Content of its lithium element is congener spherical 3000 times this one discovery changed the mankind to be opposite the acknowledge of element of the lithium in celestial body
The graph discovers the sketch map of rich lithium giant star for Guo Shoujing binoculars. Tremendous bolide is the sketch map with new sidereal discovery in the graph, it is discovered from inside the astral field of white circle area. Left what next horn reveal is the spectrum that this star films by LAMOST place. Setting is this star the true and galactic photograph of around area.
Report from our correspondent (reporter Lei Jia) join the state with 7 years formally Guo Shoujing of big scientific unit is telescopic (LAMOST) have major discovery again. International periodical " natural - astronomy " online yesterday this one discovery that published our country scientist: The group that heads with researcher of observatory of country of Chinese Academy of Sciences relies on LAMOST to discover a peculiar celestial bodies, content of its lithium element is congener spherical about 3000 times, it is current the mankind is foregone the star with lithium element highest abundance.
The crucial element that lithium element is join universe big burst, interstellar material and star, the evolution in the universe and star is the main task of astronomy domain all the time. The giant star that contains a lot oflithium element is very rare, but announcing important sense is had however on lithium element origin and evolution. Regretful is, astronomer of 30 one's remaining years discovered thimbleful only in the past this kind of celestial bodies. Begin as what the completion of LAMOST and day of make one's rounds plan, ability of observation of chart of starlight of its magnanimity constant sends force gradually in astronomy basic research.
The rich lithium star of this new discovery comes from the anguine husband near galaxy center direction, be located in a galaxy dish face with north, distance earth makes an appointment with 4500 light-year. The person such as Zhao Gang of Yan Hongliang of national observatory doctor, researcher and Shi Jianrong is in obtain this one discovery while, with science of Chinese nuclear energy the scientist of Normal University of academy, Beijing cooperates, peculiar to this star began thorough research, a kind of when discover this sidereal lithium element comes from sidereal interior probably special material exchanges a process. The atomicity with the high resolution spectrum of binoculars of the person that they still combine American automatic planet to search for and newest academy of science of Chinese nuclear energy is occupied, adopt the change that its interior experiences imitate recurrence, thereby sidereal to this lithium element abundance gives out to explain reasonably.
This one discovery changed the mankind to be opposite the acknowledge of element of the lithium in celestial body, raised limit of observation of content of the lithium on international one times, be in at the same time theoretic the new point of view that be synthesized to lithium element and had sidereal evolution theory to put forward develop a school of one's own. Dr. Yan Hongliang tells north blueness signs up for a reporter, the new point of view that they offer explained how this star forms lithium through oneself. The tradition before this thinks the acquisition of sidereal lithium element is more theoretically through gobbling up other star, but Ming Li of justifiable also argumentation can form Yu Hengxing interior, but because lithium element is not high temperature resistant, although was formed,be used up very quickly also so. "We assumed convection of a kind of asymmetry, the material that is star from rate is slow when moving inside extroversion, from the motion outside introversion when fast. The convection with this kind of different speed makes can be gone to by rapid belt from interior with the material that will form lithium exterior (because giant star interior often has from outside to inside again from inside the convection outside arriving) , in temperature inferior area changes Cheng Li, avoid to be destroyed by high temperature thereby. Avoid to be destroyed by high temperature thereby..
Observatory of country of Chinese Academy of Sciences announced at the same time yesterday, LAMOST finishs observation of day of make one's rounds of first phase spectrum satisfactorily already, release spectrum in all 9.01 million, among them high quality is spectral 7.77 million, decided 5.34 million groups of sidereal and spectral parameter. Its achievement includes: The data of radius of two refresh galaxy, double what the radius that limits this year already achieved the past to know; Undertake new estimation to the dark material density near the sun; Discover content of more than 10000 metals under the sun 1% and even extremely one of deficient metal star, compose built the biggest cosmic fossil sample book on the world; In close ten million 5 are found to exceed high speed star in spectrum, to study this kind can " escape " the star of the galaxy provides important example, etc.
The picture comes from " Chinese country astronomy "
