Photometric Precision for the Transiting Exoplanet
نویسنده
چکیده
We seek to fully characterize all noise contributions along the CCD and electronics signal path specific to the equipment to be used on board the TESS all-sky space observatory. We adjust physical variables in such a way as to minimize this noise and achieve a photometric precision limited in large part by shot noise. Ultimately, the goal is to demonstrate in the lab, by analyzing photon data generated by LED simulated stars and using relative photometric techniques, that TESS CCDs and electronics are capable of performing photometry at the 100ppm (parts per million) level as required by the goals of the space mission. In our investigation, we are limited by unusually high readout noise in the CCD electronics but still able to achieve reliable sub-200ppm level photometry in the lab.
منابع مشابه
ELODIE metallicity - biased search for transiting Hot Jupiters ⋆ II . A very hot Jupiter transiting the bright K star HD 189733
Among the 160 known exoplanets, mainly detected in large radial-velocity surveys, only 8 have a characterization of their actual mass and radius thanks to the two complementary methods of detection: radial velocities and photometric transit. We started in March 2004 an exoplanet-search programme biased toward high-metallicity stars which are more frequently host extra-solar planets. This survey...
متن کاملDetectability of Exoplanetary Transits from Radial Velocity Surveys
Of the known transiting extra-solar planets, a few have been detected through photometric follow-up observations of radial velocity planets. Perhaps the best known of these is the transiting exoplanet HD 209458b. For hot Jupiters (periods less than ∼ 5 days), the a priori information that 10% of these planets will transit their parent star due to the geometric transit probability leads to an es...
متن کاملTowards the Albedo of an Exoplanet: MOST Satellite Observations of Bright Transiting Exoplanetary Systems
The Canadian MOST satellite is a unique platform for observations of bright transiting exoplanetary systems. Providing nearly continuous photometric observations for up to 4 weeks, MOST can produce important observational data to help us learn about the properties of exosolar planets. We review our current observations of HD 209458 and HD 189733 with implications for the albedo and our progress...
متن کاملEXONEST: The Bayesian Exoplanetary Explorer
The fields of astronomy and astrophysics are currently engaged in an unprecedented era of discovery as recent missions have revealed thousands of exoplanets orbiting other stars. While the Kepler Space Telescope mission has enabled most of these exoplanets to be detected by identifying transiting events, exoplanets often exhibit additional photometric effects that can be used to improve the cha...
متن کاملPrecision near Infrared Photometry for Exoplanet Transit Observations - I : Ensemble Spot Photometry for an All-sky Survey
Near-IR observations are important for the detection and characterization of exoplanets using the transit technique, either in surveys of large numbers of stars or for follow-up spectroscopic observations of individual planets. In a controlled laboratory experiment, we imaged ∼ 10 critically sampled spots onto an Teledyne Hawaii-2RG (H2RG) detector to emulate an idealized star-field. We obtaine...
متن کامل