Poster Open Access

λ Andromedae: Driving a post-main sequence wind from a solar-mass star

Ó Fionnagáin, D.; Vidotto, A. A.; Petit, P.; Neiner, C.; Manchester IV, W.; Folsom, C. P.; Hallinan, G.

We simulated the wind of lambda Andromeda, using two 3D MHD approaches. We modelled the wind as being hot (coronal-driven) and cold (Alfvén wave driven). From these simulations we can derive thermal radio emission from the stellar wind. By comparing this flux density to archival observations of the star, we can place tight constraints on our wind model. We found a mass-loss rate of \(3 \times 10^{-9} \rm{M}_{\odot} \rm{yr}^{-1}\) which agrees with evolutionary trends in mass-loss rates for stars of this type. Further radio observations of this object would be neccessary to determine the exact mechanism producing the radio emission from this star, and therefore aid in tightening the constraints on the wind models.

 

Files (575.9 kB)
Name Size
CS20half_poster_ofionnagain.pdf
md5:a35ddc5da0cf994d1e40a98208cb1a08
279.2 kB Download
poster_ofionnagain_dualta_thumb.PNG
md5:2002879cee7cce9dc6641c9acc08d49e
296.7 kB Download
44
42
views
downloads
All versions This version
Views 4444
Downloads 4242
Data volume 11.8 MB11.8 MB
Unique views 3939
Unique downloads 3636

Share

Cite as