107 citations · 192 across the 9 of their papers we have counts for
9 papers · 1 filter
On producers of cosmic organic compounds: exploring the boron abundance in lithium-rich K giant stars
N. A. Drake, R. de la Reza, V. V. Smith +1
The element boron belongs, together with lithium and beryllium, to a known trio of important elements for the study of evolutionary processes in low mass stars. Because B is the le…
Weak Magnetic Fields in Two Herbig Ae Systems: The SB2 AK Sco and the Presumed Binary HD 95881
S. P. Järvinen, T. A. Carroll, S. Hubrig +9
We report the detection of weak mean longitudinal magnetic fields in the Herbig Ae double-lined spectroscopic binary AK Sco and in the presumed spectroscopic Herbig Ae binary HD958…
Spectroscopic signatures of magnetospheric accretion in Herbig Ae/Be stars. I. The case of HD101412
M. Schöller, M. A. Pogodin, J. A. Cahuasqui +10
Models of magnetically-driven accretion and outflows reproduce many observational properties of T Tauri stars. This concept is not well established for the more massive Herbig Ae/B…
HARPS spectropolarimetry of three sharp-lined Herbig Ae stars: New insights
S. P. Järvinen, T. A. Carroll, S. Hubrig +5
Several arguments have been presented that favour a scenario in which the low detection rate of magnetic fields in Herbig Ae stars can be explained by the weakness of these fields…
The Magnetic Fields at the Surface of Active Single G-K Giants
M. Aurière, R. Konstantinova-Antova, C. Charbonnel +15
We investigate the magnetic field at the surface of 48 red giants selected as promising for detection of Stokes V Zeeman signatures in their spectral lines. We use the spectropolar…
Abundance analysis, spectral variability, and search for the presence of a magnetic field in the typical PGa star HD19400
S. Hubrig, F. Castelli, J. F. Gonzalez +6
The aim of this study is to carry out an abundance determination, to search for spectral variability and for the presence of a weak magnetic field in the typical PGa star HD19400.…
Establishing the link between HgMn and PGa stars
N. A. Drake, S. Hubrig, M. Schoeller +4
We discuss most recent spectroscopic and spectropolarimetric observations of the star HD 19400 representative of the group of PGa stars. Our high-spectral-resolution study of abund…
Chemical analysis of giant stars in the young open cluster NGC 3114
O. J. Katime Santrich, C. B. Pereira, N. A. Drake
Context: Open clusters are very useful targets for examining possible trends in galactocentric distance and age, especially when young and old open clusters are compared. Aims: We…
CP and related phenomena in the context of Stellar Evolution
J. Braithwaite, T. Akgün, E. Alecian +13
We review the interaction in intermediate and high mass stars between their evolution and magnetic and chemical properties. We describe the theory of Ap-star `fossil' fields, befor…