Astrophysics. May 6, 2015, accessed June 11, 2015 .