No Massive Companion to the Coherent Radio-emitting M Dwarf GJ 1151

被引：15

作者：

Pope, Benjamin J. S. ^{[1
,2
]}

Bedell, Megan ^{[3
]}

Callingham, Joseph R. ^{[4
]}

Vedantham, Harish K. ^{[4
,5
]}

Snellen, Ignas A. G. ^{[6
]}

Price-Whelan, Adrian M. ^{[3
]}

Shimwell, Timothy W. ^{[4
]}

机构：

[1] NYU, Dept Phys, Ctr Cosmol & Particle Phys, 726 Broadway, New York, NY 10003 USA

[2] NYU, Ctr Data Sci, 60 Fifth Ave, New York, NY 10011 USA

[3] Flatiron Inst, Ctr Computat Astrophys, 162 Fifth Ave, New York, NY 10010 USA

[4] Netherlands Inst Radio Astron, ASTRON, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands

[5] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands

[6] Leiden Univ, Leiden Observ, Postbus 9513, NL-2300 RA Leiden, Netherlands

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2020年 / 890卷 / 02期

基金：

欧洲研究理事会;

关键词：

STAR; PLANET;

D O I：

10.3847/2041-8213/ab5b99

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The recent detection of circularly polarized, long-duration (>8 hr), low-frequency (similar to 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 < 5.6 M-circle plus. 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 (https://github.com/benjaminpope/video).

引用

页数：5

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