Sentences with phrase «galactic regions»

This region contains relatively young to intermediate - aged stars that within around five billion years old with relatively higher average metallicity than other galactic regions located outside of the galactic core, in a circular band that broadens with time.

Using for the first time the newest Planck maps available, Puget and his collaborators have directly examined the polarization of dust in these high galactic regions rather than extrapolating from dustier regions in the plane of the Milky Way.

One possibility is a concept called radial migration, in which gravitational interactions among young stars can set them spiraling either far outward or inward from the galactic region in which they formed.

Neil Price has assembled images and maps of the galactic region around Sagittarius A *.

The youngest stars in the galactic region surrounding around the Solar Neighborhood are associated with «subgroup B1» of the Pleiades (M 45) stellar moving group, and astronomers hypothesize that the more massive stars born in this group may have already exploded as 20 or so supernovae over the past 10 to 20 million years as the entire group of stars moved through a nearby region of the Local Bubble (Berghoefer and Breitschwerdt, 2002).

Not exact matches

This boatload had gone unnoticed because astronomers previously assumed luminous traces of the galaxies in Coma indicated small, insignificant bodies, and not just the most visible central regions of otherwise very dim objects — the tips of galactic icebergs, as it were.

As our solar system slowly orbits around the galactic center, the sun's ultraviolet radiation carves out an egg - shaped region of ionized hydrogen atoms surrounded by neutral hydrogen gas.

The leading suspects in the half - century old mystery of the origin of the highest - energy cosmic particles in the universe were in galaxies called «active galactic nuclei,» which have a super-radiating core region around the central supermassive black hole.

If gas falls into the object, it can heat up and glow, turning the region just outside the black hole into a quasar — a brilliant galactic nucleus that can outshine the entire Milky Way.

Voyager 1 observes low - energy galactic cosmic rays in a region depleted of heliospheric ions.

The results indicate that for the Milky Way and other spiral galaxies, the most dangerous regions are in the galactic centers, whereas the more diffuse spiral arms pose fewer hazards and are therefore more hospitable to life.

The central region of M77 is an «active galactic nucleus,» or AGN, which means that matter is vigorously falling toward the central supermassive black hole and emitting intense light.

Ordinary 7x35 binoculars, and especially 7x50s, will reveal star clusters and intriguing nebulas crowded into the region between the tail and the galactic core.

Previous Planck analyses did not show the amount of dust polarization in that patch of sky or other high - galactic - latitude regions of the Milky Way because of the relative sparseness of dust and low signal compared to noise in these regions (see «Milky Way map skirts question of gravitational waves»).

Averaging over some 350 high - galactic - latitude patches of sky similar in size to the region observed by BICEP2, Puget reported that polarization from interstellar dust grains plays a significant role and might account for much of the BICEP2 signal that had been attributed to inflation - generated gravitational waves.

After accounting for the deflection of the cosmic rays by the Milky Way's magnetic field, the team found that the particles are travelling about 326 million light years from a region of extragalactic space containing several potential sources, such as active galactic nuclei and starburst galaxies.

«What I see in the control regions looks just like what I see in the galactic center,» says astrophysicist Andrea Albert of Los Alamos National Laboratory in New Mexico, one of the researchers who worked on the analysis.

In 2015, it came to light that NGC 1512 has a history when it comes to galactic cannibalism, as it was revealed that the outer regions of its spiral arms are actually formed from a separate, even older galaxy.

Here is a map showing many of the dark nebula regions within 2000 light years plotted onto the galactic plane.

Furthermore, particle flux upper limits are reported from selected candidate sources such as the galactic center region.

This illustration shows the connection between measurements of the galactic center region from the H.E.S.S. observatory in the TeV energy range and the derived flux upper limit from the Pierre Auger Observatory in the EeV energy range.

From this perspective, astronomers have been actively working on the starburst regions of galaxies (* 1) and the active galactic nuclei (AGN) at the center of galaxies, which are called circumnuclear disks (CND)(* 2).

^ Blitz, L., Fich, M., & Stark, A. A. 1982, Astrophysical Journal Supplement Series, Catalog of CO radial velocities toward galactic H II regions

Until the giant galactic void was further studied by the University of Minnesota researchers, it was known as the «WMAP Cold Spot» because NASA scientists measured colder temperatures in the region than in surrounding areas.

Blazars are active galactic nuclei — energetic regions surrounding massive black holes at the centers of galaxies.

The nuclear region of M87 is known as an «active galactic nucleus» due to its brightness in visible, x-ray, radio, and other wavelengths of light.

The properties of Terzan 5 are not like the ones found in a globular cluster, but they are very similar to the stellar population found in the Milky Way's galactic bulge — a tightly packed central region of the galaxy.

Another idea floating around is that FRBs are emitted by active galactic nuclei, or AGNs — superluminous regions at the centers of some galaxies.

Mature galactic disks form later, composed of many star - forming regions at 50 — 100 parsec in size.

The observed CH + reveals dense shock waves, powered by hot, fast galactic winds originating inside the galaxies» star forming regions.

Region in galactic center containing the Arches Cluster and Bubbles, the Quintuplet Cluster, and the Pistol Nebula and Star (more from Andrea Moneti) and Moneti et al, 2001).

These clear windows through the Galaxy have great significance in the study of galactic structure, since they make it possible to study otherwise hidden, distant regions (after Murdin / Allen / Malin's Catalogue of the Universe, 1979).

With its powerful infrared sensitivity and resolution, Webb will be able to peer into star - forming regions across the entire Milky Way galaxy, where previous infrared telescopes were limited to dust clouds within our own galactic neighborhood.

Webb will study star - birth regions in merging galaxies, revealing how these galactic encounters trigger and alter the course of star formation.

Webb will study star - birth regions in merging galaxies, revealing how these galactic encounters trigger and alter the course of star formation as their gaseous components collide and mix.

The «Local Bubble» of low - density, hot and ionized gas, is actually part of a tube - like chimney that extends through the local region of the spiral disk into the surrounding galactic halo, and so may can act as a vent for the energetic hot gas produced by supernovae (more).

The local void of gas extends out of the galactic disk and stretches into the overlying galactic halo region.

Astronomer Vera Cooper Rubin found over decades of radio observations that the rotational velocity of clouds of ionized hydrogen (HII regions) in spiral galaxies like the Milky Way was not decreasing at increasing distance from their galactic cores, like the velocity of the planets around the Sun.

This two light - year square image of the innermost region of the galactic core depicts hot stars in blue and cool stars in red, and two arrows pointing towards Sgr A * and S2 (more at ESO and Astronomy Picture of the Day).

The central region of the Milky Way is dominated by a bar - like structure, which stirs up the material in the outer galactic disk as it rotates over millions of years and may be responsible for its spiral structure.

Re: joshv (# 35), I gave examples (mass of universe / galaxies) and can add more: age of the universe, age of stars, fusion sequences within stars, elemental makeup of different regions of a star, galactic rotation speeds, ~ 3K background radiation... there's lots.