English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

The EBLM Project. V. Physical properties of ten fully convective, very-low-mass stars

MPS-Authors

von Boetticher,  Alexander
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Triaud,  Amaury H. M. J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Queloz,  Didier
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gill,  Sam
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Maxted,  Pierre F. L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Almleaky,  Yaseen
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Anderson,  David R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bouchy,  François
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Burdanov,  Artem
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Collier Cameron,  Andrew
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Delrez,  Laetitia
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ducrot,  Elsa
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Faedi,  Francesca
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gillon,  Michaël
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gómez Maqueo Chew,  Yilen
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hebb,  Leslie
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hellier,  Coel
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Jehin,  Emmanuël
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lendl,  Monika
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Marmier,  Maxime
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Martin,  David V.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

McCormac,  James
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pepe,  Francesco
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pollacco,  Don
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ségransan,  Damien
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Smalley,  Barry
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Thompson,  Samantha
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Turner,  Oliver
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Udry,  Stéphane
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Van Grootel,  Valérie
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

West,  Richard
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2019A&A...625A.150V
(Any fulltext)

Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

von Boetticher, A., Triaud, A. H. M. J., Queloz, D., Gill, S., Maxted, P. F. L., Almleaky, Y., et al. (2019). The EBLM Project. V. Physical properties of ten fully convective, very-low-mass stars. Astronomy and Astrophysics, 625.


Cite as: https://hdl.handle.net/21.11116/0000-0005-D21A-1
Abstract
Measurements of the physical properties of stars at the lower end of the main sequence are scarce. In this context we report masses, radii and surface gravities of ten very-low-mass stars in eclipsing binary systems, with orbital periods of the order of several days. The objects probe the stellar mass-radius relation in the fully convective regime, M⋆ ≲ 0.35 M☉, down to the hydrogen burning mass- limit, MHB ~ 0.07 M☉. The stars were detected by the WASP survey for transiting extra-solar planets, as low-mass, eclipsing companions orbiting more massive, F- and G-type host stars. We use eclipse observations of the host stars, performed with the TRAPPIST, Leonhard Euler and SPECULOOS telescopes, and radial velocities of the host stars obtained with the CORALIE spectrograph, to determine the physical properties of the low-mass companions. Surface gravities of the low-mass companions are derived from the eclipse and orbital parameters of each system. Spectroscopic measurements of the host star effective temperature and metallicity are used to infer the host star mass and age from stellar evolution models for solar-type stars. Masses and radii of the low-mass companions are then derived from the eclipse and orbital parameters of the binary systems. The objects are compared to stellar evolution models for low-mass stars, to test for an effect of the stellar metallicity and orbital period on the radius of low-mass stars in close binary systems. Measurements are found to be in good agreement with stellar evolution models; a systematic inflation of the radius of low-mass stars with respect to model predictions is limited to 1.6 ± 1.2%, in the fully convective low-mass regime. The sample of ten objects indicates a scaling of the radius of low-mass stars with the host star metallicity. No correlation between stellar radii and the orbital periods of the binary systems is determined. A combined analysis with thirteen comparable objects from the literature is consistent with this result. The eclipse and radial velocity data are available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr/">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz- bin/qcat?J/A+A/625/A150">http://cdsarc.u-strasbg.fr/viz- bin/qcat?J/A+A/625/A150</A>