2022
DOI: 10.48550/arxiv.2205.02213
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Results from The COPAINS Pilot Survey: four new brown dwarfs and a high companion detection rate for accelerating stars

M. Bonavita,
C. Fontanive,
R. Gratton
et al.

Abstract: The last decade of direct imaging (DI) searches for sub-stellar companions has uncovered a widely diverse sample that challenges the current formation models, while highlighting the intrinsically low occurrence rate of wide companions, especially at the lower end of the mass distribution. These results clearly show how blind surveys, crucial to constrain the underlying planet and sub-stellar companion population, are not an efficient way to increase the sample of DI companions. It is therefore becoming clear t… Show more

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Cited by 2 publications
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“…The advent of Gaia (Gaia Collaboration et al 2016) has brought our view of the Galaxy to its grandest level of sharpness, opening up tremendous possibilities that stretch from the direct detection of exoplanets (e.g., Bonavita et al 2022) to the realm of galactic archaeology (e.g., Helmi et al 2018). The availability of precise photometric and distance measurements for ∼ 2 • 10 9 stars enabled by Gaia EDR3 (Gaia Collaboration et al 2021) has paved the way to precise large-scale measurements of stellar luminosity and effective temperature, which in turn allow to discern exquisite features inside theoretical Hertzsprung-Russell diagrams (HRD) or their observational counterpart, color-magnitude diagrams (CMD) (Gaia Collaboration et al 2018a).…”
Section: Introductionmentioning
confidence: 99%
“…The advent of Gaia (Gaia Collaboration et al 2016) has brought our view of the Galaxy to its grandest level of sharpness, opening up tremendous possibilities that stretch from the direct detection of exoplanets (e.g., Bonavita et al 2022) to the realm of galactic archaeology (e.g., Helmi et al 2018). The availability of precise photometric and distance measurements for ∼ 2 • 10 9 stars enabled by Gaia EDR3 (Gaia Collaboration et al 2021) has paved the way to precise large-scale measurements of stellar luminosity and effective temperature, which in turn allow to discern exquisite features inside theoretical Hertzsprung-Russell diagrams (HRD) or their observational counterpart, color-magnitude diagrams (CMD) (Gaia Collaboration et al 2018a).…”
Section: Introductionmentioning
confidence: 99%
“…The discovery of HIP 21152 B was independently reported byBonavita et al (2022) with their VLT/SPHERE imaging performed among a survey for a large sample of accelerating targets.Franson et al (in prep) have also independently discovered HIP 21152 B with their originally obtained data, and will characterize this system in detail with all the available data. 2 http://www.exoplanetes.umontreal.ca/banyan/…”
mentioning
confidence: 98%