Sentences with phrase «photometry from»

Communicated by S. K. Pierce, College Park Abstract Six diel TCO2 cycles determined by infrared (IR) photometry from five drift stations occupied between 24 February and 16 March 1979 in the mixed layer of the northwestern Caribbean Sea are examined.

Abstract: A search of the time - series photometry from NASA's Kepler spacecraft reveals a transiting planet candidate orbiting the 11th magnitude G5 dwarf KIC 10593626 with a period of 290 days.

The APOGEE red - clump (APOGEE - RC) catalog contains photometry from 2MASS, reddening estimates, distances, line - of - sight velocities, stellar parameters and elemental abundances determined from the high - resolution APOGEE spectra, and matches to major proper motion catalogs.

The characteristics of the host star are well constrained by high - resolution spectroscopy combined with an asteroseismic analysis of the Kepler photometry, leading to an estimated mass and radius of 0.970 + / - 0.060 M... ▽ More A search of the time - series photometry from NASA's Kepler spacecraft reveals a transiting planet candidate orbiting the 11th magnitude G5 dwarf KIC 10593626 with a period of 290 days.

... ▽ More Early time - series photometry from NASA's Kepler spacecraft has revealed a planet transiting the star we term Kepler - 4, at RA = 19h02m27.68 s, Dec = +50:08:08.7.

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.

Abstract: 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 simultaneously fit these observations, ground - based photometry from Pepper et al. (2017), radial velocity data from Pepper et al. (2017), and an SED model utilizing catalog magnitudes and the Hipparcos parallax to the system.

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

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.

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.

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.

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)

(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.)

Not exact matches

The photometry is obtained from onboard aperture photometry by means of large aperture masks, with a size and shape adapted to the large psf of its exoplanet focal plane, where 50 % of the flux is contained in an elliptical area of about 35 23.

We present ten years of archival and new photometry of the companion from LINEAR, CRTS, PTF, the Palomar 60 - inch, and LCOGT.

Following subtraction of the sky background from these frames, differential aperture photometry was carried out on Amalthea and a nearby field star.

We obtained follow - up optical spectra of 105/141 candidate host stars and 8/16 eclipsing binaries to improve stellar properties and to identify spectroscop... ▽ More We present 151 planet candidates orbiting 141 stars from K2 campaigns 5 - 8 (C5 - C8), identified through a systematic search of K2 photometry.

The focus from AAVSO will be V - band photometry for the active star Ross 154; we are targeting round - the - clock coverage to disentangle stellar activity from possible exoplanet detections.

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

The presence of a second, non-transiting planet was inferred from the transit time variations (TTVs) of Kepler - 19b, over 8 quarters of Kepler photometry, although neither mas... ▽ More We report a detailed characterization of the Kepler - 19 system.

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.

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

The presence of a second, non-transiting planet was inferred from the transit time variations (TTVs) of Kepler - 19b, over 8 quarters of Kepler photometry, although neither mass nor period could be determined.

Abstract: We present 151 planet candidates orbiting 141 stars from K2 campaigns 5 - 8 (C5 - C8), identified through a systematic search of K2 photometry.

This version adds Gaia DR1 photometry, updated PS1 astrometry, parallaxes from Liu et al (2016), comparisons to proper motions from the MoVeRS and LaTE - MoVeRS catalogs, more discussion of binaries, and minor adjustments to catalog membership.

From the Kepler photometry, we estimate a stellar rotation period of 36 days, which implies a stellar age of > 1 Gyr.

We combine the estimate of Teff and [Fe / H] with an estimate o... ▽ More We present the discovery of the Kepler - 19 planetary system, which we first identified from a 9.3 - day periodic transit signal in the Kepler photometry.

Our followup spectroscopy has identified two new companions as well as confirmed two companions previously identified from photometry, with spectral types of M7.5 - M9 and masses of ~ 15 - 60 Mjup, indicating a frequency for such wide substellar companions of ~ 0.6 + / -0.3 %.

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.

Abstract: We present the discovery of the Kepler - 19 planetary system, which we first identified from a 9.3 - day periodic transit signal in the Kepler photometry.

The results are the first from The Kepler Cluster Study which combine Kepler's photometry with ground - based spectroscopy for cluster membership and binarity.

Dynamical masses, absolute radii and 3D orbits of the triply eclipsing star HD 181068 from Kepler photometry

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 obtain a R = 30 spectrum from 0.95 to 1.64 micron of the companion and additional photometry at 2.11 and 2.25 micron.

The data returned from Kepler are unique in terms of the number of stars observed, precision of photometry for time series observations, and the temporal extent of high duty cycle observations.

TrES - 5 orbits one of the faintest stars with transiting planets found to date from the ground and demonstrates that precise photometry and followup spectroscopy are possible, albeit challenging, even for such faint stars.

From high - resolution spectroscopy of the star we estimate a stellar effective temperature of Teff = 6100 + / - 150 K, and from high - precision z and B photometry of the transit we constrain the ratio of the semi-major axis and the stellar radius to be a / R = 6.03 + / - 0From high - resolution spectroscopy of the star we estimate a stellar effective temperature of Teff = 6100 + / - 150 K, and from high - precision z and B photometry of the transit we constrain the ratio of the semi-major axis and the stellar radius to be a / R = 6.03 + / - 0from high - precision z and B photometry of the transit we constrain the ratio of the semi-major axis and the stellar radius to be a / R = 6.03 + / - 0.13.

Abstract: The Kepler Mission relies on precise differential photometry to detect the 80 parts per million (ppm) signal from an Earth - Sun equivalent transit.

Asteroseismology of the open clusters NGC 6791, NGC 6811, and NGC 6819 from nineteen months of Kepler photometry

Dedicated spectroscopy earlier this year confirmed the binary nature, the orbit period from photometry, and that the «heartbeat» is caused by the periastron brightening of the system.

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.

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, asteroseismology, and exoplanet transits), which were then homogeneously fitted to a grid of Dartmouth stellar isochrones.

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.

Physical properties of the planetary systems WASP - 45 and WASP - 46 from simultaneous multi-band photometry

Batalha is responsible for the selection of the more than 150,000 stars the spacecraft monitors and works closely with team members at Ames to identify viable planet candidates from Kepler photometry.