View in EDS

A universal brown dwarf desert formed between planets and stars.

Saved in:
Bibliographic Details
Title: A universal brown dwarf desert formed between planets and stars.
Authors: Cui, Kaiming1,2, Xiao, Guang-Yao1, Feng, Fabo1,3 ffeng@sjtu.edu.cn, Liu, Beibei4,5, Nayakshin, Sergei6, Hall, Cassandra7,8, Guo, Kangrou1, Lai, Dong1,9, Ogihara, Masahiro1,3, Rui, Yicheng1, Boss, Alan P.10, Butler, R. Paul10, Xuan, Yifan1
Source: Proceedings of the National Academy of Sciences of the United States of America. 3/3/2026, Vol. 123 Issue 9, p1-8. 8p.
Subjects: Origin of planets, Star formation, Radial velocity of stars, Gas giants, Astrometry, Astronomical observations
Abstract: Giant planets and brown dwarfs play a crucial role in star and planet formation as they are situated at the boundary between planets and stars with uncertain formation mechanisms. Previous observational searches for the formation boundary were hampered by the lack of large unified samples of wide-orbit giant planets and substellar companions. A combined analysis of radial velocity and astrometry mitigates this problem and has significantly enlarged the sample. Here, we present a rigorous statistical analysis of the sample of 55 giant planets, brown dwarfs, and low-mass stellar companions orbiting FGK stars. We quantitatively analyze the occurrence rates of brown dwarfs and identify a distinct brown dwarf desert at approximately 30 MJ, with no evidence of disappearance up to 20 au. Unlike previous studies that predicted a declining planet occurrence rate beyond the water-ice line, we identify a population of giant planets and low-mass brown dwarfsin thisregion.Themetallicity and eccentricity trends in our sample suggest that these are the consequences of two different formation scenarios. Our combined population synthesis model successfully accounts for the observed brown dwarf desert, supporting the dual formation hypothesis. [ABSTRACT FROM AUTHOR]
Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 192086263
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: A universal brown dwarf desert formed between planets and stars.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Cui%2C+Kaiming%22">Cui, Kaiming</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Xiao%2C+Guang-Yao%22">Xiao, Guang-Yao</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Feng%2C+Fabo%22">Feng, Fabo</searchLink><relatesTo>1,3</relatesTo><i> ffeng@sjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Beibei%22">Liu, Beibei</searchLink><relatesTo>4,5</relatesTo><br /><searchLink fieldCode="AR" term="%22Nayakshin%2C+Sergei%22">Nayakshin, Sergei</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22Hall%2C+Cassandra%22">Hall, Cassandra</searchLink><relatesTo>7,8</relatesTo><br /><searchLink fieldCode="AR" term="%22Guo%2C+Kangrou%22">Guo, Kangrou</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lai%2C+Dong%22">Lai, Dong</searchLink><relatesTo>1,9</relatesTo><br /><searchLink fieldCode="AR" term="%22Ogihara%2C+Masahiro%22">Ogihara, Masahiro</searchLink><relatesTo>1,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Rui%2C+Yicheng%22">Rui, Yicheng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Boss%2C+Alan+P%2E%22">Boss, Alan P.</searchLink><relatesTo>10</relatesTo><br /><searchLink fieldCode="AR" term="%22Butler%2C+R%2E+Paul%22">Butler, R. Paul</searchLink><relatesTo>10</relatesTo><br /><searchLink fieldCode="AR" term="%22Xuan%2C+Yifan%22">Xuan, Yifan</searchLink><relatesTo>1</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America%22">Proceedings of the National Academy of Sciences of the United States of America</searchLink>. 3/3/2026, Vol. 123 Issue 9, p1-8. 8p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Origin+of+planets%22">Origin of planets</searchLink><br /><searchLink fieldCode="DE" term="%22Star+formation%22">Star formation</searchLink><br /><searchLink fieldCode="DE" term="%22Radial+velocity+of+stars%22">Radial velocity of stars</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+giants%22">Gas giants</searchLink><br /><searchLink fieldCode="DE" term="%22Astrometry%22">Astrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Astronomical+observations%22">Astronomical observations</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Giant planets and brown dwarfs play a crucial role in star and planet formation as they are situated at the boundary between planets and stars with uncertain formation mechanisms. Previous observational searches for the formation boundary were hampered by the lack of large unified samples of wide-orbit giant planets and substellar companions. A combined analysis of radial velocity and astrometry mitigates this problem and has significantly enlarged the sample. Here, we present a rigorous statistical analysis of the sample of 55 giant planets, brown dwarfs, and low-mass stellar companions orbiting FGK stars. We quantitatively analyze the occurrence rates of brown dwarfs and identify a distinct brown dwarf desert at approximately 30 MJ, with no evidence of disappearance up to 20 au. Unlike previous studies that predicted a declining planet occurrence rate beyond the water-ice line, we identify a population of giant planets and low-mass brown dwarfsin thisregion.Themetallicity and eccentricity trends in our sample suggest that these are the consequences of two different formation scenarios. Our combined population synthesis model successfully accounts for the observed brown dwarf desert, supporting the dual formation hypothesis. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=192086263
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1073/pnas.2524764123
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 1
    Subjects:
      – SubjectFull: Origin of planets
        Type: general
      – SubjectFull: Star formation
        Type: general
      – SubjectFull: Radial velocity of stars
        Type: general
      – SubjectFull: Gas giants
        Type: general
      – SubjectFull: Astrometry
        Type: general
      – SubjectFull: Astronomical observations
        Type: general
    Titles:
      – TitleFull: A universal brown dwarf desert formed between planets and stars.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Cui, Kaiming
      – PersonEntity:
          Name:
            NameFull: Xiao, Guang-Yao
      – PersonEntity:
          Name:
            NameFull: Feng, Fabo
      – PersonEntity:
          Name:
            NameFull: Liu, Beibei
      – PersonEntity:
          Name:
            NameFull: Nayakshin, Sergei
      – PersonEntity:
          Name:
            NameFull: Hall, Cassandra
      – PersonEntity:
          Name:
            NameFull: Guo, Kangrou
      – PersonEntity:
          Name:
            NameFull: Lai, Dong
      – PersonEntity:
          Name:
            NameFull: Ogihara, Masahiro
      – PersonEntity:
          Name:
            NameFull: Rui, Yicheng
      – PersonEntity:
          Name:
            NameFull: Boss, Alan P.
      – PersonEntity:
          Name:
            NameFull: Butler, R. Paul
      – PersonEntity:
          Name:
            NameFull: Xuan, Yifan
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 03
              M: 03
              Text: 3/3/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 00278424
          Numbering:
            – Type: volume
              Value: 123
            – Type: issue
              Value: 9
          Titles:
            – TitleFull: Proceedings of the National Academy of Sciences of the United States of America
              Type: main
ResultId 1