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

doi:10.1088/2041-8205/807/1/L13

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

Research output: Contribution to journal › Article › peer-review

22 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_s). Comparison with synthetic spectra yields a higher temperature than previous studies of T_eff = 2000 ± 100 K and significant dust extinction of A_V = 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.

Original language	English
Article number	L13
Journal	Astrophysical Journal Letters
Volume	807
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/807/1/L13
Publication status	Published - 2015 Jul 1
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/2041-8205/807/1/L13

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Wu, Y. L., Close, L. M., Males, J. R., Barman, T. S., Morzinski, K. M., Follette, K. B., Bailey, V. P., Rodigas, T. J., Hinz, P., Puglisi, A., Xompero, M., & Briguglio, R. (2015). NEW EXTINCTION AND MASS ESTIMATES OF THE LOW-MASS COMPANION 1RXS 1609 B WITH THE MAGELLAN AO SYSTEM: EVIDENCE OF AN INCLINED DUST DISK. Astrophysical Journal Letters, 807(1), Article L13. https://doi.org/10.1088/2041-8205/807/1/L13

Wu, YL, Close, LM, Males, JR, Barman, TS, Morzinski, KM, Follette, KB, Bailey, VP, Rodigas, TJ, Hinz, P, Puglisi, A, Xompero, M & Briguglio, R 2015, 'NEW EXTINCTION AND MASS ESTIMATES OF THE LOW-MASS COMPANION 1RXS 1609 B WITH THE MAGELLAN AO SYSTEM: EVIDENCE OF AN INCLINED DUST DISK', Astrophysical Journal Letters, vol. 807, no. 1, L13. https://doi.org/10.1088/2041-8205/807/1/L13

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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 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.",

keywords = "brown dwarfs, instrumentation: adaptive optics, planetary systems, planets and satellites: individual",

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AU - Wu, Ya Lin

AU - Close, Laird M.

AU - Males, Jared R.

AU - Barman, Travis S.

AU - Morzinski, Katie M.

AU - Follette, Katherine B.

AU - Bailey, Vanessa P.

AU - Rodigas, Timothy J.

AU - Hinz, Philip

AU - Puglisi, Alfio

AU - Xompero, Marco

AU - Briguglio, Runa

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AB - 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.

KW - brown dwarfs

KW - instrumentation: adaptive optics

KW - planetary systems

KW - planets and satellites: individual

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

Abstract

Keywords

ASJC Scopus subject areas

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