What question did this study set out to answer?

To estimate the probability of finding undetected brown dwarfs within 1.2 pc of the Sun based on spatial distributions.

May 19, 2026Astronomy Reports0 citations

Probability of the Presence of Undetected Brown Dwarfs in the Solar Vicinity

DBD. R. BakirovaMoscow Institute of Physics and Technology OMO. Yu. MalkovInstitute of Astronomy

Key Points

To estimate the probability of finding undetected brown dwarfs within 1.2 pc of the Sun based on spatial distributions.
Derived an expression for probability estimates based on the positional distribution of objects within 20 pc of the solar system
Corrected for observational data incompleteness
Discussed factors affecting the detection of brown dwarfs.
Estimated probability of approximately 0.5 for the existence of a brown dwarf within 1.2 pc from the Sun
Explored reasons for the potential undetection of these objects
Discussed the multiplicity of hypothetical brown dwarf candidates.

Abstract

Based on the spatial distribution of objects in the solar vicinity with a radius of 20 pc and after correcting for incomplete observational data, an expression for estimating the probability of finding an object at a certain distance from the Sun has been derived. According to these estimates, there is a probability of 1pt 0. 5 that a brown dwarf exists in the immediate solar vicinity (< 1pt 1. 2 pc). The possible multiplicity of this hypothetical object, as well as the reasons why it has not yet been detected, has been discussed. The paper is partially based on a report presented at the conference Modern Stellar Astronomy—2025.

AI से पूछें

Bookmark

View Full Paper