IAU S234 summarises current research on planetary nebulae, in reviews by leading experts in the field.While Trot values derived for the J=1 and 0 levels are Al 80 125 K in the Galactic ISM, the J agt; 2 lines require Trot agt; 200-500 K (Rachford et al. ... The presence of hundreds of nebular H2 absorption lines in the FUSE spectrum of the Dumbbell was first reported by McCandliss et al. ... pole-on while the central star of the Dumbbell is viewed through the torus. where molecules are more likely to survive . ... A preliminary fit to the v = 0 lines yields Trot ~ 800 K (Dinerstein aamp; Bowers 2004).
|Title||:||Planetary Nebulae in Our Galaxy and Beyond (IAU S234)|
|Author||:||Michael J. Barlow, Roberto H. Méndez|
|Publisher||:||Cambridge University Press - 2006|