Sentences with phrase «spectral signatures»

Kiang, N.Y., A. Segura, G. Tinetti, Govindjee, R.E. Blankenship, M. Cohen, J. Siefert, D. Crisp, and V.S. Meadows, 2007: Spectral signatures of photosynthesis II: Coevolution with other stars and the atmosphere on extrasolar worlds.

Kiang, N.Y., J. Siefert, Govindjee, R.E. Blankenship, and V.S. Meadows, 2007: Spectral signatures of photosynthesis I: Review of Earth organisms.

The spectral signatures are almost perfectly cancelled, implying that the combination of both spectra is equal to the model C spectrum.

Will, if you read the spectral signatures as radiating from at or above the tripopause, then you need new glasses.

Since aerosols, clouds, and the ground surface have very different polarization spectral signatures, it is possible to sort out the aerosol radiative properties from changes in surface albedo and cloud contamination.

Hubble's millionth observation records the spectral signatures of the gas giant HAT - P - 7b, a planet larger than Jupiter orbiting a star hotter than our sun.

-- to model atmospheric spectral signatures (the light fingerprint of a planet or moon), including biosignatures of known and hypothetical planets to explore whether or not they could be habitable.

By revealing the spectral signatures of dimethyl ether and methyl formate, Sewiło and collaborators further prove that organic chemistry is hard at work in hot cores in the LMC.

We have also discovered six M7 - L1 dwarfs in outlying regions of Scorpius - Centaurus with photometry, proper motions, and low - gravity spectral signatures consistent with membership.

Comparing their spectra suggests that young L dwarfs with similar ages and temperatures can have different spectral signatures of youth.

Even when compared against microbial melanin, the spectral signatures matched more closely with an animal source.

Most lunar terrains have spectral signatures that are consistent with known lunar anorthosite and basalt compositions.

The powder is delivered as an aerosol that clings to metal, glass and cloth, and batches can be engineered to have distinct spectral signatures.

But it took until the eclipses of 1868 and 1869, when the spectral signatures of atoms in the corona were first discovered, for us to start understanding it as an actual astrophysical place instead of just a shining mirage.

Ojha and his co-authors interpret the spectral signatures as caused by hydrated minerals called perchlorates.

«We also anticipate that the use of this method will be able to evaluate human serum samples to identify spectral signatures that can distinguish between Crohn's disease and ulcerative colitis.»

Sara Seager of MIT, who collaborates with Deming, is trying to figure out which spectral signatures in a planet's atmosphere would provide the best evidence for signs of life.

«In addition, the use of ATR - FTIR spectroscopy on serum samples could identify spectral signatures specifically predicting the development of colitis, thereby positively affecting drug management,» Merlin said.

But because the cloud is so huge, with thick patches illuminated by brilliant young stars, even trace amounts of different substances leave detectable spectral signatures.

Spectral signatures from the most recent brightening show the characteristics of a type IIn supernova.

Such an object, called an obese black hole galaxy (OBG), should have a very special spectral signature, particularly in the infrared wavelengths between one and 30 microns where the JWST's Mid-Infrared Instrument (MIRI) and Near - Infrared Camera (NIRCam) cameras will operate.

The telescope identified the spectral signature of the hydrogenic ion, which has been detected in our own solar system in the upper atmospheres of Jupiter, Saturn and Uranus.

To find an exoplanet's atmosphere, a telescope would record the spectral signature when the planet transits in front of its host star and again when it's behind.

As a result, even though several airports already rely on a type of terahertz security scanners, they typically use low - frequency, continuous - wave energy at a single terahertz frequency, which enables them to create images of items carried in suitcases and pockets but not a spectral signature of those items that would indicate their composition.

The European Space Agency's Venus Express spacecraft has detected the spectral signature of ozone in a thin layer 100 kilometres above the planet's surface.

The subtle spectral signature of carbonates was identified by the high - resolution CRISM spectrometer on NASA's Mars Reconnaissance Orbiter.

It took Herschel's far - infrared vision to see, finally, a clear spectral signature of the water vapor.

Reeves's team measured the spectral signature of a hot, expanding shell of supernova debris in the x-ray afterglow of another GRB, GRB 011211.

«It was very clear that there was carbonate in that spectral signature,» Ruff says.

Mission scientists announced preliminary results from the experiment in November 2009, including the spectral signature of water in the debris plume tossed up by the impact.

Last week, lunar scientists made a splash when they announced that three spacecraft — India's Chandrayaan - 1 craft and NASA's Cassini and Deep Impact probes — have detected water's spectral signature over much of the moon's surface.

The US Air Force is funding work to let drones tag suspects or cars with a spray that gives them a distinct spectral signature, making them easy to track

«What makes the HDC method so powerful is that the spectral signature of the planet can be picked out, even when it's still buried in the glare of the star after the coronagraph,» Ruane tells HowStuffWorks.

When hydrogen gas is heated by the ultraviolet emissions of new stars, it produces a spectral signature called the Lyman - alpha line.

«We look for a change in the spectral signature from before and after the storm,» said Chambers, a scientist in Berkeley Lab's Earth and Environmental Sciences Area as well as an associate professor of geography at UC Berkeley.

The researchers quantified the spectral signature of each forested pixel before and after the storms to determine the change in the fraction of the surface that is considered non-photosynthetic vegetation.

«We measured the spectrum of the planet using this method at a wavelength range which is very sensitive to the spectral signature of water molecules.»

«We look for a change in the spectral signature from before and after the storm,» said Chambers, a scientist in Berkeley Lab's Earth and Environmental Sciences Area as well as an associate professor of geography at UC Berkeley.

We find dramatic changes in the spectral signature of the forests associated with damage, tree mortality, uprooted trees, stripped leaves, and canopies.»

The researchers quantified the spectral signature of each forested pixel before and after the storms to determine the change in the fraction of the surface that is considered non-photosynthetic vegetation.

Yang, P., M.G. Mlynczak, H. Wei, D.P. Kratz, B.A. Baum, Y.X. Hu, W.J. Wiscombe, A. Heidinger, and M.I. Mishchenko, 2003: Spectral signature of ice clouds in the far - infrared region: Single - scattering calculations and radiative sensitivity study.

Not exact matches

The spectral data allowed the team to add 21 chemical signatures, including water content and leaf pigment, to assess the health of the forest.

That was consistent with a quasar, but dust blocked the definitive quasar signature of spectral lines emitted by gas near the black hole.

Now, thanks to near - infrared spectral measurements taken by NASA's Cassini orbiter and analysis of near - infrared color signatures by researchers at the University of Wisconsin - Madison, Saturn's superstorm is helping scientists flesh out a picture of the composition of the planet's atmosphere at depths typically obscured by a thick high - altitude haze.

Her signature stitches or sutures are particularly evident in the spectral Atrabiliarios, occupying the silent whiteness of a single gallery.

Simulations aim to understand how different irradiance spectra affect a planet's habitability and climate dynamics and its radiance signature, due to the spectral absorbance properties of different atmospheres and different surface spectral albedos resulting from the gradual spread of life over land and adaptations of photosynthetic pigments to other light regimes.

Photosynthesis produces signs of life we can see from space: atmospheric oxygen and the vegetation «red - edge», a spectral reflectance signature of vegetation on land.

The video spectral comparator subjected the questioned signature to various different lights, enabling ink comparisons and other detailed inspections to be made.