Photographs from 1998 found in extrasolar planets
NEW YORK News April 3, according to foreign media reports, astronomers have recently re-examine the Hubble telescope the past 15 years shooting a large number of images and data files, and from the discovery of a previously overlooked new extrasolar planets.
HR8799 To further explore the surrounding stars in a star running more planets, astronomers have carefully studied the Hubble telescope in 15 years a large number of images collected by data files. Astronomers using a shading method, the stars have been observed to mask the bright light, so that may be found running around some of the star exoplanet light of the weak. It is through this method, astronomers finally taken in 1998 found an image of this extrasolar planets. This technology can be applied from Hubble telescope is similar to the more than 200 data sets can also be used by ground-based telescopes to obtain a large number of image data.
University of Toronto astronomer David -is one discoverer. David said that Now we have proved the feasibility of this approach. We can be applied to all observational studies and researches files, can be used to discover whether these images in a hidden planet. Hubble data files can best embody the scientific efficiency. It is easy to understand, and its structure is very suitable for information search scientists. According to the U.S. computer scientists Rensselaer Polytechnic Peter - Fox introduced so far Hubble data files have been used for more than 6 times. In fact, experimental or other scientific tools have had a mass of information, but most are hard-copy format or hard to read vs Reserve, but not after the general analysis.
Hubble data file for David's research work provides the meta-data and query functions. David explained that You can use different parameters, different goals and different wavelengths name query, query is easy. But more importantly, the data quality is very high, they are processed and calibrated, it is also a high-quality search results. Proven this technology in the next may be more widely used. David said launched in the near future," James - Webb "telescope, will certainly use this technology as the search for extrasolar planets, one of the strategy. We need a way to diminish the stars shine. James - Webb telescope will be launched in 2013, and dedicated to the search for extrasolar planets Kepler Space Telescope was previously launched in early March.
David further explained that the Department of extrasolar planets is a difficult observation of celestial bodies, which is located in our solar system around a star outside the run. Although, according to astronomers speculated that in reality there are many extrasolar planets to be discovered, but so far, astronomers identified only 300 extrasolar planets, which some of the planet's environment, with the formation of life on Earth's environment very similar. So far, astronomers are red through the space telescope to collect data to understand the atmosphere of extrasolar planets. However, as soon Spitzer infrared telescope will all run out of the refrigerant, which would severely limit the capacity of its observation. Astronomers said that from the Earth to an extrasolar planets to see the atmosphere, it is necessary for a large number of calories eruption, and the atmosphere necessary for the existence of no wind or very little wind. In addition, when this Department of extrasolar planets from the star behind it through, the cover star, the planet is a clear need to just quiet night, so that astronomers can accurately measure the thermal emission of its minor changes.
As of January 2009, scientists around the world in a total of 285 planetary systems discovered 335 extrasolar planets. In the near future, they seem to discover another planet Previously found to have the atmosphere of extrasolar planets are orbiting telescope Spitzer found. Need to add that, in the current discovery of extrasolar planets, most of them are Jupiter-like gaseous giant planets like. These planets are usually very close distance from the star, so the surface temperature is usually over in a few hundred degrees Celsius.
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