Sentences with phrase «using photometry»

Next, we'll explore how the Kepler mission is using photometry to perform a stellar census of potentially habitable planets.

, by Eloy Rodríguez, explains how we are using photometry to complement radial velocity data from HARPS.

Abstract: We present rotation periods for 71 single dwarf members of the open cluster NGC6811 determined using photometry from NASA's Kepler Mission.

The rotation periods delineate a tight sequence in the NGC6811 color - period diagram from ~ 1 day at mid... ▽ More We present rotation periods for 71 single dwarf members of the open cluster NGC6811 determined using photometry from NASA's Kepler Mission.

Our latest article, by Eloy Rodríguez, explains how we are using photometry to complement radial velocity data from HARPS.

Abstract: The NASA K2 mission uses photometry to find planets transiting stars of various types.

In this paper, we present stellar parameters from K and M dwarfs hosting transiting planet candidat... ▽ More The NASA K2 mission uses photometry to find planets transiting stars of various types.

Not exact matches

«Thus far, solutions based on incandescent lamps have been used in photometry, i.e. in measuring light detected by the human eye,» explains Tomi Pulli, a doctoral student at Aalto University.

For the brighter targets, CoRoT provides photometry in 3 different uncalibrated «colors» that can be used to reject planet candidates.

Applying aperture photometry on the azimuthally averaged deconvolved PACS images and using a modified blackbody of the form Bν · λ − β, as expected for a grain emissivity Qabs ~ λ − β with β equal to 1.2 (representing amorphous carbon, Mennella et al. 1998), we derived a dust temperature between 108 ± 5 K at 20 ′ ′ and 40 ± 5 K at 180 ′ ′.

(See a CCD field image of CM Draconis and comparison stars used in differential photometry from the Transits of Extrasolar Planets — TEP — Network of astronomers.)

Using our new photometry, we measure the density of the star KELT - 11 to 4 %.

Potential transit signals are subjected to further analysis using the pixel - level data, wh... ▽ More We provide updates to the Kepler planet candidate sample based upon nearly two years of high - precision photometry (i.e., Q1 - Q8).

Version 2 incorporates tiny cosmetic changes to match final published version, including a revised Figure 1 that uses the most recent AB Pic b photometry from Biller et al (2013)

For these studies we use the high - precision time - resolved Hubble Space Telescope near - infrared spectroscopy and Spitzer Space Telescope photometry in multiple programs.

We identified several candidates around known stellar members using a combination of color selection and spectral energy distribution... ▽ More We have combined optical and NIR photometry from Pan-STARRS 1 and UKIDSS to search the young (5 - 10 Myr) star - forming region of Upper Scorpius for wide (~ 400-4000 AU) substellar companions down to ~ 5 Mjup.

We identify PSO J060.3200 +25.9644 (near - infrared spectral type L1) and PSO J077.1033 +24.3809 (L2) as new members of Taurus based on... ▽ More We present the discovery of eight young M7 - L2 dwarfs in the Taurus star - forming region and the Scorpius - Centaurus OB Association, serendipitously found during a wide - field search for L / T transition dwarfs using Pan-STARRS1 (optical) and WISE (mid-infrared) photometry.

Using the very high precision Kepler photometry, and follow - up observations, our confidence that these signals re... ▽ More We present the discovery of a super-earth-sized planet in or near the habitable zone of a sun - like star.

Twenty - two months of photometry are used for the purpose of characterizing each of the new candidates.

The initial transit signal was identified in KELT - North survey data, and the planetary nature of the occulter was established using a combination of follow - up photometry, high - resolution imaging, high - resolution spectroscopy, and precise radial velocity measurements.

Using public Kepler photometry, we demonstrate that the two observed transits can be uniquely attributed to the 704.2 day period.

Because the star is evolving up the sub-giant branch, K2 - 66b receives a high level... ▽ More We report precise mass and density measurements of two extremely hot sub-Neptune-size planets from the K2 mission using radial velocities, K2 photometry, and adaptive optics imaging.

Abstract: We use the optical and near - infrared photometry from the Kepler Input Catalog to provide improved estimates of the stellar characteristics of the smallest stars in the Kepler target list.

Archival and follow - up photometry, the Gaia parallax, radial velocities, Doppler tomography, and adaptive optics imaging were used to confirm the planetary nature of the companion and characterize the system.

Using the very high precision Kepler photometry, and follow - up observations, our confidence that these signals represent planetary transits is > 99.1 %.

We derive new photometry and confirm the nearly daily photometric variability of PZ Tel A. Using literature data spanning 38 yr, we show that the star also exhibits a long - term variability trend.

Kepler measures the size of planets and their distance from stars using a technique known as transit photometry, in which the telescope watches for small decreases in the light visible from specific stars, indicating that a planet has passed in front.

We used the so - called negative planets injection technique to extract their photometry, spectra, and measure their positions.

Abstract: The Kepler Mission, launched on Mar 6, 2009 was designed with the explicit capability to detect Earth - size planets in the habitable zone of solar - like stars using the transit photometry method.

The object was discovered using Gemini - South and followed - up with Gemini - North spectroscopy and CFHT photometry.

Many as... ▽ More The Kepler Mission, launched on Mar 6, 2009 was designed with the explicit capability to detect Earth - size planets in the habitable zone of solar - like stars using the transit photometry method.

Two distinct sets of transit events were detected: 1) a 152 + / - 4 ppm dimming lasting 1.811 + / - 0.024 hours with ephemeris T [BJD] = 2454964.57375 + N... ▽ More NASA's Kepler Mission uses transit photometry to determine the frequency of earth - size planets in or near the habitable zone of Sun - like stars.

We use broadband photometry and asteroseismology to characterize 11,532 Kepler targets which were previously unclassified in the Kepler Input Catalog (KIC).

We use spectroscopic data from a variety of large surveys combined with infra - red photometry from 2MASS and AllWISE and compare these in a Bayesian manner with PARSEC isochrones to derive probability density functions (PDFs) for stellar masses, ages and distances.

Considering two different cluster ages (100 and 150 Myr), we selected cluster member candidates on the basis of their location in the (I,I - z) CMD relative to the isochrones, and estimated the contamination by foreground late - type field dwarfs using statistical arguments, infrared photometry and low - resolution optical spectroscopy.

As of DR6, PSF photometry uses the same PSF models (and sky background subtraction) for zeropoint - fitting as is later used in cataloging.

The catalog is based on a compilation of literature values for atmospheric properties (temperature, surface gravity, and metallicity) derived from different observational techniques (photometry, spectroscopy, as... ▽ More We present revised properties for 196,468 stars observed by the NASA Kepler Mission and used in the analysis of Quarter 1 - 16 (Q1 - Q16) data to detect and characterize transiting exoplanets.

We analyze our data using two Teff scales, the spectroscopic values from DR13 and those derived from SDSS griz photometry.

We use Herschel and APEX photometry to determine the stellar spectral energy distributions.

It took until 1885 for photographic plates to be systematically used in photometry.

Combining these new images and photometry with ancilliary data from the literature, we undertook simultaneous multi-wavelength modelling of the discs» radial profiles and spectral energy distributions using three different methodologies: single annulus, modified black body, and a radiative transfer code.

Alexandrov, M.D., B.E. Carlson, A.A. Lacis, and B. Cairns, 2005: Remote sensing of fine and coarse mode atmospheric aerosols using ground - based sun - photometry.