#ngc 7635

[spacewonder19]

The Claw and Bubble Nebulae ©

[quiltofstars]

The Bubble Nebula (NGC 7635, upper right) and the Lobster Claw Nebula (Sh2-157, lower left) // Alan Taylor

[blasteffect]

 NGC 7635 !

This Hubble image shows a massive "bubble" blown into space by a super-hot, massive star within.

The young star forming the Bubble Nebula is 45 times more massive than our Sun. Gas on the star gets so hot that it escapes away into space as a "stellar wind" moving at over 4 million miles per hour!

This outflow sweeps up the cold, interstellar gas in front of it, forming the outer edge of the bubble like a snowplow piles up snow in front of it as it moves forward.

Image credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

[dame-de-pique]

Glass plate slide of nebula NGC 7635, Oct 15th 1920

[bsuobservatory]

The Bubble Nebula, imaged at the Bridgewater State University Observatory, August 3, 2016. Processed by Rydia Hayes-Huer, post-processed by BEAR Team. Credit: BSU Experimental Astrophysics Research (BEAR) Team. Originally imaged in luminance and photometric red, green, and blue filters. Combines about 50 minutes of exposure time. Telescope: Celestron EdgeHD 14. Camera: Apogee Alta U47.

The Bubble Nebula is about 9,000 light-years away from us in the direction of the constellation Cassiopeia. Stars produce stellar wind as particles stream from their surfaces, and extremely hot, high-mass stars produce a lot of it - enough to blow bubbles in space, like the one we see here. The area is embedded in a molecular cloud which glows red due to hydrogen gas, excited by the high-energy light emitted by the hot star within the nebula.

[the-maddest-robot]

Picture of the bubble nebula and surrounding objects : Top left (the vague group of stars): M52 an open cluster

Center right: NGC 7538 an emission nebula (also known as the northern lagoon nebula)

Bottom center: NGC 7635/the bubble nebula and the surrounding hydrogen cloud

The ''bubble'' part of this nebula is created by the stellar wind (flow of gas, plasma and particle) emitted by the central star at nearly 650 million km/h hitting and compressing the surrounding interstellar gas. The central star (BD +602522) is currently estimated to be about 45 times heavier than our sun and about 4 million years old. Being so massive and thus very hot (it's a type O star) its lifespan is very limited for a star and it should go supernova in about 10 to 20 million years.

BD +602522 is slightly off center from the bubble, this is due to the interstellar gas being a bit more dense on one side and thus slowing the stellar wind more efficiently.

Single exposure to make the central star more visible.

Image taken using a CarbonStar 150/600 newtonian telescope with a 0.95 coma corrector, ZWO ASI294 monochrome camera. 12x300s image for each colour filter (LRGB) and 12x300s for the Ha filter, total imaging time 5h, stacking and processing done in PixInsight.

Starless version of the same image:

Older image where the bubble is more distinct from the background hydrogen clouds :

[without-ado]

Bubble Nebula l Hubble Telescope

[pixelatedcosmosastro]

The Bubble Nebula (NGC7635) with the Scorpion Cluster (M52)