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

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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.",

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

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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.

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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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