Results 21 to 30 of about 426,951 (145)
The Carbon-dependent Binary Frequency of CEMP-no Stars
The Astrophysical JournalStudies of the oldest and most metal-poor stars in the Milky Way confirm a common chemical signature of high carbon abundances and subsolar neutron-capture enrichment.
John D. Dixon +17 more
doaj +3 more sources
Ba Isotope Ratio in CEMP-s and CEMP-rs Stars as a Signature of s-Process and i-Process
GalaxiesWe present a spectroscopic analysis of three carbon-enhanced metal-poor (CEMP) stars of type CEMP-s and CEMP-rs and determine their non-local thermodynamic equilibrium (NLTE) abundances of Ba and the fractions of the odd Ba isotopes (Fodd). We found Fodd
Tatyana Sitnova, Lyudmila Mashonkina
doaj +3 more sources
Exploring the SDSS Dataset with Linked Scatter Plots: I. EMP, CEMP, and CV Stars. [PDF]
Astrophys J Suppl Ser, 2017 We present the results of a search for EMP, CEMP, and cataclysmic variable stars using a new exploration tool based on linked scatter plots (LSPs). Our approach is especially designed to work with very large spectrum data sets such as the SDSS, LAMOST ...
Carbon DF, Henze C, Nelson BC.
europepmc +2 more sources
THE EVOLVED PULSATING CEMP STAR HD 112869 [PDF]
The Astrophysical Journal, 2015 ABSTRACT Radial velocity measurements, BVR C photometry, and high-resolution spectroscopy in the wavelength region from blue to near-infrared are employed in order to clarify the evolutionary status of the ...
Laimons Začs +6 more
openaire +2 more sources
Spectroscopic Study of Ba and CEMP-s Stars: Mass Distribution of AGB Progenitors
The Astronomical Journal, 2023 We have performed detailed high-resolution spectroscopic analysis on seven metal-poor stars (BD+75 348, BD+09 3019, HD238020, HE0319–0215, HE0507–1653, HE0930–0018, HE1023–1504) and derived their atmospheric parameters T _eff , log g , [Fe/H], and ...
Partha Pratim Goswami, Aruna Goswami
doaj +1 more source
Clues on the first stars from CEMP-no stars [PDF]
Proceedings of the International Astronomical Union, 2015 AbstractThe material used to form the CEMP-no stars presents signatures of processing by the CNO cycle and by He-burning from a previous stellar generation called spinstars. We compare the composition of the ejecta (wind + supernova) of a spinstar model to observed abundances of CEMP-no stars.
{Choplin} A. +5 more
openaire +3 more sources
Insights on the First Stars from CEMP-no Stars [PDF]
Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 2017 info:eu-repo/semantics ...
{Choplin} A. +5 more
openaire +4 more sources
The Pristine Inner Galaxy Survey (PIGS) III: Carbon-enhanced metal-poor stars in the bulge [PDF]
, 2021 The most metal-deficient stars hold important clues about the early buildup and chemical evolution of the Milky Way, and carbon-enhanced metal-poor (CEMP) stars are of special interest. However, little is known about CEMP stars in the Galactic bulge.
Navarro J. F. +17 more
core +4 more sources
The i-process and CEMP-r/s stars [PDF]
, 2014 © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. We investigate whether the anomalous elemental abundance patterns in some of the C-enhanced metal-poor-r/s (CEMP-r/s) stars are ...
Pignatari, M. +22 more
core +5 more sources
GHOST Commissioning Science Results: Identifying a New Chemically Peculiar Star in Reticulum II
The Astrophysical Journal, 2023 The Gemini High-resolution Optical SpecTrograph (GHOST) is the newest high-resolution spectrograph to be developed for a large-aperture telescope, recently deployed and commissioned at the Gemini-South telescope.
Christian R. Hayes +82 more
doaj +1 more source