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The RCW 7 nebula, featured in this Hubble Space Telescope image, illustrates the transformation of a molecular cloud into an H II region, marked by the emergence of massive protostars. These stars emit ultraviolet light and stellar winds that shape the nebula, with Hubble capturing this process in near-infrared light, revealing the lifecycle of stars and their impact on the surrounding cloud. Credit: ESA/Hubble & NASA, J.
Hubble’s image of RCW 7 reveals massive protostars in the Puppis constellation transforming a molecular cloud into a glowing H II region, showcasing the birth and evolution of stars.of leftover gas and dust. In the case of RCW 7, the protostars forming here are particularly massive, giving off strongly ionizing radiation and fierce stellar winds that have transformed it into what is known as an H II region., H II is hydrogen that has lost its electron.
Here Hubble is studying a particular massive protostellar binary named IRAS 07299-1651, still in its glowing cocoon of gas in the curling clouds towards the top of the nebula. To expose this star and its siblings, this image was captured using the Wide Field Camera 3 in near-infrared light.which can pass through much of the gas and dust around them and be seen by Hubble. Many of the other, larger-looking stars in this image are not part of the nebula, but sit between it and our Solar System.
Reference: “Dynamics of a massive binary at birth” by Yichen Zhang, Jonathan C. Tan, Kei E. I. Tanaka, James M. De Buizer, Mengyao Liu, Maria T. Beltrán, Kaitlin Kratter, Diego Mardones and Guido Garay, 18 March 2019,SciTechDaily: Home of the best science and technology news since 1998. Keep up with the latest scitech news via email or social media.
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