SIMBAD references

2019ApJ...871..172R - Astrophys. J., 871, 172-172 (2019/February-1)

Flat-spectrum radio continuum emission associated with ε Eridani.

RODRIGUEZ L.F., LIZANO S., LOINARD L., CHAVEZ-DAGOSTINO M., BASTIAN T.S. and BEASLEY A.J.

Abstract (from CDS):

We present Very Large Array observations at 33.0 GHz that detect emission coincident with ε Eridani to within 0.''07 (0.2 au at the distance of this star), with a positional accuracy of 0.''05. This result strongly supports the suggestion of previous authors that the quiescent centimeter emission comes from the star and not from a proposed giant exoplanet with a semimajor axis of ∼1.''0 (3.4 au). The centimeter emission is remarkably flat and is consistent with optically thin free-free emission. In particular, it can be modeled as a stellar wind with a mass-loss rate of the order of 6.6 x 10–11 M yr–1, which is 3300 times the solar value, exceeding other estimates of this star's wind. However, interpretation of the emission in terms of other thermal mechanisms like coronal free-free and gyroresonance emission cannot be discarded.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): radio continuum: stars - stars: individual: ε Eri

Nomenclature: Table 2: [RLL2019] NN (Nos 1-16).

Simbad objects: 20

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