气候变化领域集成服务门户(CCPortal): X-ray and molecular emission from the nearest region of recent star formation

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DOI	10.1126/science.277.5322.67
	X-ray and molecular emission from the nearest region of recent star formation
	Kastner J.H.; Zuckerman B.; Weintraub D.A.; Forveille T.
发表日期	1997
ISSN	0036-8075
起始页码	67
结束页码	71
卷号	277 期号:5322
英文摘要	The isolated, young, sunlike star TW Hya and four other young stars in its vicinity are strong x-ray sources. Their similar x-ray and optical properties indicate that the stars make up a physical association that is on the order of 20 million years old and that lies between about 40 and 60 parsecs (between about 130 and 200 light years) from Earth. TW Hya itself displays circumstellar CO, HCN, CN, and HCO+ emission. These molecules probably orbit the star in a solar-system-sized disk viewed more or less face-on, whereas the star is likely viewed pole-on. Being at least three times closer to Earth than any well-studied region of star formation, the TW Hya Association serves as a test-bed for the study of x-ray emission from young stars and the formation of planetary systems around sunlike stars.
英文关键词	carbon monoxide; cyanide; hydrogen cyanide; article; astronomy; infrared radiation; priority journal; X ray; Astronomy; Carbon Monoxide; Cyanides; Evolution, Planetary; Extraterrestrial Environment; Formates; Hydrogen Cyanide; Spectrometry, X-Ray Emission; Spectrum Analysis; X-Rays
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244229
作者单位	Center for Space Research, Massachusetts Inst. of Technology, Building 37-667a, 70 Vassar Street, Cambridge, MA 02139, United States; Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, United States; Department of Physics and Astronomy, Vanderbilt University, Station B, Post Office Box 1807, Nashville, TN 37235, United States; Groupe d'Astrophysique, Observatoire de Grenoble, 414 rue de la Piscine, F-38041 Grenoble Cedex, France
推荐引用方式 GB/T 7714	Kastner J.H.,Zuckerman B.,Weintraub D.A.,et al. X-ray and molecular emission from the nearest region of recent star formation[J],1997,277(5322).
APA	Kastner J.H.,Zuckerman B.,Weintraub D.A.,&Forveille T..(1997).X-ray and molecular emission from the nearest region of recent star formation.Science,277(5322).
MLA	Kastner J.H.,et al."X-ray and molecular emission from the nearest region of recent star formation".Science 277.5322(1997).