Astronomers detect gas streams linked to new planets
Posted: Thu, Jan 3, 2013, 7:46 AM ET (1246 GMT)
Radio astronomers announced Wednesday that they have detected for the first time streams of gas flowing into a star created by the formation of new planets. Astronomers detected the gas streams around HD 142527, a star 450 light-years from the Earth, in observations by the ALMA radio telescope array in Chile. The streams of gas come are drawn from an outer protoplanetary disk surrounding the star by gas giant planets that formed in a gap between that outer disk and the inner one. Some of the material in the streams are captured by the new planets, but much of it continues to flow inward to the inner disk, replenishing it as the star itself grows. The development of these gas streams had been predicted by models of planetary formation, but had not been directly observed before now. The findings appear in the latest issue of the journal Nature.
Radio astronomers announced Wednesday that they have detected for the first time streams of gas flowing into a star created by the formation of new planets. Astronomers detected the gas streams around HD 142527, a star 450 light-years from the Earth, in observations by the ALMA radio telescope array in Chile. The streams of gas come are drawn from an outer protoplanetary disk surrounding the star by gas giant planets that formed in a gap between that outer disk and the inner one. Some of the material in the streams are captured by the new planets, but much of it continues to flow inward to the inner disk, replenishing it as the star itself grows. The development of these gas streams had been predicted by models of planetary formation, but had not been directly observed before now. The findings appear in the latest issue of the journal Nature.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
|
|
news links
|
|
Wednesday, July 22
MDA Space UK Selected by OHB to Provide Advanced Lunar Landing Sensors for European Space Agency’s Argonaut Mission
MDA — 4:27 am ET (0827 GMT) ESA seeks novel concepts for a fast asteroid reconnaissance mission
ESA — 4:27 am ET (0827 GMT) Poland joins mission to free Europe from Starlink dependence
TVP World — 4:26 am ET (0826 GMT) Western Range supports its 50th Launch of the year
US Space Force — 4:24 am ET (0824 GMT) SpaceX Set to Unlock $116 Billion in Shares After IPO Restrictions Lift
Bloomberg News — 4:22 am ET (0822 GMT) |
