173 citations · 499 across the 8 of their papers we have counts for
8 papers
Unique distant classical Cepheid OGLE GD-CEP-1353 with anomalously high abundances of s- and r-process elements
V. V. Kovtyukh, S. M. Andrievsky, K. Werner +1
While looking for recently discovered distant Cepheids with an interesting chemical composition, we noticed one star (OGLE GD-CEP-1353) with extremely large equivalent widths of sp…
New insights on Ba over-abundance in open clusters. Evidence for the intermediate neutron-capture process at play?
T. Mishenina, M. Pignatari, G. Carraro +6
Recently an increasing number of studies were devoted to measure the abundances of neutron-capture elements heavier than iron in stars belonging to Galactic Open Clusters (OCs). OC…
The Origin of the Young Pulsar PSR J0826+2637 and Its Possible Former Companion HIP 13962
N. Tetzlaff, B. Dincel, R. Neuhaeuser +1
We aim to identify the birth place of the young pulsar PSR J0826+2637 in order to determine its kinematic age and give constraints on its radial and spatial (kick) velocity. Since…
Accurate luminosities from the oxygen 7771-4 A triplet and the fundamental parameters of F-G supergiants
V. V. Kovtyukh, N. Gorlova, S. I. Belik
The oxygen 7771-4 A triplet is a good indicator of luminosity in A-G supergiants. However, its strength also depends on other atmospheric parameters. In this study, we present the…
Galactic restrictions on iron production by various Types of supernovae
I. A. Acharova, Yu. N. Mishurov, V. V. Kovtyukh
We propose a statistical method for decomposition of contributions to iron production from various sources: supernovae Type II and the subpopulations of supernovae Type Ia -- promp…
Line profile variations in classical Cepheids. Evidence for non-radial pulsations?
V. V. Kovtyukh, S. M. Andrievsky, R. E. Luck +1
We have investigated line profiles in a large sample of Cepheid spectra, and found four stars that show unusual (for Cepheids) line profile structure (bumps or/and asymmetries). Th…