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The Multi-object APO Radial Velocity Exoplanet Large-area Survey (MARVELS)
is a ground-based Doppler
-Doppler effect and its applications:* Doppler effect* Doppler beaming* Doppler broadening* Doppler cooling** Doppler cooling limit* Doppler echocardiography** Doppler ultrasound, also called Doppler sonography** Transcranial doppler* Doppler fetal monitor...
survey of 11,000 of the brightest stars. The project will use the SDSS telescope and new multi-object Doppler instruments to monitor radial velocities. It is one of four astronomical surveys conducted by SDSS-III, part of the Sloan Digital Sky Survey (SDSS).
The main goal of the project is to generate a large-scale, statistically well-defined sample of giant planets. It will search for gaseous planets that have orbital periods ranging from hours to 2 years, and are between 0.5 and 10 Jupiter
Jupiter is the fifth planet from the Sun and the largest planet within the Solar System. It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined. Jupiter is classified as a gas giant along with Saturn,...
masses. A total of 11,000 stars will be analyzed with 25-35 observations per star over an 18 month period. It is expected to detect between 150 and 200 new exoplanets, and will be able to study rare systems, such as planets with extreme eccentricity, and objects in the "brown dwarf desert".
The collected data will be used as a statistical sample for the theoretical comparison and discovery of rare systems.
The project started in the fall of 2008, and will continue until spring 2014.
The other components of SDSS-III are:
- Apache Point Observatory Galactic Evolution Experiment
The Apache Point Observatory Galactic Evolution Experiment is an astronomical survey established to study 100,000 red giant stars encompassing the entire galactic bulge, bar, disk, and halo. It will use high-resolution, high signal-to-noise infrared spectroscopy...
- Baryon Oscillation Spectroscopic Survey
The Baryon Oscillation Spectroscopic Survey is an astronomical survey designed to measure the expansion rate of the Universe.It will focus on luminous red galaxies and quasars, mapping the spatial distribution....
- Sloan Extension for Galactic Understanding and Exploration 2
The Sloan Extension for Galactic Understanding and Exploration 2 is an astronomical survey designed to map the outer reaches of the Milky Way with a spectra of 240,000 stars...