K-band image of the peculiar star "Frosty Leo"

Frosty Leo is a magnitude 11 (post-AGB) star surrounded by an envelope of gas, dust, and large amounts of ice (hence the name). The associated nebula is of "butterfly" shape (bipolar morphology) and it is one of the best known examples of the brief transitional phase between two late evolutionary stages, asymptotic giant branch (AGB) and the subsequent planetary nebulae (PNe). For a three-solar-mass object like this one, this phase is believed to last only a few thousand years, the wink of an eye in the life of the star. Hence, objects like this one are very rare and Frosty Leo is one of the nearest and brightest among them. This image shows a 5 x 5 arcsec 2 K-band image of the peculiar star known as "Frosty Leo" obtained in 0.7 arcsec seeing. Although the object is comparatively bright (visual magnitude 11), it is a difficult AO target because of its extension of about 3 arcsec at visible wavelengths. The corrected image quality is about FWHM 0.1 arcsec.

Credit:

ESO

Bookmark and Share

About the Image

Id:eso0313j
Type:Observation
Release date:13 May 2003
Related releases:eso0313
Size:821 x 678 px

About the Object

Name:Frosty Leo
Type:• Milky Way : Star
• Milky Way : Nebula : Type : Planetary
• X - Nebulae
Distance:10000 light years

Image Formats

Large JPEG
131.8 KB
Screensize JPEG
132.8 KB

Wallpapers

1024x768
161.5 KB
1280x1024
244.9 KB
1600x1200
308.8 KB
1920x1200
325.2 KB
2048x1536
423.6 KB

Colours & filters

BandWavelengthTelescope
Infrared
K
2.2 μm Very Large Telescope Interferometer
AMBER

Also see our