August 8th, 2012 at 11:24AM
(via APOD: 2012 August 4 - The Bubble Nebula) Image Credit & Copyright: Yves Van den Broek Seen through the constellation Cassiopeia, the Queen, NGC 7635, the Bubble Nebula, is formed from a hot O star that has carved a 10 light-year clear space in the molecular cloud surrounding it. The inner part of the bubble is glowing gasses from the star’s formation. This shot is both in narrow-band imaging, in order to pick up the details of the nebula, and in broad-band to get a good star-field behind it.

(via APOD: 2012 August 4 - The Bubble Nebula)

Image Credit & Copyright: Yves Van den Broek

Seen through the constellation Cassiopeia, the Queen, NGC 7635, the Bubble Nebula, is formed from a hot O star that has carved a 10 light-year clear space in the molecular cloud surrounding it. The inner part of the bubble is glowing gasses from the star’s formation.

This shot is both in narrow-band imaging, in order to pick up the details of the nebula, and in broad-band to get a good star-field behind it.

1 note Source: apod.nasa.gov #APOD#NASA#Bubble Nebula#NGC 7635#stellar winds#stellar radiation#interstellar gas#molecular cloud#O star#stellar evolution#space#astronomy#science#stars
November 11th, 2011 at 4:20PM
(via APOD: 2011 November 7 - Star Forming Region S106) And now a butterfly nebula for you. Interestingly, this one is a combination emission and reflection nebula. The massive young star at the center of the nebula is blowing intense stellar winds out into the surrounding gas, ionizing it, and when it de-ionizes, it releases visible radiation. The dust surrounding this star forming region (the gas and dust are why it can even be a star forming region) further away from IRS 4 (the star) is reflecting the starlight, adding another layer to the image. Apparently, there are also hundreds of brown dwarfs in in the gas. I’d assume some infrared astronomy, in addition to visual spectra analysis, would help you determine that. Image Credit: GRANTECAN and IAC

(via APOD: 2011 November 7 - Star Forming Region S106)

And now a butterfly nebula for you.

Interestingly, this one is a combination emission and reflection nebula.

The massive young star at the center of the nebula is blowing intense stellar winds out into the surrounding gas, ionizing it, and when it de-ionizes, it releases visible radiation. The dust surrounding this star forming region (the gas and dust are why it can even be a star forming region) further away from IRS 4 (the star) is reflecting the starlight, adding another layer to the image.

Apparently, there are also hundreds of brown dwarfs in in the gas. I’d assume some infrared astronomy, in addition to visual spectra analysis, would help you determine that.

Image Credit: GRANTECAN and IAC

44 notes Source: apod.nasa.gov #APOD#NASA#astronomy#astrophysics#stellar nursery#S106#IRS 4#nebula#reflection nebula#emission nebula#stellar winds#ionization
November 8th, 2011 at 2:47PM
(via APOD: 2011 November 3 - IC 59 and IC 63 in Cassiopeia) Gamma Cas, a powerful star in the constellation Cassiopeia, the Queen, is just off the upper right of this image, and is providing the ultraviolet radiation that is ionizing these two gas and dust clouds and blowing them away. IC 63, to the right, is the object I fiddled with astronomical data from the ESO’s DSS/DSS-2 to try to create a composite image for. It is closer to the star and is showing a lot of red hydrogen-alpha light. IC 59, to the left, shows more blue because it is dust reflecting the starlight that is most prominent in the nebula. Someday, I’ll be able to make imagery like this from FITS data. Someday. Image Credit & Copyright: Ken Crawford (Rancho Del Sol Obs.)

(via APOD: 2011 November 3 - IC 59 and IC 63 in Cassiopeia)

Gamma Cas, a powerful star in the constellation Cassiopeia, the Queen, is just off the upper right of this image, and is providing the ultraviolet radiation that is ionizing these two gas and dust clouds and blowing them away. IC 63, to the right, is the object I fiddled with astronomical data from the ESO’s DSS/DSS-2 to try to create a composite image for. It is closer to the star and is showing a lot of red hydrogen-alpha light. IC 59, to the left, shows more blue because it is dust reflecting the starlight that is most prominent in the nebula.

Someday, I’ll be able to make imagery like this from FITS data. Someday.

Image Credit & Copyright: Ken Crawford (Rancho Del Sol Obs.)

4 notes Source: apod.nasa.gov #APOD#NASA#IC 59#IC 63#Cassiopeia#Gamma Cas#stellar winds#ionization#ultraviolet radiation#astronomy#astrophysics#stars#space#nebula#nebulae