Sentences with phrase «along one's line of sight»

The blue - to - red colors correspond to the varying speed of the emitting gas along our line of sight.

The only problem was that the team found no such cluster anywhere along the line of sight.

Combining this tiny displacement with the hole's previously determined velocity along the line of sight as it zooms toward Earth yielded its velocity in three dimensions.

The giveaway is a slight but regular slowing and speeding of the star along the line of sight as it's tugged by the planet's gravity.

Based on the extreme, deduced photometric redshift of GRB 000131 indicating that the gamma rays had travelled an extreme long cosmological distance, astronomers predicted a «break» in the red region of the spectrum around 670 to 700 nm from the strong absorption of light from intervening intergalactic hydrogen clouds along the line of sight between GRB 000131 and the Solar System.

«They've assumed all the gas in the filaments is right along the line of sight between the two galaxies; and that's probably not right.»

Rusu's contribution was to measure the distribution of mass along the line of sight from quasar to telescope.

If instead the distance is about 1,500 light - years (the current best estimate), the long - term dimming could perhaps be because of chance patterns of intervening dust along the line of sight.

It differs dramatically from the way typical cameras and microscopes focus, which involves moving separate glass lenses back and forth along the line of sight.

«This means that light from a cosmologically distant quasar will be deflected, or gravitationally lensed, by the intervening galaxy along the line of sight before arriving at an observer on the Earth,» said Chen of the phenomenon of gravitational lensing, which was predicted by Einstein in 1936.

To draw that conclusion, the researchers had to rule out other effects, such as polarization that could arise from dust particles along the line of sight.

It could be that the dust and gas exist in a very thin ring sprawled wide around the star, so that the ring blocks starlight along our line of sight without producing much infrared excess.

Ultraviolet and x-ray observations of a binary neutron star merger show a hot kilonova but no jet along the line of sight.

To see a glory, you have stand with your back to the Sun, so that the reflected rays return along your line of sight.

Thus, measuring how much gamma rays of different energies are attenuated or weakened from blazars at different distances from Earth indirectly gives a measurement of how many EBL photons of different wavelengths exist along the line of sight from blazar to Earth over those different distances.

For the transit method to work, a planet must pass almost perfectly along our line of sight, the chances of which are around 0.5 percent for an Earth - sized planet (in an Earth - sized orbit) and 10 percent for a Jupiter - sized planet (if it orbits near its star)[source: Ames Research Center, FAQ].

For a smaller subset of ten stars, chosen among those with the smallest errors, the astronomers could also retrieve from the literature an estimate of the radial velocity, which quantifies the stellar motion along the line of sight.

Note that the speed along the line of sight is measurable with the Doppler Effect.

The cylindrically curved crystal provided only a single line of sight through the donut - shaped plasma and could record only the temperature of ions found at points along that line of sight.

It should be noted that we can measure the movement only along the line of sight and it is impossible to measure the movement perpendicular to the line of sight.

One must consider the various effects that alter the measured polarized signal, such as the shape of dust grains, the efficiency of grain alignment, the magnetic field properties, and the projection of the signal along the line of sight.

Messier object number 24 is not a «true» deep sky object, but a huge star cloud in Milky Way, a pseudo-cluster of stars spread thousands of light years along the line of sight, perceived through a chance tunnel in the interstellar dust.

A carbon monoxide spectrum obtained with HARP in the direction of the Galactic Centre showing the presence of three cold clouds with small line widths and one warmer cloud with larger line width, which move at different velocities along the line of sight.

Follow - up observations may be able to spot planetary transits, but only if the planets» orbits carry them past their respective stars along our line of sight.

Our results show not only the magnetic field orientation of around young stellar objects but also the structure of circumstellar matter such as outflow regions and their parent molecular cloud along the line of sight.

Left: Absorption by neutral hydrogen gas along the line of sight.

If we live in an infinite universe containing an infinite number of stars, he reasoned, then we should see a star along all lines of sight.

We need a lens: another galaxy, a heavy one, which can be far away from the source but must sit directly in front of it along our line of sight.

With enough good quasar spectra, close enough together, the position of the gas clouds can be mapped in three dimensions — both along the line of sight for each quasar and transversely among dense patches revealed by other quasar spectra.

The spectra revealed each star's velocity along our line of sight, because a star moving towards us shows a blue shift in its spectrum, whereas a star moving away from us shows a red shift.

A team of astronomers led by Stephan Geier (European Southern Observatory, Garching) observed the known high - velocity star know as US 708 with the Echellette Spectrograph and Imager instrument on the 10 - meter, Keck II telescope to measure its distance and velocity along our line of sight.

Nine out of ten sources show absorption from H2O + in a range of environments: the molecular clumps surrounding the forming and newly formed massive stars, bright high - velocity outflows associated with the massive protostars, and unrelated low - density clouds along the line of sight.