The Common Envelope Origins of the Fast Jet in the Planetary Nebula M 3-38
Abstract
We present the analysis of Multi-Espectrógrafo en GTC de Alta Resolución para Astronomía (MEGARA) high-dispersion integral field spectroscopic observations of the bipolar planetary nebula (PN) M 3-38. These observations unveil the presence of a fast outflow aligned with the symmetry axis of M 3-38 that expands with a velocity of up to ±225 km s-1. The deprojected space velocity of this feature can be estimated to be ≈320 ${}_{-60}^{+130}$ km s-1, which together with its highly collimated morphology suggests that it is one of the fastest jets detected in a PN. We have also used Kepler observations of the central star of M 3-38 to unveil variability associated with a dominant period of 17.7 days. We attribute this to the presence of a low-mass star with an orbital separation of ≈0.12-0.16 au. The fast and collimated ejection and the close binary system point toward a common envelope formation scenario for M 3-38.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 2022
- DOI:
- 10.3847/2041-8213/ac78dc
- arXiv:
- arXiv:2206.10483
- Bibcode:
- 2022ApJ...933L..24R
- Keywords:
-
- Planetary nebulae;
- Stellar jets;
- Stellar winds;
- Low mass stars;
- 1249;
- 1607;
- 1636;
- 2050;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - Earth and Planetary Astrophysics
- E-Print:
- 9 pages, 5 figures, Accepted ApJ Letter