Sentences with phrase «type stars»

Therefore, most of the soft sources are probably X-ray active nearby late type stars.

This list contains every G - type star within 50 light years.

Some Sol - type stars of spectral class F8 to G8 have been found have been observed to produce «superflares» that release between 100 and 10 million times more energy than the largest flares were observed on the sun.

The slash stars are O - type stars with WN - like lines in their spectra.

About 20 years have passed now since the discovery of the first extrasolar planet orbiting a solar type star in 1995.

He demonstrated that the distribution of stars by mass has the shape of a power law with exponent of -2.35, i.e. the stars 10 times massive than our Sunare102.35 = 220times less frequent then Solar type stars.

The M - type stars appear to have a normal (i.e., solar) makeup, with oxygen more abundant than carbon and the zirconium group of elements much less abundant than the titanium group.

Once thought to be old Population II, galactic - halo - type subdwarf stars, Zeta1 and its companion are more likely to be old disk stars (Da Silva and Foy, 1987), that may be as much as eight billion years old, but more recent analysis of chromospheric activity and rotation with spectral analysis and calibration with other Sol - type stars suggest that the two stars could be as young as 1.5 to three billion years old (Mamajek and Hillenbrand, 2008, Table 13).

In addition, there appears to be a spectral type / mass dependence associated with the presence of a passive disk, with all passive disks occurring around M type stars.

We have developed rotational evolution models for slow and fast solar - type rotators from th... ▽ More 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 present Herschel PACS 100 and 160 micron observations of the solar - type stars alpha Men, HD 88230 and HD 210277, which form part of the FGK stars sample of the Herschel Open Time Key Programme (OTKP) DUNES (DUst around NEarby S tars).

O - type stars likely form from the densest parts of the nebular clouds like RCW 106 and they are notoriously difficult to study.

«Yes, the sun is an ordinary, solar - type star after all.»

Early - type stars emit mostly UV light, so this corresponds to yearly shifts of up to 80 per cent in the UV radiation hitting the planet.

Sallie Baliunas at the Harvard - Smithsonian Center for Astrophysics says many solar - type stars pass through extended quiescent periods, during which they become nearly 1 percent dimmer.

But a new survey of stellar chemistry in solar - type stars reveals at least one way that pip - squeak planets can strike back, affecting the evolution of their parent stars.

Kepler - 78b orbits a Sun - like G - type star located 400 light - years from Earth in the constellation Cygnus.

«We will be targeting mainly G - type stars similar to the Sun,» said Stassun.

On October 6, 2005, a team of astronomers announced the discovery of a «hot Jupiter» that transits Sol - type Star A (Observatoire de Genève's page on HD 189733 — more below).

The superabundant elements in the S - type stars come from the slow neutron process.

A promising exoplanet candidate was detected around the K2 - type star HD \, 8049 in July 2010.

On January 7, 2002, astronomers announced the discovery of a brown dwarf companion to this Sol - type star using direct imaging (see press release and graphics), whose mass and orbit were subsequently refined with 24 years of radial - velocity observations — Crepp et al, 2012, with more details below).

Also located near the Pistol Star and Nebula is the two - million - years - old, compact Arches Cluster which contains as many as 150 O - type stars alone (more from Chandra X-Ray Observatory and STScI).

O - type stars frequently have complicated surroundings that make measurement of their spectra difficult.

Thus, L - type stars larger than dwarfs can never form in an isolated environment.

Because it covers more of the sky, the K2 mission is capable of observing a larger fraction of cooler, smaller, red - dwarf type stars, and because such stars are much more common in the Milky Way than Sun - like stars, nearby stars will predominantly be red dwarfs.

Another subset of cool carbon stars are the C - J type stars, which are characterized by the strong presence of molecules of 13CN in addition to those of 12CN.

We also find that the K - band excess in FGK - type stars correlates with the existence of an outer reservoir of cold ($ \ lesssim 100 \, $ K) dust at the $ 99 \ % $ confidence level, while the same can not be said for A-type stars.

and M - type stars suitable for high - precision Doppler observations at the Keck Observatory.

Scizor is the Steel - type star because of powerful Bug - type attacks like Fury Cutter and X-Scissor.

I liked games like the original FF's, the pixel type star oceans and Tales of games, Lufia's, Paladin Quest's, Inindo's, and so on.

It is a New Suspected Variable star designated NSV 1100, and observations announced in 1998 suggest that Kappa Ceti emits a new gargantuan class of stellar mass ejection associated recently with Sol - type stars of spectral class F8 to G8 called a «superflare» (Schaefer et al, 2000).

With a surface temperature of over 50 000 degrees, HD 93129Aa is one of the hottest O - type stars in the entire Milky Way.

For the final catalog, the team focused on teasing out Earth - sized planets around G - type stars like our sun.

While Hydrogen Cyanide could be detected around 30 percent of 44 yellowish Sol - type stars observed, none was detected around 17 red dwarf stars and brown dwarfs although acetylene could be detected in the dust disks of these cooler stars and sub-stellar objects (more).

As mentioned above, Zeta2 is thought to be an old disk star, but more recent analysis of chromospheric activity and rotation with spectral analysis and calibration with other Sol - type stars suggest that the two stars could be as young as 1.5 to three billion years old (Eiroa et al, 2010; and Mamajek and Hillenbrand, 2008, Table 13)..

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).

It is a variable carbon star, which is to say a late type star that resembles a red giant (or less frequently a red dwarf), that has an atmosphere with more carbon than oxygen.