He 2-147: A case in which the expansion parallax method fails
HST multi-epoch images and VLT integral-field, high resolution spectroscopy allowed us a robust determination of the 3-D geometry and orientation of the nebula surrounding He 2-147, and to measure its apparent expansion in the plane of the sky. Applying the expansion parallax method results in a distance which is significantly shorter that the one
Santander-García, Miguel et al.
Fecha de publicación:
0
2006