Sentences with phrase «faint galaxies at»

«The surprising aspect about the present discovery is that we have detected this Lyman - alpha line in an apparently faint galaxy at a redshift of 8.68, corresponding to a time when the universe should be full of absorbing hydrogen clouds,» Richard Ellis, a former faculty member of the California Institute of Technology, and co-author of a paper detailing the findings, published in the Astrophysical Journal Letters, said in a statement.

«The surprising aspect about the present discovery is that we have detected this Lyman - alpha line in an apparently faint galaxy at a redshift of 8.68, corresponding to a time when the Universe should be full of absorbing hydrogen clouds,» said co-author and Caltech astronomer Richard Ellis.

Not exact matches

«You build bigger, you go fainter, you go deeper, and you'll have a shot at a major discovery,» explains Pudritz, «So building these larger machines will no doubt allow us to study the birth of the first galaxies and even planet formation around distant stars.

«That we detected galaxies as faint as we did supports the idea that a lot of little galaxies reionized the early universe and that these galaxies may have played a bigger role in reionization than we thought,» says Rachael Livermore, an astronomer at the University of Texas at Austin.

They used images from the UltraVISTA survey, one of six projects using VISTA to survey the sky at near - infrared wavelengths, and made a census of faint galaxies when the age of the Universe was between just 0.75 and 2.1 billion years old.

But Hyron Spinrad, an astronomer at the University of California, Berkeley, is confident that Hu's faint source is a true early galaxy.

Any infant galaxy dating from the end of the Dark Ages is likely to be at an immense distance and therefore very faint.

It lies at a distance of 280,000 light years from the Sun, and such a remote galaxy with faint brightness has not been identified in previous surveys.

During the past decade astronomers looking deep into space with supersensitive electronic detectors have found millions of faint blue galaxies at distances exceeding 4 billion light - years.

The mysterious mass of the halo of at least one galaxy thus comes from relatively dim bulbs that were simply too faint for earlier generations of instruments to detect.

At the absolute magnitude of -0.8 in the optical waveband, it may well be the faintest satellite galaxy yet found.

Stars indicate quasars and bright (faint) galaxies at the same epoch are shown as circles (dots).

Although impressive, the number of galaxies found at this early epoch is not the team's only remarkable breakthrough, as Johan Richard from the Observatoire de Lyon, France, points out, «The faintest galaxies detected in these Hubble observations are fainter than any other yet uncovered in the deepest Hubble observations.»

They found 47 faint smudges: galaxies that could be at least as large as the Milky Way, but which contain so few stars that they glow as dimly as dwarf galaxies.

The survey has turned up several galaxies so small and faint that they challenge the definition of what counts as a galaxy at all.

We can see that not all of the monstrous galaxies show up in this picture, or at the least that some of them must be very faint.

Deep - field surveys are intended to look at faint galaxies; they point at small areas of the sky for a longer period of time, meaning the total volume of space being sampled is relatively small.

«We had expected we would see faint emissions right on top of the quasar, and instead we saw strong bright carbon emission from the galaxies at large separations from their background quasars,» said J. Xavier Prochaska, professor of astronomy and astrophysics at UC Santa Cruz and coauthor of the paper.

Using the precise VLA position, researchers used the Gemini North telescope in Hawaii to make a visible - light image that identified a faint dwarf galaxy at the location of the bursts.

The galaxies discovered in this study (circled) are magnified by factors of 3 - 100 and are fainter than any galaxies seen at this distance before.

The faint but enormous ionised clouds visible in hydrogen - alpha to the east of the CMa OB1 association hint at the structure of this enormous celestial river reaching into the outer galaxy.

Now, the inherent power of the Hubble Space Telescope, combined with this trick, has let scientists stare at an incredibly faint corner of the universe they discover a new galaxy.

The bright spiral disk may also be surrounded by a much fainter, outer ring of stars, possibly stripped from at least one, former satellite galaxy.

UGCA 86 (centre) and UGCA 92 (right) are much closer, they are two faint irregular dwarf galaxies located about seven million light years from us at the front of the group near IC 342.

My colleagues and I were using the Echellette Spectrograph and Imager (ESI) instrument, which looks at faint objects in the visible wavelengths, to study star clusters and small galaxies.

If the foreground galaxy has a supermassive black hole at the center, the central image becomes much fainter (Figure 5).

Dwingeloo 1 (right) is a barred spiral galaxy at the back of the group but it is so faint that it was not discovered until 1994.

Examples of science projects enabled by the data in the High - Latitude Survey include: mapping the formation of cosmic structure in the first billion years after the Big Bang via the detection and characterization of over 10,000 galaxies at z > 8; finding over 2,000 QSOs at z > 7; quantifying the distribution of dark matter on intermediate and large scales through lensing in clusters and in the field; identifying the most extreme star - forming galaxies and shock - dominated systems at 1 < z < 2; carrying out a complete census of star - forming galaxies and the faint end of the QSO luminosity function at z ~ 2, including their contribution to the ionizing radiation; and determining the kinematics of stellar streams in the Local Group through proper motions.

A new analysis of galaxy colors, however, indicates that the farthest objects in the deep fields must be extremely intense, unexpectedly bright knots of blue - white, hot newborn stars embedded in primordial proto - galaxies that are too faint to be seen even by Hubble's far vision — as if only the lights on a distant Christmas tree were seen and so one must infer the presence of the whole tree (more discussion at: STScI; and Lanzetta et al, 2002).