Sentences with phrase «with planetary companions»

We first generate a stellar field with planetary companions based on radial velocity discoveries, use a planetary evolution model assuming a variable fraction of heavy elements to compute the characteristics of transit events, then apply a detection criterion that includes both statistical and red noise sources.

Older worlds with planetary companions may be the place to find the most ancient life in the galaxy, according to a new study.

In all, the team found 17 candidate brown dwarf companions to red dwarf stars, one brown dwarf pair, and one brown dwarf with a planetary companion.

Detailed modeling of the transit is consistent with a planetary companion with an orbital period of 3.548460 + / -0.000032 days and a radius of 1.431 + / -0.050 Rj.

Not exact matches

In this two - hour PBS special (a fine companion to The Life of Super-Earths), NOVA combines cutting - edge planetary science with the thrill of human exploration, putting astronomers and astrobiologists «on location» across the solar system as they explain the scientific search for life on other worlds.

On January 16, 2002, a team of astronomers (including (Debra A. Fischer, Geoffrey W. Marcy, R. Paul Butler, Steven S. Vogt, and Gregory W. Henry) announced the discovery of a planetary companion «b,» whose mass has been estimated at a minimum of 20 percent that of Jupiter (exoplanets.org; and Fischer et al, 2003, in pdf) with a similar diameter.

Abstract: In recent years there have been many attempts to characterize the occurrence of stellar, BD and planetary - mass companions to solar - type stars, with the aim of constraining formation mechanisms.

Assuming that the spectroscopic companion B does not preclude a stable inner planetary orbit, the distance from Star A where an Earth - type planet would be «comfortable» with liquid water is centered around only 0.457 AU — between the orbital distances of Mercury and Venus in the Solar System.

David Aguilar, Harvard - Smithsonian Center for Astrophysics — larger «day» and «night» images At maximum brightness, Mira would light up a hypothetical planetary companion, but at its most dark, the giant star's small, hot white dwarf companion would become visible (more discussion with illustration).

On the other hand, the discovery of a brown dwarf companion in a wide orbit that could perturb dormant comets in an Oort Cloud around Epsilon Indi inwards towards the star's inner planetary regions may periodically shower an Earth - type, inner planet with catastrophic impacts.

H. Bond (STSci), R. Ciardullo (PSU), WFPC2, HST, NASA HD 147513 B is a young white dwarf (a remnant stellar core which enriched its binary companion, Star A) with elements heavier than hydrogen when it cast off its outer gas layers) like planetary nebula NGC 2440.

However, if the existence of a relatively close, second companion (see Star Bc below) around Bab — with an orbital period of 2.2 to 2.9 years or less — is confirmed, then a planetary orbit in Star Ba's water zone may not be stable over the long run.

On September 24, 2002, a team of astronomers (including William D. Cochran, Artie P. Hatzes, Michael Endl, Diane B. Paulson, Gordon A. H. Walker, Barbara McArthur, Bruce Campbell, and Stephenson Yang) at the Planetary Systems and their Formation Workshop announced the preliminary confirmation of a long - suspected planetary companion «A1» (or «b») with a minimum mass of 1.76 that of Jupiter (MacDonald Observatory's Gamma Cephei and press release; Tautenburg Observatory press release in German; DPS session summary; Walker et al, 1992; Lawton and Wright, 1989; and Campbell et al, 1988), with a similar Planetary Systems and their Formation Workshop announced the preliminary confirmation of a long - suspected planetary companion «A1» (or «b») with a minimum mass of 1.76 that of Jupiter (MacDonald Observatory's Gamma Cephei and press release; Tautenburg Observatory press release in German; DPS session summary; Walker et al, 1992; Lawton and Wright, 1989; and Campbell et al, 1988), with a similar planetary companion «A1» (or «b») with a minimum mass of 1.76 that of Jupiter (MacDonald Observatory's Gamma Cephei and press release; Tautenburg Observatory press release in German; DPS session summary; Walker et al, 1992; Lawton and Wright, 1989; and Campbell et al, 1988), with a similar diameter.

Researchers using data from Hubble's now - retired Wide Field Planetary Camera 2 (WFPC2) have identified two types of blue stragglers in Messier 30: those that form in near head - on collisions with one another and those that are in twin (or binary) systems where the less massive star siphons «life - giving» hydrogen from its more massive companion.