Dear Friends,

wish you Happy Gujarat / Maharashtra Day ,
Our Sun has big Naked eye visible SUN spot @ the centre of our SUN but beware -
never look directly to the sun or BINO/TELEscope with out proper filters.
Dangerous to see direct or TELE/bino without filters and might damage the Ratina
of the Eye.

Planet 'seen' around distant sun

The planet (left) is about five times the size of our Jupiter
European and American scientists say they have photographed a planet
outside the Solar System for the first time.
The European Southern Observatory group said the red image is the first
direct shot of a planet around another star.

The planet, known as 2M1207b, is about five times the size of Jupiter and
is orbiting at a distance nearly twice as far as Neptune is from our Sun.

The parent star and planet are more than 200 light-years away near the
southern constellation of Hydra.

There has been a lot of competition among astronomers to secure the first
direct picture of an exoplanet.

When the ESO group first released the picture last September there was
doubt over whether the star and planet were gravitationally bound.

The new images essentially confirm our 2004 finding

Benjamin Zuckerman, UCLA

But follow-up images taken at the Very Large Telescope facility in Chile
show the two objects are moving together.

"Our new images are quite convincing," said Gael Chauvin, an Eso
astronomer.

"This really is a planet - the first planet that has ever been imaged
outside of our Solar System," he added.

Tough task

It is extremely difficult for current technology to detect exoplanets -
let alone get a clear shot of one.

All of the 130 or so exoplanets so far discovered have been found using
indirect methods - looking for changes in the properties of stars (their
brightness or way they move) that can be explained only by the presence of a
planet.

Now we have a direct observation, the Eso team says.


An artist's impression of the planet around the brown dwarf

The star has the uninspiring catalogue number 2M1207A. It is a brown
dwarf, or "failed star" - an object whose mass of hydrogen and helium has failed
to trigger the nuclear reactions that would make it shine brightly like normal
stars.

At the time of 2M1207b's discovery, it was impossible to prove that the
red speck caught in the original images was not a background object, such as an
unusual galaxy or a peculiar cool star.

The new observations show with high confidence that the two objects are
moving together and hence are gravitationally bound.

"The two objects - the giant planet and the young brown dwarf - are moving
together; we have observed them for a year, and the new images essentially
confirm our 2004 finding," said Benjamin Zuckerman, a University of
California-Los Angeles (UCLA) professor of physics and astronomy.

Anne-Marie Lagrange, another member of the team from the Grenoble
Observatory in France, looks towards the future: "Our discovery represents a
first step towards one of the most important holy grails of modern astrophysics:
to characterise the physical structure and chemical composition of giant and,
eventually, terrestrial-like planets."


The original and follow-up observations were made at the Very Large
Telescope facility
Dr Chauvin added: "Given the rather unusual properties of the 2M1207
system, the giant planet most probably did not form like the planets in our
Solar System."

"Instead it must have formed the same way our Sun formed, by gravitational
collapse of a cloud of gas and dust."

As a consequence, there are bound to be some scientists who will still
question if 2M1207b really is a planet.

Lynne Hillenbrand, an assistant professor of astronomy at the California
Institute of Technology, told the Associated Press news agency: "The claim of an
object being a planet is subject to one's definition of planet, and there are
different camps on what that definition is."

What everybody wants is a direct image of a rocky planet like Earth
circling another star. But this will not come until we get the next generation
of super-telescopes capable of resolving such small, faint objects.

The latest research has been accepted in Astronomy and Astrophysics, a
premier journal in astronomy.



With Compliments from: Dr. BHUDIA : Science Group Of INDIA.
http://uk.groups.yahoo.com/group/venustransit_2004/
President:"Kutch Science Foundation".
Founder :"Kutch Amateurs Astronomers Club - Bhuj - Kutch".
Life Member:"kutch Itihaas Parishad".
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