X-ray and Molecular Emission from the Nearest Region of Recent Star Formation

• DOI: 10.1126/science.277.5322.67
• Publication Date: 2002-07-27T09:37:56Z
• Authors: J. H. Kastner; B. Zuckerman; D. A. Weintraub; T. Forveille
• Keywords: Star (game theory); Circumstellar disk; Be star

The isolated, young, sunlike star TW Hya and four other young stars in its vicinity are strong x-ray sources. Their similar optical properties indicate that the make up a physical association is on order of 20 million years old lies between about 40 60 parsecs (between 130 200 light years) from Earth. itself displays circumstellar CO, HCN, CN, HCO + emission. These molecules probably orbit solar-system–sized disk viewed more or less face-on, whereas likely pole-on. Being at least three times closer to Earth than any well-studied region formation, Association serves as test-bed for study emission formation planetary systems around stars.