Sentences with phrase «host stars»

The atmospheres of hot super-Earths are being stripped off by nearby host stars, a new study has found.

Through N - body calculations, I will show that if hot Jupiters migrated by Lidov - Kozai oscillations driven by external planetary perturbers, close - in super-Earth companions would have been perturbed onto their host stars.

The heat emitted by this radiation causes the so - called planetary envelopes to be blown away, especially because the planets are so close to their host stars.

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 process is based on probability and focuses on host stars that have multiple planet candidates.

Characterizing K2 Candidate Planetary Systems Orbiting Low - Mass Stars I: Classifying Low - mass Host Stars Observed During Campaigns 1 - 7

KELT - 3b is the third transiting exoplanet discovered by the KELT survey, and is orbiting one of the 20 brightest known transiting planet host stars, making it a promising candidate for detailed characterization studies.

We highlight new PCs that are both potentially rocky and potentially in the habitable zone of their host stars, many of which orbit solar - type stars.

It will aid scientists in finding the properties of host stars, their radii and masses, as well as in identifying the specific properties that make surrounding exoplanets habitable.

We precisely characterized the host stars with adaptive optics imaging and analysis... ▽ More We present a catalog of 11 multi-planet systems from Campaigns 1 and 2 of the K2 mission.

Emphasis was placed on identification of Earth - size planets orbiting in the Habitable Zone of their host stars.

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.

While Kepler has provided a massive amount of data, including 3,000 planet candidates, the next step is sorting through the findings to learn more about the host stars and the orbiting planets.

Scientists from the University of Birmingham used data from NASA's Kepler telescope to observe a sample of exoplanets and the effects of their host stars to their respective atmospheres.

The discovery of 54 Piscium b indicates that the highly elliptical orbits of close - in planets found around other stars could be the result of orbital perturbations by low - mass companions at wide separations from their host stars (more).

Kepler is back to mining the cosmos for planets by searching for eclipses, or transits, as planets orbit in front of their host stars and periodically block some of the starlight.

The vortex coronagraph has the potential to image planetary systems and brown dwarfs closer to their host stars than was possible previously.

Planets are small and faint compared to their host stars; only a few have been observed directly outside our solar system.

The first method detects planets by the subtle gravitational tug they give to their host stars.

Most importantly, the bolometric fluxes and angular radii reported here for a total of 498 planet host stars - with median accuracies of 1.7 % and 1.8 %, respectively - serve as a fundamental dataset to permit the re-determination of transiting planet radii and masses with the Gaia second data release to ~ 3 % and ~ 5 % accuracy, better than currently published precisions, and determined in an entirely empirical fashion.

We obtained follow - up optical spectra of 105/141 candidate host stars and 8/16 eclipsing binaries to improve stellar properties and to identify spectroscopic binaries.

With a larger sample, planets at varying stages of atmospheric loss will be found that confirm whether or not the majority of close in rocky planets are the burnt embers leftover of gas giants who ventured to close to their host stars.

The host stars are relatively bright (most have $ Kp < 12.5 $ mag) and are amenable to follow - up characterization.

Preferred Hosts for Short - Period Exoplanets In an effort to learn more about how planets form around their host stars, a team of scientists has analyzed the population of Kepler - discovered exoplanet candidates, looking for trends in where they're found.

Planets are so faint and tiny compared to their host stars that it is remarkable we can detect them at all, let alone study their atmospheres.

But misinterpreting the color of planets based on misunderstanding their host stars» light?

Just as I mistook a green sweater for gray by mistaking yellowish indoor light for white, we may end up interpreting planet spectra wrongly by misunderstanding the spectral colors of their host stars.

Hot Jupiters are exoplanets that are physically similar to Jupiter, but are strongly irradiated by their host stars.

based on misunderstanding their host stars» light?

The study builds on input from the exoplanet community to identify the most interesting science questions that we may be able to study in the future with direct imaging missions — that is, space telescopes that can directly image exoplanets (separating their light from that of their host stars).

«The Keck and Hubble telescopes allow us to detect these faint planetary host stars and determine their properties.»

Like the currently operational Kepler Space Telescope, TESS will be in the lookout for exoplanets that orbit in front of their host stars, resulting in a slight dip in starlight.

Hot Jupiters - One of the most surprising findings thus far is the detection of giant, Jupiter - class planets in orbits very close to their host stars (three within the range of tidal interaction with their stars).

The large majority of exoplanets cataloged so far are very close to their host stars because several current planet - hunting techniques favor finding planets in short - period orbits.

In fact, microlensing is such a powerful tool that it can uncover planets whose host stars can not be seen by most telescopes.

Several Earth - like planets and super-Earths have been detected in the habitable zones of their host stars and more than 2300 planetary candidates have been announced.

«These «hot Jupiters» could not have formed in situ, given the large stellar tidal gravity and radiation fields close to their host stars.

The transit zone is rich in host stars for planetary systems, offering approximately 100,000 potential targets, each potentially orbited by habitable planets and moons, the scientists say — and that's just the number we can see with today's radio telescope technologies.

Habitable Earth - size planets might turn up sooner around smaller, cooler stars in Kepler's field of view, where water could persist on closer - orbiting planets that would complete laps around their host stars more quickly.

See the AAS press conference featuring Marshall Perrin speaking about Gemini Planet Imager results at: http://aas.org/media-press/archived-aas-press-conference-webcasts Click on the «Exoplanet & Host Stars II» session, Perrin is the final speaker in the session.

«This indicates that planets around metal - poor host stars are less dense than rocky planets of comparable size around more metal - rich host stars like the Sun», explains Claude «Trey» Mack, project scientist for the Kepler - 444 observation.

«We determined the weather on these alien worlds by measuring changes as the planets circle their host stars, and identifying the day - night cycle,» said Lisa Esteves, a PhD candidate in the Department of Astronomy & Astrophysics at the University of Toronto, and lead author of the study published today in The Astrophysical Journal.

With this method, planets that pass in front of their host stars block out some of the starlight causing the star to dim slightly for a few hours.

It is unfortunate, then, that some of the easiest planets to detect are the so - called hot Jupiters: massive bodies hugging tight to their host stars and therefore subject to extremely high (and probably life - negating) temperatures.

And radial velocity searches, which look for Doppler shifts in a star's light as it wobbles under the influence of an orbiting companion, are more attuned to massive planets that induce greater gravitational wobbles in their host stars.

It was looking for planetary «transits,» in which fortuitously aligned worlds cross the face of their host stars and block a fraction of the starlight seen from Earth.

The five planets are hot Jupiters, massive worlds that orbit close to their host stars.

Most were detected by the wobbles they induce in their host stars or by the starlight they block as they pass in front of their stars as seen from Earth.

«Only microlensing can detect these cold ice giants that, like Uranus and Neptune, are far away from their host stars.

What is more, improved technology should also allow larger observatories such as Keck to move from the few giant planets already imaged — all of which orbit their host stars at relatively large distances — to closer - in worlds more like our own.