No massive companion to the coherent radio-emitting M dwarf GJ 1151

Benjamin J. S. Pope; Megan Bedell; Joseph R. Callingham; Harish K. Vedantham; Ignas A. G. Snellen; Adrian M. Price-Whelan; Timothy W. Shimwell

doi:10.3847/2041-8213/ab5b99

No massive companion to the coherent radio-emitting M dwarf GJ 1151

Benjamin J. S. Pope, Megan Bedell, Joseph R. Callingham, Harish K. Vedantham, Ignas A. G. Snellen, Adrian M. Price-Whelan, Timothy W. Shimwell

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

17 Citations (Scopus)

Abstract

The recent detection of circularly polarized, long-duration (>8 hr), low-frequency (∼150 MHz) radio emission from the M4.5 dwarf GJ 1151 has been interpreted as arising from a star-planet interaction via the electron cyclotron maser instability. The existence or parameters of the proposed planets have not been determined. Using 20 new HARPS-N observations, we put 99th-percentile upper limits on the mass of any close companion to GJ 1151 at M sin i < 5.6M_⊕. With no stellar, brown dwarf, or giant planet companion likely in a close orbit, our data are consistent with detected radio emission emerging from a magnetic interaction between a short-period terrestrial-mass planet and GJ 1151 (http://github.com/benjaminpope/video).

Original language	English
Article number	L19
Pages (from-to)	1-5
Number of pages	5
Journal	The Astrophysical Journal Letters
Volume	890
Issue number	2
DOIs	https://doi.org/10.3847/2041-8213/ab5b99
Publication status	Published - 20 Feb 2020
Externally published	Yes

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title = "No massive companion to the coherent radio-emitting M dwarf GJ 1151",

abstract = "The recent detection of circularly polarized, long-duration (>8 hr), low-frequency (∼150 MHz) radio emission from the M4.5 dwarf GJ 1151 has been interpreted as arising from a star-planet interaction via the electron cyclotron maser instability. The existence or parameters of the proposed planets have not been determined. Using 20 new HARPS-N observations, we put 99th-percentile upper limits on the mass of any close companion to GJ 1151 at M sin i < 5.6M⊕. With no stellar, brown dwarf, or giant planet companion likely in a close orbit, our data are consistent with detected radio emission emerging from a magnetic interaction between a short-period terrestrial-mass planet and GJ 1151 (http://github.com/benjaminpope/video).",

author = "Pope, \{Benjamin J. S.\} and Megan Bedell and Callingham, \{Joseph R.\} and Vedantham, \{Harish K.\} and Snellen, \{Ignas A. G.\} and Price-Whelan, \{Adrian M.\} and Shimwell, \{Timothy W.\}",

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doi = "10.3847/2041-8213/ab5b99",

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T1 - No massive companion to the coherent radio-emitting M dwarf GJ 1151

AU - Pope, Benjamin J. S.

AU - Bedell, Megan

AU - Callingham, Joseph R.

AU - Vedantham, Harish K.

AU - Snellen, Ignas A. G.

AU - Price-Whelan, Adrian M.

AU - Shimwell, Timothy W.

PY - 2020/2/20

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N2 - The recent detection of circularly polarized, long-duration (>8 hr), low-frequency (∼150 MHz) radio emission from the M4.5 dwarf GJ 1151 has been interpreted as arising from a star-planet interaction via the electron cyclotron maser instability. The existence or parameters of the proposed planets have not been determined. Using 20 new HARPS-N observations, we put 99th-percentile upper limits on the mass of any close companion to GJ 1151 at M sin i < 5.6M⊕. With no stellar, brown dwarf, or giant planet companion likely in a close orbit, our data are consistent with detected radio emission emerging from a magnetic interaction between a short-period terrestrial-mass planet and GJ 1151 (http://github.com/benjaminpope/video).

AB - The recent detection of circularly polarized, long-duration (>8 hr), low-frequency (∼150 MHz) radio emission from the M4.5 dwarf GJ 1151 has been interpreted as arising from a star-planet interaction via the electron cyclotron maser instability. The existence or parameters of the proposed planets have not been determined. Using 20 new HARPS-N observations, we put 99th-percentile upper limits on the mass of any close companion to GJ 1151 at M sin i < 5.6M⊕. With no stellar, brown dwarf, or giant planet companion likely in a close orbit, our data are consistent with detected radio emission emerging from a magnetic interaction between a short-period terrestrial-mass planet and GJ 1151 (http://github.com/benjaminpope/video).

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JF - The Astrophysical Journal Letters

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No massive companion to the coherent radio-emitting M dwarf GJ 1151

Abstract

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