Sentences with phrase «nearby galaxies by»

Not exact matches

The supernova, known as SN1987A, was first seen by observers in the Southern Hemisphere in 1987 when a giant star suddenly exploded at the edge of a nearby dwarf galaxy called the Large Magellanic Cloud.

A Giant Galactic Ghost Intrigued by faint blurs on old photographic plates of the Virgo galaxy cluster, a nearby region teeming with galaxies, Oregon's Bothun and colleagues wondered if the apparitions might be smallish galaxies with «low surface brightness» — astronomer - speak for emitting less light per unit area than typical galaxies.

In a recent paper published in The Astrophysical Journal, Boorman (and colleagues from the NuSTAR active galaxies science team) described how data from NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) has been used to study the intrinsic behaviour of a «hidden» supermassive black hole in a galaxy nearby to our own — IC 3639 — some 175 million light years from Earth, relatively close by in cosmic terms.

To begin with, they orbited close to the plane of the ecliptic in the same direction as the planets, but their orbits were deformed by the galaxy's tidal force and by interactions with nearby stars, gradually becoming more inclined and forming a more or less spherical reservoir,» Morais said.

If two neutron stars were to merge in a nearby galaxy, the resulting wave would squish and stretch the space - time near Earth by about a millionth of the diameter of an atom as it passed through us.

Small galaxies» visible gas may have been scoured away by million - degree coronas of nearby big galaxies

By studying this particular cluster — and others nearby — astronomers can explore the properties of the spiral disc of our galaxy, the Milky Way.

Guyon adds that the system will help astronomers to study the skies more efficiently, by bringing large objects, such as nearby galaxies, into focus all at once, and by allowing more distant objects to be studied in a single snapshot.

Astronomers recently gauged the age of the Fermi bubbles less directly, by arguing that whatever produced them also irradiated a long strand of gas shed by two nearby galaxies.

But when Abazajian and his student Ryan Keeley analysed data from nearby dwarf galaxies released by the Fermi telescope this year, they found no such signal there.

Most such explosions are thought to have an identical intrinsic brightness, which Sandage and his colleagues have found by measuring the distances of two nearby galaxies that have spawned type Ia supernovae.

Astronomers working with the Sloan Digital Sky Survey have used a 2.5 - meter telescope at the Apache Point Observatory in Sunspot, New Mexico, to map the location of more than 930,000 nearby galaxies, determining the distance to each by how much the expansion of the universe has stretched, or «redshifted,» the wavelength of the galaxy's light.

By comparison, the study by Tremblay and his colleagues looked at only elliptical galaxies in the nearby universe with fireworks at their centerBy comparison, the study by Tremblay and his colleagues looked at only elliptical galaxies in the nearby universe with fireworks at their centerby Tremblay and his colleagues looked at only elliptical galaxies in the nearby universe with fireworks at their centers.

It could be that NGC 1052 - DF2 was once a placid mass of gas and has been recently perturbed by another unseen galaxy nearby, sparking star formation.

Astronomer Andrew Fox of the Space Telescope Science Institute in Baltimore, Maryland, and his colleagues made the discovery while studying a stream of gas shed by two nearby galaxies, the Large and Small Magellanic Clouds, which orbit the Milky Way.

We can tell things like which galaxy the waves come from, if there are other stars nearby, and whether or not the gravitational waves are followed by visible radiation after a few hours or days.»

Of sixteen sources identified by the researchers, most were confirmed as single, nearby galaxies that were already known.

These rare systems — only a few tens were known until recently — were thought to have had their outer coats of stars ripped away by the gravity of other, larger galaxies as they passed nearby, a theory supported by the fact that they were usually found in the centers of large clusters of galaxies.

A speeding star may have been flung away by a black hole lurking unnoticed in a nearby galaxy, new research suggests.

Suspecting that Andromeda, a nearby giant spiral galaxy similar to the Milky Way, might sport a similar stream, researchers led by Rodrigo Ibata of the Strasbourg Observatory in France used the Isaac Newton Telescope at La Palma, Canary Islands, to find out.

The existence of such active galaxies in the nearby universe was first noted by the American astronomer Carl Seyfert more than 70 years ago.

According to Gould and Villumsen, the gravitational lensing induced by these nearby structures should show up in a large survey of galaxies being conducted by James Gunn at Princeton University in New Jersey and his colleagues.

First, a team led by astronomer Jon Miller of the Harvard - Smithsonian Center for Astrophysics (CfA) in Cambridge, Massachusetts, used the European Space Agency's XMM - Newton satellite to study two bright x-ray sources in the nearby galaxy NGC 1313.

