Exoplanetary Circumstellar Environments and Disk Explorer(EXCEDE) is a proposed space telescope for NASA's Explorer program to observe circumstellar protoplanetary and debris discs and study planet formation around nearby (within 100 parsecs) stars of spectral classes M to B.[1] Had it been selected for development, it was proposed to launch in 2019.
The spacecraft concept proposed to use a 70 centimeter diameter telescope-mounted coronagraph called PIAA (Phase Induced Amplitude Apodized Coronagraph) to suppress starlight in order to be able to detect fainter radiation of circumstellar dust.[1] Characterizing constitution of such disks would provide clues for planetary formation (mostly in habitable zones), while already existing exoplanets can be detected through their interaction with dust disk. The project's Principal Investigator is Glenn Schneider.[1]
^ abcdefThe EXoplanetary Circumstellar Environments and Disk Explorer (EXCEDE). (PDF). Olivier Guyon, Glenn Schneider, Ruslan Belikov, Domenick J. Tenerelli. arXive repository. 10 October 2012. doi:10.1117/12.927188
and 20 Related for: Exoplanetary Circumstellar Environments and Disk Explorer information
A circumstellar disc (or circumstellardisk) is a torus, pancake or ring-shaped accretion disk of matter composed of gas, dust, planetesimals, asteroids...
resolved circumstellar disc." In 2020 though, the parameters of CS Cha B were revised, making it an accreting red dwarf star, and making the disk circumstellar...
out of a nebula to create a young protostar orbited by a protoplanetary disk. There are eight planets within the Solar System; planets outside of the...
Retrieved 14 January 2024. "The TOLIMAN mission: precision astrometry for exoplanetary discovery in the solar neighborhood" (PDF). Archived (PDF) from the original...
of related gas, dust and debris, which may eventually surround the parent star in the form of a circumstellardisk or debris disk. As a consequence, the...
grains of amorphous carbon and silicate dust that fill the plane of extrasolar planetary systems. It is the exoplanetary analog of zodiacal dust, the...
constellation Eridanus. It is 96 light years away from the solar system, and it is approximately 20 million years old. 51 Eridani b was announced in August...
arc annually. The star is over 5 billion years old and has only about 18% the mass of the Sun and 21% of its radius. LHS 1140's rotational period is 130 days...
star GU Piscium, with an extremely large orbit of 2,000 AU (3.0×1011 km), and an apparent angular separation of 42 arc seconds. The planet is located at...
In Evans, Christopher J; Simard, Luc; Takami, Hideki (eds.). Ground-based and Airborne Instrumentation for Astronomy VI. Vol. 9908. pp. 99086T. arXiv:1606...
Torres Fellow at the Massachusetts Institute of Technology, a L'Oreal Fellow, and a NASA Carl Sagan Fellow. Ballard was part of a collaborative team that was...
and CO 2. Planets that form prior to the dissipation of the gaseous circumstellardisk experience strong torques that can induce rapid inward migration into...
kilometres (20,000 mi) in diameter and 12 times as massive as Earth. It was discovered by the NASA Kepler spacecraft, and is the first exoplanet discovered...
658 Martin, Rebecca G.; Livio, Mario (2015). "The Solar System as an Exoplanetary System". The Astrophysical Journal. 810 (2): 105. arXiv:1508.00931. Bibcode:2015ApJ...
"The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High-contrast Imaging of the Exoplanet HIP 65426 b from 2...
with this method. CircumstellardisksDisks of space dust surround many stars, thought to originate from collisions among asteroids and comets. The dust...
NIRCam and MIRI feature starlight-blocking coronagraphs for observation of faint targets such as extrasolar planets andcircumstellardisks very close...
store. Observed by CoRoT during an outburst of matter towards its circumstellardisk, which is typical of such stars, its frequency spectrum suffered drastic...
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