Sentences with phrase «spectroscopic observations of»

Struve's own research involved spectroscopic observations of stars and gas in the Milky Way.

«Spectroscopic observations of Vesta's surface indicate that it is covered with volcanic basalt, leading researchers to conclude that Vesta's interior once melted.

With AKARI, we performed near - infrared (2.5 - 4.5 um) spectroscopic observations of 34 regions in M 82 including its northern and southern halos.

«Spectroscopic observations of the white dwarf allowed us to measure the abundances of the rocky material as it is being accreted and filtered through the star's atmosphere in real time,» Melis said.

The Near Infrared Camera and Multi-Object Spectrometer (NICMOS) is an HST instrument providing the capability for infrared imaging and spectroscopic observations of astronomical targets.

New results include Hubble Space Telescope spectroscopic observations of the TRAPPIST - 1 earth - sized planets (planets bcdefg).

In order to identify false positives and confirm transiting exoplanets, we have assembled a follow - up network (KELT - FUN) to conduct imaging with higher spatial resolution, cadence, and photometric precision than the KELT telescopes, as well as spectroscopic observations of the candidate host stars.

The appearance of the plumes in this graphic is based on spectroscopic observations of oxygen and hydrogen in the auroral emissions.

The team inferred the presence of high - energy electrons using IRIS high - resolution ultraviolet imaging and spectroscopic observations of those footpoint brightenings.

Not exact matches

But telescopic and spectroscopic observation, and increasingly exact calculations, are transforming this comfortable spectacle into a vision that is very much more unsettling, one which in all probability will profoundly affect our moral outlook and religious beliefs when it has passed from the minds of a few initiates into the mass - consciousness of Mankind as a whole: immensities of distance and size, huge extremes of temperature, torrents of energy...

This intriguing fingerprint quickly triggered additional observations by teams of astronomers worldwide who obtained observing time with additional space observatories including NASA's Chandra X-ray Observatory and NASA's Nuclear Spectroscopic Telescope Array (NuSTAR).

Such observations are pushing the spectroscopic powers of even the Hubble Space Telescope to its limits.

«Other spectroscopic instruments have flown in space before but none have had this programmable multi-object capability that enables observation of up to 100 objects simultaneously, which means much more scientific investigating can get done in less time.

«Astronomers find evidence of water clouds in first spectrum of coldest brown dwarf: Difficult spectroscopic observations reveal properties of the coldest known object outside of our solar system.»

In 2010, Pieter van Dokkum of Yale University and Charlie Conroy of the Harvard - Smithsonian Center for Astrophysics in Cambridge, Massachusetts, used spectroscopic observations to discover that eight massive elliptical galaxies had given birth to an even greater proportion of small stars than the Milky Way did.

Materials known to exist at Pluto's surface from ground - based spectroscopic observations include highly volatile cryogenic ices of N2 and CO, along with somewhat less volatile CH4 ice, as well as H2O and C2H6 ices and more complex tholins that are inert at Pluto surface temperatures.

Measurements of surface chemical composition, either by direct sampling (as has been done on Earth, the moon, and Mars) or through spectroscopic observations, can be used to estimate elemental abundances and the degree of chemical differentiation that occurred as the planets condensed from the solar nebula.

Spectroscopic observations revealed that the planet is only about three to four times the size of the star — but its hydrogen emissions are almost as bright as the emission emanating from the star.

The results of follow - up observations (see Table 2) are a mixture of results from photometric follow - up (Deeg et al. 2009), which identifies contaminating» diluted EB's that are more than about 2 distant from the third star - which usually coincides with the observing target -, and from spectroscopic (radial velocity) results, which can only identify signals from sources that fall into the spectrograph's entry slit; that is, they have to be very close (less than 1 - 2) to the target.

The number of planets discovered at 500 nm (black curve) that could also be detected at longer wavelengths (colored curves), as desired for spectroscopic observations, as a function of telescope aperture size and for two different assumed inner working angles.

Recently, Hallinan et al. (2015) reported simultaneous radio and optical spectroscopic observations (obtained with the Karl G. Jansky Very Large Array (VLA) radio telescope and the Double Spectrograph (DBSP) on the 5.1 - m Hale telescope, respectively) of auroral emissions of an object at the end of the stellar main sequence (i.e. at the boundary between stars and brown dwarfs).

The latter would enable the most detailed possible analysis, providing a crucial link with remote spectroscopic observations and the compositions of meteorites in order to develop a much wider understanding of these small bodies, their properties, and what they can tell us about the evolution of the solar system.

Spectroscopic observations taken with the GTC - 10.4 m telescope reveal a broad (FWHM ~ 1100 km / s), double - peaked H alpha emission line from which we constrain the radial velocity semi-amplitude of the donor to be K2 > 250 km / s.