The MASSIVE Survey was funded in 2014 by the National Science Foundation to weigh the stars, dark matter and central black holes of the 100 most massive, nearby galaxies: those larger than 300 billion solar masses and within 350 million light - years of Earth, a region that contains millions of galaxies.

We think it was formed by cannibalizing nearby smaller galaxies.»

Until recently, though, Cepheids had been spotted only in relatively nearby galaxies that are influenced by the gravitational pull of our Milky Way.

But according to the steady state theory, quasars are being expelled by galaxies, so in these cases the high redshifts indicate the rapid motion of objects that could be relatively nearby.

A newfound star in a nearby galaxy appears to have cheated death by blowing up at least twice as a supernova.

Some ellipticals are present in the central part of the cluster including a giant elliptical at the center (M87) that has become so large by gobbling up nearby galaxies that were attracted by its enormous gravity.

MAUNA KEA, Hawaii — A team of scientists, led by Dr. Sebastian Hoenig from the University of Southampton, has accurately measured the distance to the nearby NGC4151 galaxy, using the W. M.... Read more»

Figure 1 shows a nearby galaxy surrounded by globular clusters.

This rare opportunity to observe a dwarf galaxy as its gas is removed by the effects of a nearby giant galaxy will allow scientists to learn more about how this process happens.

By measuring about 2,400 Cepheid stars in 19 nearby galaxies and comparing the apparent brightness of both types of stars, they accurately determined the true brightness of the Type Ia supernovae.

«This is not the first time astronomers have found a galaxy with nearby gas, revealed by a quasar.

By comparing the results of those simulations with observations of heavy elements in nearby galaxies, the researchers hope to determine whether primordial black holes are indeed responsible for Earth's gold, platinum and uranium.

This estimate takes into account the fact that the ultraviolet irradiance of the Sun was considerably larger in the distant past, as confirmed by astronomical measurements of younger Sun - like stars in the nearby galaxy.

Scientists believe that gas and dust may have been stripped by nearby galaxies or from an early burst of star formation that used up all the gas.

Taking into account that the relatively nearby (in the sky) galaxy M98 is approaching us at 125 km / sec, and thus moving at about the same peculiar velocity but, by chance, toward us, one may speculate that these two galaxies might have been involved in an encounter, but this is currently not much more than wild speculation.

Nearby galaxies (e.g., the Andromeda Galaxy) are detected by the emission from constituent X-ray binaries.

A nearby companion galaxy, NGC 5195, off the edge of this image, gravitational pull is triggering star formation in the main galaxy, as seen in brilliant detail by numerous, luminous clusters of young and energetic stars.

Astronomers looked at it and realized she had spotted something they had never seen before: a gas cloud as big as our solar system, illuminated by energy from a nearby galaxy's black hole [source: Plait].

This plot shows over one and a half million of the brightest stars and galaxies in the nearby universe detected by the Two Micron All Sky Survey (2MASS) in infrared light.

This view, captured by the NASA / ESA Hubble Space Telescope, shows a nearby spiral galaxy known as NGC 1433.

An international group of scientists led by German Hans - Walter Rix from the Max - Planck - Institut fur Astronomie in Heidelberg is studying 24 nearby disk galaxies, similar to our own Milky Way, using the NASA / ESA Hubble Space Telescope.

(iii) Far - infrared spectroscopy of dust and ice features will address uncertainties in the mass and composition of dust in galaxies, and the contributions of supernovae to the interstellar dust budget will be quantified by photometry and monitoring of supernova remnants in nearby galaxies.

Abstract: We report on mid - and far - IR Spitzer observations of 7 nearby dusty elliptical galaxies by using the Multiband Imaging Photometer (MIPS) and Infrared Spectrograph (IRS).

In order to study the origin and the propertie... ▽ More We report on mid - and far - IR Spitzer observations of 7 nearby dusty elliptical galaxies by using the Multiband Imaging Photometer (MIPS) and Infrared Spectrograph (IRS).

By comparing the observed brightness of both types of stars in those nearby galaxies, the astronomers could then accurately measure their true brightness and therefore calculate distances to roughly 300 Type Ia supernovae in far - flung galaxies.

In order to hack into, what else, a giant battleship, the two young recruits are first dispatched to a nearby planet with a lavish casino run by rich arms dealers — who, it turns out, profit from supplying weapons to both sides of the galaxy's seemingly eternal good - versus - evil conflict.

Re 51 Tom P — watched the video; and I agree that the sun does wobble around the center of mass of the solar system; the center of mass itself is not tending to wobble around the sun because conservation of momentum applies to the solar system as a whole (except of course for the forces applied to it by nearby stars, the rest of the galaxy, etc, but those are not varying so fast and so the center of mass should generally be moving along rather smoothly on the same timescale as planetary motions).