Westerhout 5 (Sharpless 2-199, LBN 667, Soul Nebula) is an emission nebula located in Cassiopeia. Several small open clusters are embedded in the nebula: CR 34, 632, and 634[citation needed] (in the head) and IC 1848 (in the body). The object is more commonly called by the cluster designation IC 1848.
Small emission nebula IC 1871 is present just left of the top of the head, and small emission nebulae 670 and 669 are just below the lower back area.
The galaxies Maffei 1 and Maffei 2 are both nearby the nebula, although light extinction from the Milky Way makes them very hard to see. Once thought to be part of the Local Group, they are now known to belong to their own group- the IC 342/Maffei Group.
This complex is the eastern neighbor of IC1805 (Heart Nebula) and the two are often mentioned together as the "Heart and Soul".
Generations of stars can be seen in this infrared portrait from NASA's Spitzer Space Telescope.
W5, a radio source within the nebula, spans an area of sky equivalent to four full moons and is about 6,500 light-years away in the constellation Cassiopeia. Like other massive star-forming regions, such as Orion and Carina, W5 contains large cavities that were carved out by radiation and winds from the region's most massive stars. According to the theory of triggered star formation, the carving out of these cavities pushes gas together, causing it to ignite into successive generations of new stars. The image in the gallery above contains some of the best evidence yet for the triggered star formation theory. Scientists analyzing the photo have been able to show that the ages of the stars become progressively and systematically younger with distance from the center of the cavities.[1]
References
^Koenig, Xavier P. & Lori E. Allen (Harvard-Smithsonian CfA) (August 22, 2008). . NASA/JPL-Caltech. Archived from the original on April 23, 2009.
Wikimedia Commons has media related to IC 1848.
Wikimedia Commons has media related to W5.
January 31, 2023
westerhout, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, 2019, learn, wh. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Westerhout 5 news newspapers books scholar JSTOR May 2019 Learn how and when to remove this template message Westerhout 5 Sharpless 2 199 LBN 667 Soul Nebula is an emission nebula located in Cassiopeia Several small open clusters are embedded in the nebula CR 34 632 and 634 citation needed in the head and IC 1848 in the body The object is more commonly called by the cluster designation IC 1848 Westerhout 5Emission nebulaH II regionDetail of Westerhout 5Observation data J2000 0 epochRight ascension02h 55m 24sDeclination 60 24 36 Distance7 500 lyApparent dimensions V 150 75 ConstellationCassiopeiaPhysical characteristicsAbsolute magnitude V 6 5DesignationsSh2 199 LBN 667 Cluster is IC 1848See also Lists of nebulaeSmall emission nebula IC 1871 is present just left of the top of the head and small emission nebulae 670 and 669 are just below the lower back area The galaxies Maffei 1 and Maffei 2 are both nearby the nebula although light extinction from the Milky Way makes them very hard to see Once thought to be part of the Local Group they are now known to belong to their own group the IC 342 Maffei Group This complex is the eastern neighbor of IC1805 Heart Nebula and the two are often mentioned together as the Heart and Soul Generations of stars can be seen in this infrared portrait from NASA s Spitzer Space Telescope The Heart Nebula and Westerhout 5 are seen in this infrared mosaic from NASA s WISE telescope IC 1848 area imaged using amateur telescope Credit Jeff Johnson Star formation Edit source source source source source source source source The W5 stellar blast furnace W5 a radio source within the nebula spans an area of sky equivalent to four full moons and is about 6 500 light years away in the constellation Cassiopeia Like other massive star forming regions such as Orion and Carina W5 contains large cavities that were carved out by radiation and winds from the region s most massive stars According to the theory of triggered star formation the carving out of these cavities pushes gas together causing it to ignite into successive generations of new stars The image in the gallery above contains some of the best evidence yet for the triggered star formation theory Scientists analyzing the photo have been able to show that the ages of the stars become progressively and systematically younger with distance from the center of the cavities 1 References Edit Koenig Xavier P amp Lori E Allen Harvard Smithsonian CfA August 22 2008 Spitzer Reveals Stellar Family Tree NASA JPL Caltech Archived from the original on April 23 2009 Wikimedia Commons has media related to IC 1848 Wikimedia Commons has media related to W5 Retrieved from https en wikipedia org w index php title Westerhout 5 amp oldid 1089905800, wikipedia, wiki, book, books, library,
