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 M Hinz, Alfio Puglisi, Marco Xompero, Runa Briguglio

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

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 Y<inf>s</inf>). Comparison with synthetic spectra yields a higher temperature than previous studies of T<inf>eff</inf> = 2000 ± 100 K and significant dust extinction of A<inf>V</inf> = 4.5<sup>+0.5</sup><inf>-0.7</inf> mag. Mass estimates based on the DUSTY tracks gives 0.012-0.015 M<inf>⊙</inf>, 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.

Original languageEnglish (US)
Article numberL13
JournalAstrophysical Journal Letters
Volume807
Issue number1
DOIs
StatePublished - Jul 1 2015

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extinction
dust
estimates
adaptive optics
planets
planet
wavelength
stars
wavelengths
comparison

Keywords

  • brown dwarfs
  • instrumentation: adaptive optics
  • planetary systems
  • planets and satellites: individual

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

NEW EXTINCTION AND MASS ESTIMATES OF THE LOW-MASS COMPANION 1RXS 1609 B WITH THE MAGELLAN AO SYSTEM : EVIDENCE OF AN INCLINED DUST DISK. / Wu, Ya Lin; Close, Laird M; Males, Jared R.; Barman, Travis S; Morzinski, Katie M.; Follette, Katherine B.; Bailey, Vanessa P.; Rodigas, Timothy J.; Hinz, Philip M; Puglisi, Alfio; Xompero, Marco; Briguglio, Runa.

In: Astrophysical Journal Letters, Vol. 807, No. 1, L13, 01.07.2015.

Research output: Contribution to journalArticle

Wu, Ya Lin ; Close, Laird M ; Males, Jared R. ; Barman, Travis S ; Morzinski, Katie M. ; Follette, Katherine B. ; Bailey, Vanessa P. ; Rodigas, Timothy J. ; Hinz, Philip M ; Puglisi, Alfio ; Xompero, Marco ; Briguglio, Runa. / NEW EXTINCTION AND MASS ESTIMATES OF THE LOW-MASS COMPANION 1RXS 1609 B WITH THE MAGELLAN AO SYSTEM : EVIDENCE OF AN INCLINED DUST DISK. In: Astrophysical Journal Letters. 2015 ; Vol. 807, No. 1.
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