A glimpse: Inside the cradle of stars

2022-06-06 0 By

On Monday, as the ancient sense today | Tuesday, shepherd’s column on Wednesday, romantic same day | explorations | Thursday, observation guide on Friday, Saturday, at one’s star words | Sunday, the original space exploration: Samantha Mathewson translation: Huang Jing correction:Mou Xinxiang zhu Chenyu Choreography: Chen Lishuai Background: Li Ziqi Dong Tengchen Hu Yongweihttps://www.space.com/hubble-telescope-chamaeleon-stellar-nursery-photo the Hubble telescope Yan ting when cloud complex captures the formation of new stars in the dark, dusty, molecular cloud and striking reflection nebula.These nebulae glow bright blue from nearby baby stars and interstellar gas called Herbig-Haro objects.NASA’s Hubble Space Telescope has captured a stunning new view: the bright blue glow of young stars illuminates a cradle of newborn stars.The giant stellar cradle is called the Chamaeleon Cloud Complex.It is 65 light-years wide and occupies most of the chameleon sky.It can be seen from the southern hemisphere.Located 522 light-years from Earth, the complex is one of the closest regions of active star formation to us.Chameleon is a small, dim constellation near the southern pole, between carina and The Chameleon.Source: Stellariumu mobileNASA “This 315 megapixel composite image is a composite of 23 observations from Hubble’s Advanced Camera for Surveys.The gaps between these observations were filled in with 20 images taken by the Second Generation Wide Field and Planetary Camera (WFPC2).The remaining gap was filled by ESO’s Visible and Infrared Survey Telescope Infrared Camera (VISTA VIRCAM).”[1] Even so, only one of the three main parts of this vast region, known as Chamaeleon 1 (Cha 1), has been captured.New images released by NASA on January 31 show dark, dusty molecular clouds that form new stars, as well as striking reflection nebulae.These nebulae glow bright blue in the light of nearby newborn stars.Hubble also photographed clumps and arcs of interstellar gas called Herbig-Arrow objects.The gas is ejected by a collision between a protostar and a nebula of gas and dust.Jets from the infant star, in turn, power the gas, creating the radiating Herbig-Arrow object seen in the new image, NASA said in the report.”At the bottom of the image lies a protostar in the center of the white-orange nebula,” NASA said.Its bright white jets of hot gas ejected from the protostar’s poles, forming the Herbigger-Arrow object HH 909A.”As for the cross shape next to the star in the image, NASA explains: “This happens when light from a very bright point-like source, such as a star, diffracts on the cross-shaped bracket that holds Hubble’s secondary mirror:The light waves go around the edges of these pillars and converge on the other side, forming the bright, sharp crosses around the bright stars we see.”[2]NASA observed and collected data on Cha 1 during its search for extremely faint and low-mass “failed” stars called brown dwarfs.Brown dwarfs have more mass than most planets, but not enough to sustain them fusing continuously like stars.With Hubble about to retire, I wonder if its successor, the Webb Telescope, will shed more light on the mysteries of this stellar cradle.Note: [1] [2] from https://www.nasa.gov/image-feature/goddard/2022/hubble-examines-a-star-forming-chamaeleon editor: Zhou Xueyun shepherd’s new media editorial office