122 citations · 376 across the 13 of their papers we have counts for
13 papers
A blue depression in the optical spectra of M dwarfs
Hugh R. A. Jones, Yakiv Pavlenko, Yuri Lyubchik +3
A blue depression is found in the spectra of M dwarfs from 4000 to 4500A. This depression shows an increase toward lower temperatures though is particularly sensitive to gravity an…
AlH lines in the blue spectrum of Proxima Centauri
Yakiv V. Pavlenko, Jonathan Tennyson, Sergei N. Yurchenko +4
The recently-computed ExoMol line lists for isotopologues of AlH are used to analyse the blue spectrum (4000-4500 Å) of Proxima Cen (M5.5 V). Comparison of the observed and compute…
Metallicity, temperature, and gravity scales of M subdwarfs
N. Lodieu, F. Allard, C. Rodrigo +5
The aim of the project is to define a metallicity/gravity/temperature scale vs spectral types for metal-poor M dwarfs. We obtained intermediate-resolution ultraviolet (R~3300), opt…
Masses, Oxygen and Carbon abundances in CHEPS dwarf stars
Y. V. Pavlenko, B. M. Kaminsky, J. S. Jenkins +3
Context. We report the results from the determination of stellar masses, carbon and oxygen abundances in the atmospheres of 107 stars from the CHEPS program. Our stars are drawn fr…
A hot Jupiter transiting a mid-K dwarf found in the pre-OmegaCam Transit Survey
J. Koppenhoefer, R. P. Saglia, L. Fossati +13
We describe the pre-OmegaTranS project, a deep survey for transiting extra-solar planets in the Carina region of the Galactic Disk. In 2006-2008 we observed a single dense stellar…
A spectral differential approach to characterizing low-mass companions to late-type stars
N. M. Kostogryz, M. Kuerster, T. M. Yakobchuk +2
In this paper, we develop a spectral differential technique with which the dynamical mass of low-mass companions can be found. This method aims at discovering close companions to l…