Bottrill, A.L., Haigh, M.E., Hole, M.R.A. et al. (4 more authors) (2020) Exoplanet detection and its dependence on stochastic sampling of the stellar initial mass function. The Astrophysical Journal, 895 (2). 141. ISSN 0004-637X
Abstract
Young moving groups (YMGs) are close (<100 pc), coherent collections of young (<100 Myr) stars that appear to have formed in the same star-forming molecular cloud. As such we would expect their individual initial mass functions (IMFs) to be similar to other star-forming regions, and by extension the Galactic field. Their close proximity to the Sun and their young ages means that YMGs are promising locations to search for young forming exoplanets. However, due to their low numbers of stars, stochastic sampling of the IMF means their stellar populations could vary significantly. We determine the range of planet-hosting stars (spectral types A, G, and M) possible from sampling the IMF multiple times, and find that some YMGs appear deficient in M-dwarfs. We then use these data to show that the expected probability of detecting terrestrial magma ocean planets is highly dependent on the exact numbers of stars produced through stochastic sampling of the IMF.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The American Astronomical Society. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | astro-ph.EP; astro-ph.EP; astro-ph.GA; astro-ph.SR |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Funding Information: | Funder Grant number ROYAL SOCIETY DH150108 Royal Society 13178 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 22 Jun 2020 17:07 |
Last Modified: | 24 May 2024 12:52 |
Status: | Published |
Publisher: | American Astronomical Society |
Refereed: | Yes |
Identification Number: | 10.3847/1538-4357/ab8e39 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:162206 |