Sentences with phrase «radial velocity detection»

We believe this was the first radial velocity detection of an extrasolar planet by amateurs.

The Hatzes paper is «Radial Velocity Detection of Earth - Mass Planets in the Presence of Activity Noise: The Case of α Centauri Bb», The Astrophysical Journal, Vol.

Not exact matches

Instead of becoming an Earth - shattering revelation, serious doubts were cast on the detection, which also used radial velocity.

«Results from the three main techniques of planet detection (radial velocity, transit and microlensing techniques) are rapidly converging to a common result: Not only are planets common in the galaxy, but there are more small planets than large ones,» said Stephen Kane, of NASA's Exoplanet Science Institute at the California Institute of Technology, Pasadena, Calif. «This is encouraging news for investigations into habitable planets.»

The planet is confirmed via both the detection of the radial velocity orbit, and the Doppler tomographic detection of the shadow of the planet over two transits.

On November 1, 2010, a team of astronomers working with the NASA - UC Eta - Earth Survey revealed the detection of a super-Earth in a torch orbit with a minimum of 8.2 + - 1.2 Earth - masses around BD +26 2184, using radial - velocity measures from the Keck Observatory's High Resolution Echelle Spectrometer (HIRES).

The planet is confirmed via both the detection of the radial velocity orbit, and the Doppler tomographic detection of the sha... ▽ More We present the discovery of a hot - Jupiter transiting the V = 9.23 mag main - sequence A-star KELT - 17 (BD +14 1881).

This technology, when coupled with a high spectral resolution spectrograph, offers the promise of $ < $ 1 m / s radial velocity precision suitable for the detection of Earth - sized planets in the habitable zones of cool M - type stars.

If you are new to this saga make sure you read Tau II Abstract: The successful detection is reported of radial - velocity variations due to orbital motion of the substellar companion of the star tau Boötis, from data obtained with a small aperture (0.4 - m) telescope and a fibre - fed high resolution spectrograph.

[109] The observational thresholds for planet detection in the habitable zones via the radial velocity method are currently (2017) estimated to be about 50 M ⊕ for Alpha Centauri A, 8 M ⊕ for B, and 0.5 M ⊕ for Proxima.

Finally, there is the exoplanet detection by the method of radial velocity.

As CORVAL monitoring failed to detect significant radial velocity variations over period of 3,400 days — or over 9.3 years (Duquennoy and Mayor, 1991, pp. 492 and 506), the detection is now considered to be spurious.

Furthermore, gravitational microlensing can complement other exoplanet detection techniques like radial velocity and the transit method, which are limited in discovering mostly massive planets in relatively close orbits around their host stars.

The various detection techniques such as radial velocities, transit, microlensing, direct imaging, timing or astrometry, provided thousands of planet detections.

With only 15 habitable zone rocky planets to work with, the authors caution that their results may be dominated by the detection biases of the radial velocity and transit surveys.

Their high mass leads to easier radial velocity and microlensing observations, and their large size and young warmer temperatures lead to easier transiting and direct imaging detections.

The transit method, the radial velocity method, and the transit timing variation method are also indirect detection methods.

Detection limits are knowing exactly how small a signal (radial velocity, microlensing, or imaging) can be and still be reliably detected by each instrument.

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.