Petite AGNs Reveal New Secrets

The strength of the silicate dust emission feature in many of the low-luminosity AGN (denoted S10, the black circles), is unusually large compared to the amount of gas in their nucleus (measured by log NH). One possible explanation is that these galaxies harbour just a small amount of optically-thin dust, which is expected according to some models that predict the disappearance of the dusty torus in low-luminosity AGN.

Créditos:

International Gemini Observatory/NOIRLab/NSF/AURA

About the Image

Id:geminiann12008b
Tipo:Chart
Release date:6 de Julio de 2012 a las 13:53
Related announcements:geminiann12008
Size:500 x 380 px

Sobre el Objeto

Categoría:Illustrations

Formatos de Imágenes

Large JPEGLarge JPEG
39,5 KB
Screensize JPEGScreensize JPEG
74,2 KB

Zoomable


Fondos de Pantalla

1024x7681024x768
68,1 KB
1280x10241280x1024
88,4 KB
1600x12001600x1200
111,7 KB
1920x12001920x1200
107,6 KB
2048x15362048x1536
282,3 KB