Sentences with phrase «exoplanet host stars»

This is one of the brightest (V = 9.4) Kepler exoplanet host stars, containing a small (2.8 Rearth) transiting planet in a long orbit (17.8 days), and one or more additional non-transiting planets as indicated by transit timing variations.

This is one... ▽ More We describe three useful applications of asteroseismology in the context of exoplanet science: (1) the detailed characterisation of exoplanet host stars; (2) the measurement of stellar inclinations; and (3) the determination of orbital eccentricity from transit duration making use of asteroseismic stellar densities.

Interestingly, the last two are known exoplanet host stars.

The timescale for giant planet formation: constraints from the rotational evolution of exoplanet host stars

We conclude that lithium - depleted exoplanet host stars were slow rotators on the zero - age main sequence (ZAMS) and argue that slow rotation results from a long lasting star - disk interaction during the PMS.

We present here new constraints on planet formation timescales derived from the rotational evolution of exoplanet host stars.

Abstract: Israelian et al. (2004) reported that exoplanet host stars are lithium depleted compared to solar - type stars without detected massive planets, a result recently confirmed by Gonzalez (2008).

Abstract: We explore the multiplicity of exoplanet host stars with high - resolution images obtained with VLT / SPHERE.

We discuss possible systematic errors in the derived stellar properties, and differences to published classifications for K2 exoplanet host stars.

Discovery of Late - Type Companions to Two Exoplanet Host Stars] Our galaxy contains hundreds of billions of stars, and astronomers suspect planets accompany almost all of them.

Lyra chose monikers associated with the myths of the exoplanet host star's constellation.

Not exact matches

[1] Most of the exoplanets currently known were discovered using indirect techniques — such as radial velocity variations of the host star, or the dip in brightness of the star caused by a transiting exoplanet.

To measure the albedo of WASP - 12b the scientists observed the exoplanet in October 2016 during an eclipse, when the planet was near full phase and passed behind its host star for a time.

Astronomers believe that the exoplanets, called NN Ser (ab) c and d, may have survived a cataclysmic event several million years ago, when one of their host stars swelled to 200 times the diameter of the sun, temporarily enveloping the planets.

During a transit, light from a host star filters through the atmosphere of an exoplanet before being eclipsed by the planet's opaque bulk.

To find an exoplanet's atmosphere, a telescope would record the spectral signature when the planet transits in front of its host star and again when it's behind.

This story appears in the June 24, 2017, issue of Science News with the headline, «The opportunity zone: Exoplanets found in a narrow band around M dwarf stars could host a very different kind of life.»

These transits can be found by registering dips in light caused by the shadow of an exoplanet as it crosses in front of its host star.

«NameExoWorlds: A contest to name exoplanets and their host stars.»

If a few key characteristics such as an exoplanet's topography and rotation rate are just right, then the inner edge of the habitable zone — the region in a solar system where conditions conducive to life can arise — will be closer to the host star than is usually thought.

And as a result of this never - before - used orbit — advanced and fine - tuned by NASA engineers and other members of the Transiting Exoplanet Survey Satellite (TESS) team — the Explorer mission led by Ricker will be perfectly positioned to map the locations of more than 500 transiting exoplanets, extrasolar planets that periodically eclipse each one's host star.

Previous sky surveys with ground - based telescopes have mainly detected giant planets, while NASA's Kepler observatory has uncovered the existence of many smaller exoplanets, but their host stars are faint and difficult to study.

The rapid rate of discovery of exoplanets can be attributed to the maturity of Doppler spectroscopy, by which astronomers measure a planet's gravitational tug on its host star, and by a technique involving «transiting» planets — looking for planets that move between their host stars and Earth, the method used by Mandushev to find TrES - 4.

Now, graduate students at the University of Washington have found a way to detect volcanic activity in the atmospheres of exoplanets, or those outside our solar system, when they transit, or pass in front of their host stars.

Astronomers have confirmed nearly 2000 exoplanets so far, and the evidence suggest many stars host multiple planets, just like our own solar system.

This exoplanet might be able to host life because of its unusually calm star

As the exoplanet passes in front of its host star, as seen from Earth, some of this starlight travels through the planet's outer atmosphere.

The host star of the latest exoplanet, HATS - 6, is classed as an M - dwarf, which is one of the most numerous types of stars in galaxy.

Exoplanet WASP - 12b closely orbits its host star, possibly creating a shock wave as it plows through the stellar wind.

Researchers have discovered an Earth - sized exoplanet named Kepler 78b that whips around its host star in a mere 8.5 hours — one of the shortest orbital periods ever detected.

Researchers at MIT have discovered an Earth - sized exoplanet named Kepler 78b that whips around its host star in a mere 8.5 hours — one of the shortest orbital periods ever detected.

By analyzing the movement of its host star, Kepler 78, the scientists determined that the exoplanet is about 1.7 times as massive as Earth.

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.

It will observe how exoplanets in other solar systems pass in front of their host star - and assist in the search of potentially habitable planets.

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.

This decreases slightly when an exoplanet passes in front of its host star.

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.

The exoplanet, which is about six times the size of Earth, or about 50 percent larger than Neptune, makes a complete orbit around its host star in about five days.

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).

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

Illustration of NASA's Transiting Exoplanet Survey Satellite — TESS — in front of a lava planet orbiting its host star.

The authors focus on M - dwarf stars, whose surfaces are poorly understood and which commonly host rocky exoplanets.

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.

Discoveries of Sun - like stars with host exoplanets as well as red dwarf companions have been common, and many appear to be old and stable enough for life to have evolved (RAS new releases of April 16 and April 19, 2011; and University of St. Andrews press release).

This exoplanet orbits a Sun - like host star.

Also, the method can detect exoplanets as small as Mercury and exoplanets orbiting as far from their host star as Saturn orbits the sun.

«The TESS legacy will be a catalog of the nearest and brightest main - sequence stars hosting transiting exoplanets, which will forever be the most favorable targets for detailed investigations,» added Ricker.

With this technique, we record spectra of the host star during an exoplanet transit.

Tidal interactions between close - in, gas - giant exoplanets and their host star should cause the orbits of the planets to decay.

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.