Matches in SemOpenAlex for { <https://semopenalex.org/work/W2939399083> ?p ?o ?g. }
- W2939399083 endingPage "13" @default.
- W2939399083 startingPage "13" @default.
- W2939399083 abstract "We present a statistical analysis of the first 300 stars observed by the Gemini Planet Imager Exoplanet Survey. This subsample includes six detected planets and three brown dwarfs; from these detections and our contrast curves we infer the underlying distributions of substellar companions with respect to their mass, semimajor axis, and host stellar mass. We uncover a strong correlation between planet occurrence rate and host star mass, with stars M* > 1.5 M⊙ more likely to host planets with masses between 2 and 13MJup and semimajor axes of 3–100 au at 99.92% confidence. We fit a double power-law model in planet mass (m) and semimajor axis (a) for planet populations around high-mass stars (M* > 1.5 M⊙) of the form , finding α = −2.4 ± 0.8 and β = −2.0 ± 0.5, and an integrated occurrence rate of % between 5–13MJup and 10–100 au. A significantly lower occurrence rate is obtained for brown dwarfs around all stars, with % of stars hosting a brown dwarf companion between 13–80MJup and 10–100 au. Brown dwarfs also appear to be distributed differently in mass and semimajor axis compared to giant planets; whereas giant planets follow a bottom-heavy mass distribution and favor smaller semimajor axes, brown dwarfs exhibit just the opposite behaviors. Comparing to studies of short-period giant planets from the radial velocity method, our results are consistent with a peak in occurrence of giant planets between ∼1 and 10 au. We discuss how these trends, including the preference of giant planets for high-mass host stars, point to formation of giant planets by core/pebble accretion, and formation of brown dwarfs by gravitational instability." @default.
- W2939399083 created "2019-04-25" @default.
- W2939399083 creator A5001691604 @default.
- W2939399083 creator A5002887188 @default.
- W2939399083 creator A5006033404 @default.
- W2939399083 creator A5006065369 @default.
- W2939399083 creator A5008078263 @default.
- W2939399083 creator A5008100631 @default.
- W2939399083 creator A5008924957 @default.
- W2939399083 creator A5009464790 @default.
- W2939399083 creator A5010950716 @default.
- W2939399083 creator A5011770104 @default.
- W2939399083 creator A5012168505 @default.
- W2939399083 creator A5012383363 @default.
- W2939399083 creator A5012982229 @default.
- W2939399083 creator A5013056663 @default.
- W2939399083 creator A5016056539 @default.
- W2939399083 creator A5020112846 @default.
- W2939399083 creator A5020146514 @default.
- W2939399083 creator A5023778323 @default.
- W2939399083 creator A5025584661 @default.
- W2939399083 creator A5026115271 @default.
- W2939399083 creator A5027323892 @default.
- W2939399083 creator A5031098458 @default.
- W2939399083 creator A5031196290 @default.
- W2939399083 creator A5032207848 @default.
- W2939399083 creator A5036337444 @default.
- W2939399083 creator A5036800487 @default.
- W2939399083 creator A5042133979 @default.
- W2939399083 creator A5044281656 @default.
- W2939399083 creator A5044827883 @default.
- W2939399083 creator A5045098143 @default.
- W2939399083 creator A5046420999 @default.
- W2939399083 creator A5047354924 @default.
- W2939399083 creator A5049156516 @default.
- W2939399083 creator A5049787382 @default.
- W2939399083 creator A5051824379 @default.
- W2939399083 creator A5051967829 @default.
- W2939399083 creator A5051977434 @default.
- W2939399083 creator A5059263007 @default.
- W2939399083 creator A5060148993 @default.
- W2939399083 creator A5060419827 @default.
- W2939399083 creator A5061967484 @default.
- W2939399083 creator A5062819300 @default.
- W2939399083 creator A5065968034 @default.
- W2939399083 creator A5067381103 @default.
- W2939399083 creator A5071345462 @default.
- W2939399083 creator A5072019035 @default.
- W2939399083 creator A5072169121 @default.
- W2939399083 creator A5072734247 @default.
- W2939399083 creator A5073756220 @default.
- W2939399083 creator A5074357302 @default.
- W2939399083 creator A5074406116 @default.
- W2939399083 creator A5074920541 @default.
- W2939399083 creator A5075668364 @default.
- W2939399083 creator A5075729547 @default.
- W2939399083 creator A5076131341 @default.
- W2939399083 creator A5076157892 @default.
- W2939399083 creator A5076670340 @default.
- W2939399083 creator A5079422983 @default.
- W2939399083 creator A5079440367 @default.
- W2939399083 creator A5083615726 @default.
- W2939399083 creator A5086783609 @default.
- W2939399083 creator A5086829334 @default.
- W2939399083 creator A5088079206 @default.
- W2939399083 creator A5088546230 @default.
- W2939399083 creator A5089683673 @default.
- W2939399083 creator A5091640710 @default.
- W2939399083 date "2019-06-12" @default.
- W2939399083 modified "2023-10-17" @default.
- W2939399083 title "The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics from 10 to 100 au" @default.
- W2939399083 cites W1483310431 @default.
- W2939399083 cites W1507730367 @default.
- W2939399083 cites W1596696233 @default.
- W2939399083 cites W1597385910 @default.
- W2939399083 cites W1602987617 @default.
- W2939399083 cites W1656352035 @default.
- W2939399083 cites W1658330429 @default.
- W2939399083 cites W1821586725 @default.
- W2939399083 cites W1829925112 @default.
- W2939399083 cites W1883299030 @default.
- W2939399083 cites W1895121002 @default.
- W2939399083 cites W1965592634 @default.
- W2939399083 cites W1970076709 @default.
- W2939399083 cites W1971148766 @default.
- W2939399083 cites W1971214928 @default.
- W2939399083 cites W1978106706 @default.
- W2939399083 cites W1983551693 @default.
- W2939399083 cites W1992730873 @default.
- W2939399083 cites W1995011483 @default.
- W2939399083 cites W1996236690 @default.
- W2939399083 cites W1999620833 @default.
- W2939399083 cites W2000146957 @default.
- W2939399083 cites W2001265656 @default.
- W2939399083 cites W2001705480 @default.
- W2939399083 cites W2006124034 @default.
- W2939399083 cites W2006141194 @default.
- W2939399083 cites W2013220129 @default.