NEW EXTINCTION AND MASS ESTIMATES OF THE LOW-MASS COMPANION 1RXS 1609 B WITH THE MAGELLAN AO SYSTEM: EVIDENCE OF AN INCLINED DUST DISK

Ya Lin Wu, Laird M. Close, Jared R. Males, Travis S. Barman, Katie M. Morzinski, Katherine B. Follette, Vanessa P. Bailey, Timothy J. Rodigas, Philip Hinz, Alfio Puglisi, Marco Xompero, Runa Briguglio

研究成果: 雜誌貢獻期刊論文同行評審

20 引文 斯高帕斯(Scopus)

摘要

We used the Magellan adaptive optics system to image the 11 Myr substellar companion 1RXS 1609 B at the bluest wavelengths to date (z′ and Ys). Comparison with synthetic spectra yields a higher temperature than previous studies of Teff = 2000 ± 100 K and significant dust extinction of AV = 4.5+0.5-0.7 mag. Mass estimates based on the DUSTY tracks gives 0.012-0.015 M, making the companion likely a low-mass brown dwarf surrounded by a dusty disk. Our study suggests that 1RXS 1609 B is one of the ∼25% of Upper Scorpius low-mass members harboring disks, and it may have formed like a star and not a planet out at ∼320 AU.

原文英語
文章編號L13
期刊Astrophysical Journal Letters
807
發行號1
DOIs
出版狀態已發佈 - 2015 7月 1
對外發佈

ASJC Scopus subject areas

  • 天文和天體物理學
  • 空間與行星科學

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