Planetary nebula [
http://en.wikipedia…] NGC 2440 has an intriguing bow-tie [
http://www.folds.ne…] shape in this stunning view [
http://hubblesite.o…] from space. The nebula is composed of material cast off by a dying sun-like star as it enters its white dwarf phase [
http://antwrp.gsfc.…] of evolution. Details of remarkably complex structures are revealed within [ http://adsabs.harvar d.edu/abs/1998ApJ... 493..803L ] NGC 2440, including dense ridges of material swept back from the nebula's central star. Near the center of the view, the star itself is one of the hottest known [
http://antwrp.gsfc.…], with a surface temperature of about 200,000 kelvins [
http://lamar.colost…]. About 4,000 light-years from planet Earth toward the nautical constellation Puppis [
http://hawastsoc.or…], the nebula spans over a light-year and is energized by ultraviolet light from the central star. The false-color image [
http://archive.stsc…] was recorded earlier this month using the Hubble's Wide-Field Planetary Camera 2(WFPC2), demonstrating still impressive imaging capabilities following the failure of the Advanced Camera for Surveys.
Explanation
Planetary nebula [
http://en.wikipedia…] NGC 2440 has an intriguing bow-tie [
http://www.folds.ne…] shape in this stunning view [
http://hubblesite.o…] from space. The nebula is composed of material cast off by a dying sun-like star as it enters its white dwarf phase [
http://antwrp.gsfc.…] of evolution. Details of remarkably complex structures are revealed within [ http://adsabs.harvar d.edu/abs/1998ApJ... 493..803L ] NGC 2440, including dense ridges of material swept back from the nebula's central star. Near the center of the view, the star itself is one of the hottest known [
http://antwrp.gsfc.…], with a surface temperature of about 200,000 kelvins [
http://lamar.colost…]. About 4,000 light-years from planet Earth toward the nautical constellation Puppis [
http://hawastsoc.or…], the nebula spans over a light-year and is energized by ultraviolet light from the central star. The false-color image [
http://archive.stsc…] was recorded earlier this month using the Hubble's Wide-Field Planetary Camera 2(WFPC2), demonstrating still impressive imaging capabilities following the failure of the Advanced Camera for Surveys.
Explanation
