Mid-IR spectra of HD 142527 inner disc and common dust types

Mid-IR spectrum of the inner region of the protoplanetary disc around the young star HD 142527, as observed with the MIDI instrument at the VLT Interferometer (upper). Below it are shown laboratory spectra of two crystalline minerals as well as of an Interplanetary Dust Particle (IDP; captured in the Earth's upper atmosphere) with hydrated silicates and, at the bottom, a typical telescopic spectrum of dust grains in the interstellar space. The spectral "signatures" of crystalline pyroxene and olivine, i.e. peaks at wavelength 9.2 and 11.3 µm, respectively, are clearly visible in the spectrum of the inner stellar disc, demonstrating the presence of these species in that region of the disc.

Källa:

ESO

Om bilden

ID:eso0435a
Typ:Diagram
Publiceringsdatum:24 november 2004
Relaterade pressmeddelanden:eso0435
Storlek:800 x 942 px

Om objektet

Namn:HD 142527
Typ:Milky Way : Star : Circumstellar Material : Disk : Protoplanetary
Avstånd:450 ljusår
Kategori:Stars

Bildformat

Originalstorlek
224,2 kB
Stor jpeg
128,6 kB
Skärmstor jpeg
147,8 kB

Färger och filter

BandTeleskop
Infrarött
Near-IR
Very Large Telescope Interferometer
MIDI