Precision astrometry with adaptive optics: Constraints on the mutual orbit of Luhman 16AB from GeMS

S. Mark Ammons; E. Victor Garcia; Maissa Salama; Benoit Neichel; Jessica Lu; Christian Marois; Bruce Macintosh; Dmitry Savransky; Eduardo Bendek; Olivier Guyon; Eduardo Marin; Vincent Garrel; Gaetano Sivo

doi:10.1117/12.2233775

Precision astrometry with adaptive optics: Constraints on the mutual orbit of Luhman 16AB from GeMS

S. Mark Ammons, E. Victor Garcia, Maissa Salama, Benoit Neichel, Jessica Lu, Christian Marois, Bruce Macintosh, Dmitry Savransky, Eduardo Bendek, Olivier Guyon, Eduardo Marin, Vincent Garrel, Gaetano Sivo

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Scopus citations

Abstract

ELTs equipped with MCAO systems will be powerful astrometric tools in the next two decades. With sparse-field precisions exceeding 30 uas for V > 18, the ELTs will surpass even GAIA's per-epoch precision for faint stars (V > 12). We present results from an ongoing astrometry program with Gemini GeMS and discuss synergies with WFIRST and GAIA. First, we present a fit to the relative orbit of the individual L/T components of Luhman16 AB, the nearest brown dwarf binary known. Exploiting GeMS' wide field of view to image reference stars, we are able to track the relative motion to better than 0.2 mas. We find that a mutual Keplerian orbit with no perturbing planets fits the binary separation to within the measurement errors, ruling out companions down to 14 earth masses for certain orbits and periods.

Original language	English (US)
Title of host publication	Adaptive Optics Systems V
Editors	Enrico Marchetti, Jean-Pierre Veran, Laird M. Close
Publisher	SPIE
ISBN (Electronic)	9781510601970
DOIs	https://doi.org/10.1117/12.2233775
State	Published - 2016
Externally published	Yes
Event	Adaptive Optics Systems V - Edinburgh, United Kingdom Duration: Jun 26 2016 → Jul 1 2016

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9909
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Adaptive Optics Systems V
Country/Territory	United Kingdom
City	Edinburgh
Period	6/26/16 → 7/1/16

Keywords

Adaptive optics
Astrometry
Brown dwarf
M92
Multi-conjugate
NGC 1851
Tomography

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2233775

Cite this

Ammons, S. M., Garcia, E. V., Salama, M., Neichel, B., Lu, J., Marois, C., Macintosh, B., Savransky, D., Bendek, E., Guyon, O., Marin, E., Garrel, V., & Sivo, G. (2016). Precision astrometry with adaptive optics: Constraints on the mutual orbit of Luhman 16AB from GeMS. In E. Marchetti, J.-P. Veran, & L. M. Close (Eds.), Adaptive Optics Systems V Article 99095T (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9909). SPIE. https://doi.org/10.1117/12.2233775

Precision astrometry with adaptive optics: Constraints on the mutual orbit of Luhman 16AB from GeMS. / Ammons, S. Mark; Garcia, E. Victor; Salama, Maissa et al.
Adaptive Optics Systems V. ed. / Enrico Marchetti; Jean-Pierre Veran; Laird M. Close. SPIE, 2016. 99095T (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9909).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ammons, SM, Garcia, EV, Salama, M, Neichel, B, Lu, J, Marois, C, Macintosh, B, Savransky, D, Bendek, E, Guyon, O, Marin, E, Garrel, V & Sivo, G 2016, Precision astrometry with adaptive optics: Constraints on the mutual orbit of Luhman 16AB from GeMS. in E Marchetti, J-P Veran & LM Close (eds), Adaptive Optics Systems V., 99095T, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9909, SPIE, Adaptive Optics Systems V, Edinburgh, United Kingdom, 6/26/16. https://doi.org/10.1117/12.2233775

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abstract = "ELTs equipped with MCAO systems will be powerful astrometric tools in the next two decades. With sparse-field precisions exceeding 30 uas for V > 18, the ELTs will surpass even GAIA's per-epoch precision for faint stars (V > 12). We present results from an ongoing astrometry program with Gemini GeMS and discuss synergies with WFIRST and GAIA. First, we present a fit to the relative orbit of the individual L/T components of Luhman16 AB, the nearest brown dwarf binary known. Exploiting GeMS' wide field of view to image reference stars, we are able to track the relative motion to better than 0.2 mas. We find that a mutual Keplerian orbit with no perturbing planets fits the binary separation to within the measurement errors, ruling out companions down to 14 earth masses for certain orbits and periods.",

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AU - Garcia, E. Victor

AU - Salama, Maissa

AU - Neichel, Benoit

AU - Lu, Jessica

AU - Marois, Christian

AU - Macintosh, Bruce

AU - Savransky, Dmitry

AU - Bendek, Eduardo

AU - Guyon, Olivier

AU - Marin, Eduardo

AU - Garrel, Vincent

AU - Sivo, Gaetano

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N2 - ELTs equipped with MCAO systems will be powerful astrometric tools in the next two decades. With sparse-field precisions exceeding 30 uas for V > 18, the ELTs will surpass even GAIA's per-epoch precision for faint stars (V > 12). We present results from an ongoing astrometry program with Gemini GeMS and discuss synergies with WFIRST and GAIA. First, we present a fit to the relative orbit of the individual L/T components of Luhman16 AB, the nearest brown dwarf binary known. Exploiting GeMS' wide field of view to image reference stars, we are able to track the relative motion to better than 0.2 mas. We find that a mutual Keplerian orbit with no perturbing planets fits the binary separation to within the measurement errors, ruling out companions down to 14 earth masses for certain orbits and periods.

AB - ELTs equipped with MCAO systems will be powerful astrometric tools in the next two decades. With sparse-field precisions exceeding 30 uas for V > 18, the ELTs will surpass even GAIA's per-epoch precision for faint stars (V > 12). We present results from an ongoing astrometry program with Gemini GeMS and discuss synergies with WFIRST and GAIA. First, we present a fit to the relative orbit of the individual L/T components of Luhman16 AB, the nearest brown dwarf binary known. Exploiting GeMS' wide field of view to image reference stars, we are able to track the relative motion to better than 0.2 mas. We find that a mutual Keplerian orbit with no perturbing planets fits the binary separation to within the measurement errors, ruling out companions down to 14 earth masses for certain orbits and periods.

KW - Adaptive optics

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KW - Multi-conjugate

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KW - Tomography

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Precision astrometry with adaptive optics: Constraints on the mutual orbit of Luhman 16AB from GeMS

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