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Thus a planet was born

© Afrim Constantin –

Still surprised by the planetary system HR 8799?  A study, published in Science, reconstructs the stages of formation of one of the four worlds that populate it. All thanks to high-resolution spectral analysis of its atmosphere. There is an unusual ferment around the star HR 8799. Just recently, researchers became aware of an unusual chemical composition

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Hot ice in UNIVERSE

© Afrim Constantin –

Exactly the opposite of what common sense might suggest the best chances of find Earth-like planets with life and maybe there would be peering around the cooler stars. These are the results of a study published on Astrobiology. Notice to hunters of extra solar planets: if you are looking to find new worlds where life

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The smallest exoplanet ever photographed

© Afrim Constantin –

Among the few extrasolar planets directly observed, researchers immortalized with the help of the Japanese Subaru telescope a planet which has less mass, perhaps as little as three times that the mass of Jupiter. GJ 504 b, this is its name, orbits at 60 light years away around a star similar to the Sun. Source:

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Identikit of planetary systems

© Afrim Constantin –

The first two results had been published on A & A of the project GAPS – Global Architecture of Planetary Systems. Highly accurate measurements of the spectrometer HARPS -N, installed at the Galileo National Telescope, are helping astrophysicists to define with greater precision, important features of the hundreds, perhaps thousands, of planetary systems in our

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Poised between stars and planets

© Afrim Constantin –

Two bodies difficult to categorize have been discovered: solitary giant planets or brown dwarfs extremely low mass? Both formed very recent – 12 million years ago, the other just 2 million years ago – and they are respectively 80 and 500 light-years from us. Studies out of ApJ and A & A. Source: www.nasa.gov One

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Nothing can be born from diamonds

© Afrim Constantin –

The diamonds, or rather the carbon which is the constituent, are not the best friends of life. A theoretical model, developed by an international team led by researchers at NASA, indicates that an excess of carbon in stellar systems in formation sequesters oxygen which could give rise to water. To make a habitable planet, in a

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What is special with HD 70642 stars and HD 101364 (HIP 56948)?

© Afrim Constantin –

Solar-type star, like twin of the Sun, have three definitions given to stars that have similarities to the Sun, according to photometric and physical characteristics such as spectral class, mass, age, cromospheric activity, temperature, metallicity, Equatorial rotation, abundance of lithium, kinematics and of considerable importance is  whether or not they are individual and non-binary stars.

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The older twin of the Sun

© Afrim Constantin –

An international team led by Brazilian astronomers used the VLT (Very Large Telescope) of the ESO to identify and study the older twin of the Sun so far known.  To 250 light-years from Earth, the star HIP 102152 is closer to the Sun than any other solar twin – except that has about four billion

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ALMA Telescope’s Views of Herbig-Haro Object HH 46/47

© Afrim Constantin –

Some astronomers using ALMA (Atacama Large Millimeter Array) have got a vivid image to close the material flowing from a newborn star.  Observing the luminescence produced by carbon monoxide molecules in an object known as Herbig-Haro 46/47, they have discovered that the jets from these products are even more energetic than previously thought so far. 

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