Sketch the scene and note
the very faint star that changes position nightly.
«It has a very large field of view to quickly map the sky and great sensitivity, enabling us to look at
very faint stars.
One is that it is in the form of brown dwarfs,
very faint stars made of the same kind of baryonic material as our Sun.
«You can see bulges in distant galaxies, but you can not resolve
the very faint stars, such as the white dwarfs.
Not exact matches
This is an extremely challenging task as such planets are both
very close to their parent
stars in the sky and also
very much
fainter.
But even at this distance, it is
very challenging to obtain good images of the
faint reflected light from discs, since they are outshone by the dazzling light of their parent
stars.
However, the predicted «intracluster» glow of
stars is
very faint and was therefore a challenge to identify.
We usually use it to look for
very faint planets in the close vicinity of nearby
stars, by painstakingly observing them one by one,» said Pueyo.
The
faint spot close to the brighter brown dwarf
star may be the
very first real image of an exoplanet.
Based on the infrared signature of the
faint light, they found to their surprise that the glow seems to be created by second - and third - generation
stars —
stars created out of gas and dust that has been cooked in the hearts of
very large, short - lived
stars.
«It's
very difficult to see these
faint moving objects in front of thousands and thousands of background
stars,» Parker says.
Astronomers studying distant objects call these
stars «foreground
stars» and they are often not
very happy about them, as their bright light is contaminating the
faint light from the more distant and interesting objects they actually want to study.
As for the distant future, astronomers dream of an infrared counterpart to Gaia, which would be able to peer through the Milky Way's dust cloud into its
very center, and also would excel at detecting and measuring
faint red and brown dwarf
stars in the solar neighborhood.
The fact that they found none heavier than 18 times the Sun's mass suggests these heavier
stars may not produce supernovae, or that they only produce
very faint ones that are too dim to detect, the team says.
Extreme adaptive optics also allows much
fainter objects to be seen
very close to a bright
star.
The earliest oxygen - deficient galaxies are so far away and so
faint as to be nearly undetectable, but relatively close - by
star - forming dwarf galaxies, with
very little oxygen like early galaxies, may be easier to detect and offer the same clues.
«Though these galaxies are
very faint, their increased numbers means that they account for the majority of
star formation during this epoch,» said team member Anahita Alavi, a Ph.D. graduate student in Siana's lab, and the first author of the research paper.
But Kepler has difficulty identifying smaller planets because the
stars that it examines tend to be extremely
faint, which makes it
very difficult to confirm discoveries with ground - based telescopes.
The light from 51 Eridani b is
very faint; its nearest
star is 3 million times brighter.
Astronomers are stuck with such indirect methods of detection because current telescope technology struggles to image
very distant and
faint objects - especially when they orbit close to the glare of a
star.
«We were able to separate the light of the
faint planet from the light of the much brighter
star and to see that they were both growing and glowing in this
very distinct shade of red.»
This extremely
faint star system of two,
very small and dim, red dwarf
stars is located only about 14.2 light - years away.
The same curve also showed that there were
very few
faint white
stars.
But reporters sometimes overlook the fact that all this means is that Kepler will measure a
very faint dip in starlight when the planet passes in front of its parent
star.
«Through new techniques we have been able to measure the movements of the
stars in the
very distant,
very faint, stellar stream in the Umbrella,» Foster said.
We are now seeing planets in the blackness around other
stars,
very much in the same way he discovered the
faint moon companions around Jupiter.
NASA's search for planets outside of our solar system has mostly involved
very distant,
faint stars.
What I'm trying to find are
very faint objects that reflect and re-emit the light from a host
star nearby.
NGC 188, a
very old open cluster (estimated 5 billion years old), showed only 10 to 20
faint stars.
Snellan said this will be
very difficult, because the planet is
very faint compared to its parent
star.
The cluster galaxies are typically
very faint, about 10 million times
fainter than the
faintest stars visible to the naked eye on a dark night.
Not only are these planets intrinsically
faint, they also orbit
very bright host
stars.
Messier included the object in his catalogue with the following description: «
Very faint nebula, discovered in Sagittarius; its center is brilliant & it contains no
star, seen with an achromatic telescope of 3.5 feet [FL].