Trumpeting M dwarfs with CONCH-SHELL: a catalogue of nearby cool host-stars for habitable exoplanets and life
We present an all-sky catalog of 2970 nearby (d . 50 pc), bright (J < 9) M- or late Ktype dwarf stars, 86% of which have been confirmed by spectroscopy. This catalog will be useful for searches for…
High stellar FUV/NUV ratio and oxygen contents in the atmospheres of potentially habitable planets
- F. Tian, K. France, J. Linsky, P. Mauas, M. Vieytes
- Physics, Geology
- 1 October 2013
Stellar parameters and chemical abundances of 223 evolved stars with and without planets
- E. Jofr'e, R. Petrucci, P. Mauas
- Physics, Geology
- 23 October 2014
Aims. We present fundamental stellar parameters, chemical abundances, and rotational velocities for a sample of 86 evolved stars with planets (56 giants; 30 subgiants), and for a control sample of…
Measuring helium abundance difference in giants of NGC 2808
- L. Pasquini, P. Mauas, H. Kaufl, C. Cacciari
- Physics
- 2 May 2011
Context. Multiple populations have been detected in several globular clusters (GC) that do not display a spread in metallicity. Unusual features of their observed colour–magnitude diagrams (CMD) can…
Hα and the Ca II H and K lines as activity proxies for late-type stars
- C. Cincunegui, R. Díaz, P. Mauas
- Physics
- 1 July 2007
Context. The main chromospheric activity indicator is the S index, which is the ratio of the flux in the core of the Ca II H and K lines to the continuum nearby, and is well studied for stars from F…
THE MUSCLES TREASURY SURVEY. I. MOTIVATION AND OVERVIEW
- K. France, R. Loyd, Kolby L. Weisenburger
- Physics, Geology
- 29 February 2016
Ground- and space-based planet searches employing radial velocity techniques and transit photometry have detected thousands of planet-hosting stars in the Milky Way. With so many planets discovered,…
MAGNETIC ACTIVITY CYCLES IN THE EXOPLANET HOST STAR ϵ ERIDANI
- T. Metcalfe, A. Buccino, S. Basu
- Physics, Geology
- 18 December 2012
The active K2 dwarf ϵ Eri has been extensively characterized both as a young solar analog and more recently as an exoplanet host star. As one of the nearest and brightest stars in the sky, it…
A possible activity cycle in Proxima Centauri
- C. Cincunegui, R. D'iaz, P. Mauas
- Physics
- 20 March 2007
Context. Several late-type stars present activity cycles resembling the Solar one. This fact has been observed mostly in stars ranging from F to K, i.e., in stars with a radiative core and an outer…
Mg I as a probe of the solar chromosphere: the atomic model
This paper presents a complete atomic model for Mg I line synthesis, where all the atomic parameters are based on recent experimental and theoretical data. It is shown how the computed profiles at…
The MUSCLES Treasury Survey. IV. Scaling Relations for Ultraviolet, Ca ii K, and Energetic Particle Fluxes from M Dwarfs
- A. Youngblood, K. France, M. Vieytes
- Physics, Geology
- 11 May 2017
Characterizing the UV spectral energy distribution (SED) of an exoplanet host star is critically important for assessing its planet’s potential habitability, particularly for M dwarfs, as they are…
...
...