NGC 602 - the star confetti in the Wing The Small Magellanic Cloud (SMC) is one of the closest galaxies relative to the Milky Way. Even if it is small or it is called dwarf galaxy, it is so clear that you can observe with the naked eye from the southern hemisphere near the equator the Earth. Many medieval navigators, including the Ferdinand Magellan, from which the name took its name from the SMC and its cousin, the Large Magellanic Cloud (LMC) SMC used as an aid in finding a way through the endless ocean water. Modern astronomy is also interested in studying the SMC and LMC with a number of very different reasons. Because the Small Magellanic Cloud is located very close relative to our galaxy, yet the brightness is high, it allows astronomers to study the phenomena and processes that are difficult to study in distant galaxies. New data from the Chandra X-ray Observatory Cosmic obtained from the Small Magellanic Cloud studies allowed the detection of X-ray emission from young stars with masses similar to our Sun, but beyond the Milky Way. These studies of low-mass stars led by Chandra SMC refers to a region known as the Wings. Photography Wings Small Magellanic Cloud was filed with the optical data Hubble Space Telescope, which are presented in the color red, green and blue, shades of purple present data obtained by the Cosmic X-ray Observatory Chandra, while the infrared spectrum shows red color obtained by the Space Telescope Spitzer. Astronomers call all the elements heavier than hydrogen and helium - that is, having more than two protons in the nucleus - metallic. It turns out that the region has a smaller leaf metal content compared to most of the areas studied the Milky Way. This region contains a relatively lower content of gas, dust and stars compared to our parent galaxy. All the facts are that the wing is an ideal location to study the evolution of stars and the mechanics of interstellar matter located between the stars. Conditions in dwarf galaxies, such as irregular SMC, following largely the ones that were most likely in the early Universe. The greater part of the star formation is located near the top of the wings and is located in a small area known as NGC 602, which includes at least three clusters of stars. One of these regions designated as NGC 602a has a similar mass, size, age and construction of the clouds of gas and interstellar matter how famous, the Great Nebula in Orion. A team of astronomers studied the NGC 602a young stars with a low content of metallic elements, whose age reaches only a few million years, and their properties are different from those outside the NGC 602a. With data from Chandra, astronomers have discovered X-ray emission through by the two regions of the NGC 602a most densely occupied by a population of young stars. This long cloud of X-ray emission probably originates from a young population, which had been previously selected for observations in the infrared and visible radiation by the Spitzer Space Telescope and the Hubble Space Telescope. Emission words can not come from hot gas exhaled by massive stars, because the low content of metallic elements in stars belonging to NGC 602a suggests that these stars emit weak stellar wind. None of the detected X-rays from the most massive stars in NGC 602a supports the conclusion that the X-ray emission is an indicator of the strength of winds from massive stars. There appears to be no emission coming from a low-mass star, but superimposed on each other issue several thousands of stars becomes so clear that you can watch her. Results of observations of the Cosmic X-ray Observatory Chandra suggest that young, poor metallic elements, the stars of NGC 602a produce X-rays like stars have a much higher content of metal elements, which were discovered in the Trapezium Cluster, which is located in the center of the Orion Nebula. Astronomers speculate that if the X-ray emission properties of young stars are similar in different environments, other their related properties may also be similar, in that the process of formation and evolution of protoplanetary disks, which then formed the planets. Traces of X-ray emission and magnetic activity of young stars is related to the processes and the effectiveness of the internal dynamo generates them. Magnetic dynamo generates the magnetic field of a star in the process, which is influenced by the speed of rotation and convection of hot gas rising from and falling in the direction of, the center of the star. Synthesis of data on X-ray, optical and infrared radiation, allowed to show our first time our eyes objects that are in the youngest evolutionary stage star. These are the so-called young stellar objects, whose age range of several thousands of years. They are hidden from our sight in the columns of gas and dust from which will form up at the stars, as in the famous Pillars of Creation discovered in the M16 Eagle Nebula otherwise known as (NGC 6611).
Posted on: Mon, 01 Sep 2014 18:47:01 +0000
Trending Topics
Recently Viewed Topics
© 2015