Assessing the Transiting Exoplanet Survey Satellite’s Yield of Rocky Planets Around Nearby M Dwarfs
نویسندگان
چکیده
Terrestrial planets are easier to detect around M dwarfs than other types of stars, making them promising for next-generation atmospheric characterization studies. The $TESS$ mission has greatly increased the number known dwarf that we can use perform population studies, allowing us explore how rocky planet occurrence rate varies with host radius, following in footsteps past work $Kepler$ data. In this paper, simulations assess $TESS$'s yield small ($0.5\,R_\oplus \,<\,R_p\,<\,2\,R_\oplus$) candidates nearby ($d\,<\,30$ pc) dwarfs. We highlight underappreciated fact while was indeed expected find a large overall, it not have high planetary latest Furthermore, detected fewer stars $R_*\,<\,0.3 R_\odot$ even (11 observed vs. $24\,\pm\,5$ expected). evidence photometric noise bandpass increases decreasing radius However, trend cannot explain distribution planets. Our main conclusions are: (1) likely doesn't increase, and may decrease dwarfs; (2) there at least 17, potentially three times number, transiting late still won't be by end 4th year.
منابع مشابه
Imaging planets around nearby white dwarfs
We suggest that Jovian planets will survive the late stages of stellar evolution, and that white dwarfs will retain planetary systems in wide orbits (∼ 5 AU). Utilising evolutionary models for Jovian planets, we show that infra-red imaging with 8m class telescopes of suitable nearby white dwarfs should allow us to resolve and detect companions ∼ 3MJUP. Detection of massive planetary companions ...
متن کاملThe MEarth project: searching for transiting habitable super-Earths around nearby M-dwarfs
Due to their small radii, M-dwarfs are very promising targets to search for transiting super-Earths, with a planet of 2 Earth radii orbiting an M5 dwarf in the habitable zone giving rise to a 0.5% photometric signal, with a period of two weeks. This can be detected from the ground using modest-aperture telescopes by targeting samples of nearby M-dwarfs. Such planets would be very amenable to fo...
متن کاملTransiting Exoplanet Survey Satellite
The Transiting Exoplanet Survey Satellite (TESS) will search for planets transiting bright and nearby stars. TESS has been selected by NASA for launch in 2017 as an Astrophysics Explorer mission. The spacecraft will be placed into a highly elliptical 13.7-day orbit around the Earth. During its 2-year mission, TESS will employ four wide-field optical charge-coupled device cameras to monitor at l...
متن کاملThe Trends High-contrast Imaging Survey. Iv. the Occurrence Rate of Giant Planets around M-dwarfs
Doppler-based planet surveys have discovered numerous giant planets but are incomplete beyond several AU. At larger star-planet separations direct planet detection through high-contrast imaging has proven successful, but this technique is sensitive only to young planets and characterization relies upon theoretical evolution models. Here we demonstrate radial velocity measurements and high-contr...
متن کاملPlanets Around M-dwarfs – Astrometric Detection and Orbit Characterization
There are compelling reasons to search for planets around late M-dwarfs: current planet surveys have not been able to target these optically-faint stars, and the reduced primary stellar mass improves planet detection sensitivity for new techniques which can target these stars. In this white paper we argue that one can employ aging 2 m telescopes for dedicated astrometric programs in the spirit ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2022
ISSN: ['1538-3881', '0004-6256']
DOI: https://doi.org/10.3847/1538-3881/ac64a0