Spitzer Measurements of Atomic and Molecular Abundances in the Type IIP SN 2005af

• We present results based on mid-infrared (3.6-30 μm) observations with the Spitzer Space Telescope of the nearby Type IIP supernova 2005af. We report the first ever detection of the SiO molecule in a Type IIP supernova. Together with the detection of the CO fundamental, this is an exciting finding as it may signal the onset of dust condensation in the ejecta. From a wealth of fine-structure lines we provide abundance estimates for stable Ni, Ar, and Ne that, via spectral synthesis, may be used to constrain nucleosynthesis models.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Keyword

Stars: Supernovae: General

Stars: Supernovae: Individual: Alphanumeric: SN 1987A

Stars: Supernovae: Individual: Alphanumeric: SN 2004dj

supernovae: individual (SN 2005af)

Formation and development of stars

Stjärnors bildning och utveckling

Publication and Content Type

ref (subject category)

art (subject category)