Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.eso.org/~mvandena/PosterPPV_christiaan.pdf Дата изменения: Thu Oct 20 12:37:57 2005 Дата индексирования: Tue Oct 2 00:08:18 2012 Кодировка: Поисковые слова: massive stars

EXTE

NDED MID

-IR EMISSION
1 1

IN

H

ERBIG
2

DETECTED WITH
1 2 3 4

AE/BE STARS SPITZER'S IRS
3 4

C. Boersma , A.G.G.M. Tielens , L.B.F.M. Waters , J. Bouwman , M.E. van den Ancker
Kapteyn Astronomical Institute Astronomical Institute ``Anton Pannekoek'' Max-Planck-Institut fЭr Astronomie European Southern Observatory

INTRODUCTION · Variety of solar system objects contain a surprising amount of complex organics · Trace the evolution of organic molecules from the molecular cloud environment to the circumstellar disks all along during the planet-formation phase

HD 95881

HD 36917

PAH PAH

PAH PAH

wavelength

11.2 m
Background

12.7 m

Protostars & Planets V, Hawaii 2005

UU

79'' off-target

38'' (2/3) 19'' (1/3)

Spitzer IRS, Short Low, order 1, fully reduced spectra from 7.4 - 14.5 m for HD 95881 and HD 36917. In red the 79'' off-target spectrum for HD 36917 is presented. Also shown are the 2-D spectral images for one of the two node positions. The arrows indicate the position of the 11.2 and 12.7 m PAH features, which are clearly extended for HD 36917.

CONCLUSION · Extended PAH emission for HD 36917 · HD 95881 isolated · HD 36917 not-isolated

FUTURE · Study the spatial and spectroscopic variations in the PAH bands in a wide sample of sources

contact: boersma@astro.rug.nl | www.astro.rug.nl/~boersma