Sentences with phrase «with photometric»

So far consortia carrying out the different spectroscopic surveys have used different tools to determine stellar parameters of stars from their derived effective temperatures (Teff), surface gravities (log g) and metallicities -LRB-[Fe / H]-RRB- possibly combined with photometric, astrometric, interferometric or asteroseismic information.

Ellen Howell (National Astronomy and Ionospheric Centre, NAIC, Arecibo Observatory) and Mikko Kaasalainen (Helsinki University) were provided with photometric data to support radar observations and asteroid shape modeling respectively.

With photometric and spectroscopic observations, we have been able to learn about the surface properties and the physical processes acting on these large planetoids.

The planet has also been detected with the photometric transit method.

As with kinematic distance estimates, there are a number of problems with this photometric approach.

Not exact matches

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.

Abstract: We present: 1) a kinematic and morphological study of the giant Lya nebula associated with the radio galaxy MRC2104 - 242 (z = 2.49) based on integral field spectroscopic VIMOS data from VLT; 2) a photometric study of the host (proto?)

Hubble photometry of one of the three galaxy groups identified at z ~ 8, with the galaxies in the image labeled with their corresponding approximate photometric redshifts.

We present 130 ultracool dwarf discoveries with estimated distances $ \ approx9 - 130 $ pc, including 21 that were independently discovered by other authors and 3 that were previously identified as photometric candidates.

Using the high angular resolution of the Keck II telescope, combined with a large number of photometric observations taken since 1957, the team built a refined shape hoping to get a clue to the origin of the system.

Abstract: The Kepler Mission was launched on March 6, 2009 to perform a photometric survey of more than 100,000 dwarf stars to search for Earth - size planets with the transit technique.

The KELT images have a pixel scale of ~ 23 arsec per pixel (similar to TESS) and a large point spread function, and the KELT reduction pipeline uses a weighted photometric aperture with radius 3 arcmin.

We distill these candidates into sets of 104 validated planets (57 in multi-planet systems), 30 false positives, and 63 remaining candidat... ▽ More We present 197 planet candidates discovered using data from the first year of the NASA K2 mission (Campaigns 0 - 4), along with the results of an intensive program of photometric analyses, stellar spectroscopy, high - resolution imaging, and statistical validation.

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.

This demonstrates the role that precise Gaia parallaxes, coupled with simultaneous photometric, RV, and SED fitting, can play in determining stellar and planetary parameters.

Major sources of astrophysical false positives are planetary transits and stellar eclipses on background... ▽ More The Kepler Mission was launched on March 6, 2009 to perform a photometric survey of more than 100,000 dwarf stars to search for Earth - size planets with the transit technique.

We also show that K1 - K2 color can be used with YJH low - resolution spectra to identify young L - type companions, provided high photometric accuracy (< 0.05 mag) is achieved.

The architect of the first scientific - grade EMCCD, Photometrics maintains its leadership role with the release of its award - winning Prime 95B, the Scientific CMOS with 95 % quantum efficiency for super-resolution microscopy, and the Iris 15 CMOS with a large field of view for light sheet microscopy.

Recent progress has been made to address this: (1) the discovery that gamma Cas is an eccentric binary system (P = 203.59 d) with unknown secondary type, (2) the accumulation of RXTE data at 9 epochs in 1996 - 2000, and (3) the collation of robotic telescope B, V - band photometric observations over 4 seasons.

Unfortunately with such a poorly constrained orbit, three weeks of nearly continuous photometric monitoring of α Centauri B will be required to confirm this hypothesis.

Abstract: The Kepler Mission was launched on March 6, 2009 to perform a photometric survey of more than 100,000 dwarf stars to search for terrestrial - size planets with the transit technique.

Follow - up observations of planetary candidates identified by detection of transit - like events are needed both for identification of astrophysical phenomena that mimic planetary transits and for characterization of the... ▽ More The Kepler Mission was launched on March 6, 2009 to perform a photometric survey of more than 100,000 dwarf stars to search for terrestrial - size planets with the transit technique.

These unique unbiased photometric surveys that SPICA will perform will be followed up by observations both with the SPICA spectrometers and with other facilities at shorter and longer wavelengths, with the aim to fully characterise the evolution of AGNs and star - forming galaxies after re-ionisation.

Abstract: Photometric observations made by the NASA Kepler Mission have led to a dramatic increase in the number of main - sequence and subgiant stars with detected solar - like oscillations.

Abstract: Based on more than four weeks of continuous high cadence photometric monitoring of several hundred members of the young cluster NGC 2264 with two space telescopes, NASA's Spitzer and the CNES CoRoT (Convection, Rotation, and planetary Transits), we provide high quality, multi-wavelength light curves for young stellar objects (YSOs) whose optical variability is dominated by short duration flux burs... ▽ More Based on more than four weeks of continuous high cadence photometric monitoring of several hundred members of the young cluster NGC 2264 with two space telescopes, NASA's Spitzer and the CNES CoRoT (Convection, Rotation, and planetary Transits), we provide high quality, multi-wavelength light curves for young stellar objects (YSOs) whose optical variability is dominated by short duration flux bursts, which we infer are due to enhanced mass accretion rates.

Abstract: With the advent of dedicated photometric space missions, the ability to rapidly process huge catalogues of stars has become paramount.

From photometric lightcurves obtained with the Isaac Newton Telescope, we measure rotation... ▽ More We investigate the rotation periods of fully convective very low mass stars (VLM, M < 0.3 Msol), with the aim to derive empirical constraints for the spindown due to magnetically driven stellar winds.

From photometric lightcurves obtained with the Isaac Newton Telescope, we measure rotation periods for 49 objects, among them 26 in the VLM domain.

Abstract: We studied solar - like oscillations in 115 red giants in the three open clusters NGC 6791, NGC 6811, and NGC 6819, based on photometric data covering more than 19 months with NASA's Kepler space telescope.

The method makes precise predictions that are consistent with other method... ▽ More With the advent of dedicated photometric space missions, the ability to rapidly process huge catalogues of stars has become paramowith other method... ▽ More With the advent of dedicated photometric space missions, the ability to rapidly process huge catalogues of stars has become paramoWith the advent of dedicated photometric space missions, the ability to rapidly process huge catalogues of stars has become paramount.

Weak lensing cosmology will be challenging: in addition to highly accurate galaxy shape measurements, statistically robust and accurate photometric redshift (photo - z) estimates for billions of faint galaxies will... ▽ More A key goal of the Stage IV dark energy experiments Euclid, LSST and WFIRST is to measure the growth of structure with cosmic time from weak lensing analysis over large regions of the sky.

To test for a correlation between magnetic activity and photometric variability, we searched for H$ \ alpha $ emission among eight L3 $ - $ T2 ultra-cool dwarfs with extensive previous photometric monitoring, some of which are known to be variable at 3.6 $ \ mu $ m or 4.5 $ \ mu $ m.

Mid-infrared photometric data with -LCB- \ it -LCB- AKARI -RCB--RCB- / IRC MIR - S / S7, S9W, and S11 bands have shown excess emission over the thermal emission by hot amorphous carbon of 800K.

We confirm that the radial velocimetry and photometric survey data sets are compatible within the statistical errors, assuming that planets with periods between 1 and 2 days are approximately 5 times less frequent than planets with periods between 2 and 5 days.