Sentences with phrase «photometry of»

The success of the photoelectric photometry of asteroids with the buoyant interest in visual work encouraged Council to create a new Section so, in June 1984, the Minor Planets Section was formed with Andrew Hollis as Director and Richard Miles as Assistant Director.

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 + / - 0.13.

Follow - up radial velocity measurements with th... ▽ More We present 44 days of high duty cycle, ultra precise photometry of the 13th magnitude star Kepler - 5 (KIC 8191672, Teff = 6300 K, logg = 4.1), which exhibits periodic transits with a depth of 0.7 %.

We present new X-ray observations, optical spectroscopy, near - IR interferometry, and mid-IR photometry of this system to constrain its parameters and further explore the cause of the dust mass loss.

In this paper (paper IV), we compare the available spectra and photometry of the planets to known objects and atmospheric models (BT - SETTL14, Cloud - AE60, Exo - REM) to characterize the atmospheric properties of the planets.

We recently obtained new photometry of the four planets and low - resolution (R ~ 30) spectra of HR8799 d and e with the SPHERE instrument (paper III).

No known object reproduces well the properties of planets b and c. Nevertheless, we find that the spectra and WISE photometry of peculiar and / or young early - T dwarfs reddened by submicron grains made of corundum, iron, enstatite, or forsterite successfully reproduce the SED of these two planets.

Up to 10 data points could be obtained for Barnard's star on some selected nights, but a lot of scatter appears in the photometry of the last 2 weeks, probably due to the non-photometric conditions.

«Multicolour UBVRI photometry of stars in M 17», Astronomy and Astrophysics, Vol.

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

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.

Multiwaveband photometry of the irradiated brown dwarf WD0137 — 349B.

Not exact matches

To find an Earth, you'd better have photometry that's unassailable at the one - hundredth of 1 percent level.

«William Borucki, of the NASA Ames Research Center in Mountain View, California,» won the astronomy prize for «conceiving the observational technique of transit photometry that raised the tantalizing prospect of sighting Earth - like planets orbiting other stars, and [for] leading the 25 - year - long development of the Kepler mission.»

Called photometry, it detects the slight but regular dimming in a star's light when a planet transits in front of it.

The Physikalisch - Technische Bundesanstalt (PTB) has now developed a mathematical procedure which yields clearly improved results and can be applied in numerous fields of radiometry and photometry.

William Borucki, of the NASA Ames Research Center in Mountain View, California, has captured the astronomy prize for two achievements: conceiving the observational technique of transit photometry that raised the tantalizing prospect of sighting Earth - like planets orbiting other stars, and leading the 25 - year - long development of the Kepler mission, which in 2009 placed a telescope in space to make those observations.

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.

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.)

Research interests: the design, construction, and operation of robotic telescopes in support of automated astronomy, the development of automated high - precision photometry

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

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).

Our longest... ▽ More We present a preliminary analysis of the cool pulsating white dwarf GD 1212, enabled by more than 11.5 days of space - based photometry obtained during an engineering test of the two - reaction - wheel - controlled Kepler spacecraft.

PSO J060.3200 +25.9644 (a.k.a. DANCe J040116.80 +255752.2) was previously identified as a likely member of the Pleiades (age $ \ approx125 $ Myr) based on photometry and astrometry, but its VL - G gravity classification and near - infrared photometry imply a much younger age and thus point to Taurus membership.

Revising the properties of the associated planet candidates based on the updated host star characteristics and refitting the transit photometry, we find that our sample contains 20 planets or planet candidates with radii smaller than 1.25 Earth radii, 20 super-Earths (1.25 - 2 Earth radii), 20 small Neptunes (2 - 4 Earth radii), three large Neptunes (4 - 6 Earth radii), and eight giant planets (> 6 Earth radii).

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.

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.

This unique and unprecedented coverage is the first time that a nova has any substantial amount of fast photometry.

This brings the total number of KOIs and planet... ▽ More \ We present the sixth catalog of Kepler candidate planets based on nearly 4 years of high precision photometry.

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.

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

For most of the candidates (85 %), the transit depths measured with Kepler are consistent with the depths measured with Spitzer as expected for planetary objects, while we find that the most discrepant measurements are due to the presence of unresolved stars that dilute the photometry.

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.

The planets are mostly smaller than Neptune (21/26 planets) as in the Kepler mission and all have short periods ($ P < 50 $ d) due to the duration of the K2 photometry.

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.

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

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.

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

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.

Abstract: \ We present the sixth catalog of Kepler candidate planets based on nearly 4 years of high precision photometry.

Although AIJ maintains the general purpose image processing capabilities of ImageJ, AIJ is streamlined for time - series differential photometry, light curve detrending and fitting, and light curve plotting, especially for applications requiring ultra-precise light curves (e.g., exoplanet transits).

The Ecliptic Plane Input Catalog (EPIC) provides coordinates, photometry and kinematics based on a federation of all - sky catalogs to support target selection and target management for the K2 mission.

We identified the initial transit signal in the KELT - North survey data and established the planetary nature of the companion through precise follow - up photometry, high - resolution spectroscopy, precise radial velocity measurements, and high - resolution adaptive optics imaging.

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.