Discovery of a detached HI gas shell surrounding alpha Orionis

@article{Bertre2012DiscoveryOA,
  title={Discovery of a detached HI gas shell surrounding alpha Orionis},
  author={T. Bertre and L. Matthews and E. G'erard and Y. Libert},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2012}
}
We report the detection of the HI line at 21 cm in the direction of alpha Ori with the Nancay Radiotelescope and with the Very Large Array. The observations confirm the previous detection of HI emission centered on alpha Ori, but additionally reveal for the first time a quasi-stationary detached shell of neutral atomic hydrogen ~4 arcmin. in diameter (0.24 pc at a distance of 200 pc). The detached shell appears elongated in a direction opposite to the star's space motion. A simple model shows… Expand
27 Citations
The astrosphere of the Asymptotic Giant Branch star CIT 6
IRC 10414: a bow-shock-producing red supergiant star ⋆
A H I Imaging Survey Of Asymptotic Giant Branch Stars
...
1
2
3
...

References

SHOWING 1-10 OF 48 REFERENCES
HI in circumstellar environments
Atomic hydrogen in asymptotic giant branch circumstellar environments. A case study: X Her
The formation of a detached shell around the carbon star Y CVn
AKARI/FIS Mapping of the ISM-Wind Bow Shock around $\alpha $ Orionis
The Astrosphere of the Asymptotic Giant Branch Star Irc+10216
Discovery of an H I Counterpart to the Extended Tail of Mira
...
1
2
3
4
5
...