论文信息 - A new generation multi-object Doppler instrument for the SDSS-III Multi-object APO Radial Velocity Exoplanet Large-area Survey

A new generation multi-object Doppler instrument for the SDSS-III Multi-object APO Radial Velocity Exoplanet Large-area Survey

We report performance of a new generation multi-object Doppler instrument for the on-going Multi-object APO Radial-velocity Exoplanet Large-area Survey (MARVELS) of the Sloan Digital Sky Survey III (SDSS-III) program. This instrument is based on dispersed fixed-delay interferomtry design. It consists of a multi-object fiber-feed, a thermally compensated monolithic fixed-delay interferometer, a high throughput spectrograph and a 4kx4k CCD camera. The spectrograph resolving power is R=11,000 and the wavelength coverage is 500-570 nm. The instrument is capable of measuring 60 stars in a single exposure for high to moderate precision radial velocity (3-20 m/s) measurements depending on the star magnitudes (V=7.6-12). The instrument was commissioned at the SDSS telescope in September 2008 and used to collect science data starting in October 2008. Observations of reference stars show that the measured photon noise limiting errors are consistent with the prediction for most of the measurements.

[1] Yann Alibert,et al. On the Volatile Enrichments and Composition of Jupiter , 2005, astro-ph/0502325.

[2] Andrzej Niedzielski,et al. A HET search for planets around evolved stars , 2007, Proceedings of the International Astronomical Union.

[3] Willy Benz,et al. Giant Planet Formation by Core Accretion , 2007 .

[4] Jian Ge,et al. Fixed Delay Interferometry for Doppler Extrasolar Planet Detection , 2002, astro-ph/0204271.

[5] Alan P. Boss,et al. Giant Planet Formation by Gravitational Instability , 1997 .

[6] Willy Benz,et al. Giant planet population synthesis: comparing theory with observations , 2008 .

[7] D Erskine,et al. Novel interferometer spectrometer for sensitive stellar radial velocimetry , 1999 .

[8] Shigeru Ida,et al. Toward a Deterministic Model of Planetary Formation. II. The Formation and Retention of Gas Giant Planets around Stars with a Range of Metallicities , 2004, astro-ph/0408019.

[9] David J. Erskine,et al. An Externally Dispersed Interferometer for Sensitive Doppler Extrasolar Planet Searches , 2002 .

[10] D. Lin,et al. Toward a Deterministic Model of Planetary Formation. I. A Desert in the Mass and Semimajor Axis Distributions of Extrasolar Planets , 2004 .

[11] Ken Rice,et al. Gravitational Instabilities in Gaseous Protoplanetary Disks and Implications for Giant Planet Formation , 2006, astro-ph/0603179.