The goal of the survey was to characterize planets orbiting low - mass stars, but our IRTF / SpeX and Palomar / TripleSpec spectroscopic observations revealed that 49 % of our targets were actually giant stars or hotter dwarfs reddened by interstellar extinction.

However, we also specifically show how high - contrast AO and speckle imaging observations detect companions at larger separations ($ \ theta \ geq $ 0.02 - 0.05») that are missed by the spectroscopic technique, provide additional information for characterizing the companion and its potential contamination (e.g., PA, separation, $ \ Delta $ m), and cover a wider range of primary star effective temperatures.

A team of astronomers, led by Thomas Beatty of Pennsylvania State University, used the Hubble Space Telescope's Wide Field Camera 3 (WFC3) to perform a spectroscopic study of the planet's atmosphere in the near - infrared and conducted the observation as the planet passed behind its parent star.

By using advanced high contrast imagers, it is possible to conduct high resolution spectroscopy on imageable exoplanets, after the star light is first suppress... ▽ More Spectroscopic observations are extremely important for determining the composition, structure, and surface gravity of exoplanetary atmospheres.

Archive centers may wish to utilize this system to quantify classes of formerly arbitrary spectral classification strings found in classification catalogs corresponding to datasets of pointed spectroscopic observations in their holdings.

Abstract: Spectroscopic observations are extremely important for determining the composition, structure, and surface gravity of exoplanetary atmospheres.

«We are looking at several cubic miles of lava in rapidly emplaced flows,» said Davies, who has developed models to predict the volume of magma erupted based on spectroscopic observations.

MATISSE is a four - way beam combiner, meaning it combines the light collected from up to four of the Unit Telescopes or up to four of the Auxiliary Telescopes that make up the VLTI, performing both spectroscopic and imaging observations.

I have used the theory to interpret spectroscopic observations and interactions of relevance in colloid science.

The spectroscopic, imaging and polarimetric observations that SPICA will b... ▽ More The SPICA mid and far - infrared telescope will address fundamental issues in our understanding of star formation and ISM physics in galaxies.

To further investigate, astronomers led by Nanda Rea of the University of Amsterdam sought help from NASA's Chandra and Nuclear Spectroscopic Telescope Array, or NuSTAR, to follow up with the observations.

Using the twin telescopes of the Keck Observatory on Maunakea, Hawaii, the researchers were able to gather spectroscopic data from the afterglow of the supernova and observations of its host galaxy to better understand what might be driving this oddity.

Potential topics include: (1) Advanced numerical modelling of magnetic flux tubes / loops in the low solar atmosphere (2) Forward modelling of spectroscopic and narrowband EUV observations of the low solar atmosphere, (3) Solar Rotational Tomography of EUV and / or coronagraph coronal observations, (4) Automated detection and prediction of coronal mass ejections, (5) Analysis of solar wind turbulence observations by in situ spacecraft, (6) Eclipse instrumentation, observations and data analysis.

Accurate measurement of GRB 000131's redshift required spectroscopic observations.

Giant transiting exoplanets are easily mimicked by false positives, so spectroscopic follow - up observations are needed to establish the planetary nature of the transit detections, and easily reveal blended multiple stellar systems.

The spectroscopic, imaging and polarimetric observations that SPICA will be able to collect will help in clarifying the complex physical mechanisms which underlie the baryon cycle of galaxies.

The baffling and strange behaviours of black holes have become somewhat less mysterious recently, with new observations from NASA's Explorer missions Swift and the Nuclear Spectroscopic Telescope Array, or NuSTAR.

Current research in the Hida Observatory of Kyoto University has emphasis on the followings; (a) Study of solar MHD processes with spectroscopic and spectro - polarimetric observations using the 60 cm Domeless Solar Vacuum Tower Telescope (DST) combining with data from space solar missions (such as Hinode).

[23] The 1800s saw spectroscopic studies of the Sun advance, and Joseph von Fraunhofer made the first observations of absorption lines in the spectrum, the strongest of which are still often referred to as Fraunhofer lines.

By re-observing the photometric transit, we attempt to determine the transit parameters to high precision, and, by spectroscopic observations, to estimate the properties of the host star and determine the mass of the transiting object by means of radial - velocity measurements.

The evidence for this is a mountain of spectroscopic data about the behaviour of the greenhouse gases from laboratory observations, ground level observations, high altitude aircraft observations and more recently satellite observations.

The «clear sky radiative forcing due to CO2» (3.7 W / m ^ 2 for a doubling per Myhre et al. 1998b and IPCC TAR) is not a measured entity based on empirical data from actual physical observations or reproducible experimentation, but rather an estimated value based on laboratory studies of spectroscopic data.