Results 81 to 90 of about 407,067 (139)
Food and Energy Security, Volume 13, Issue 4, July/August 2024.Abstract Decreasing antenna size is considered a potential option for improving photosynthesis and increasing yield potential. Reducing chlorophyll content has been employed as a strategy to decrease antenna size. One of the commonly mentioned advantages of this approach is its ability to enhance crop nitrogen use efficiency (NUE); however, there is ...
Linxiong Mao +4 more
wiley +1 more source
Carbon-Enhanced Metal-Poor (CEMP) stars [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractA significant fraction of metal-poor stars have large over-abundances of carbon, and are called Carbon-Enhanced Metal-Poor (CEMP) stars. Most of CEMP stars also show excesses of heavy neutron-capture elements like Ba, indicating that their origin is the nucleosynthesis in AGB stars.
openaire +1 more source
What helium and lithium can tell us about CEMP stars? [PDF]
, 2017 We show that the peculiar surface abundance patterns of Carbon Enhanced Metal Poor (CEMP) stars has been inherited from material having been processed by H- and He-burning phases in a previous generation of stars (hereafter called the "Source Stars”). In
Chiappini, Cristina +6 more
core
Evaluating Classifications of Extremely Metal-poor Candidates Selected from Gaia XP Spectra
The Astronomical JournalExtremely metal-poor stars are intrinsically rare, but emerging methods exist to accurately classify them from all-sky Gaia XP low-resolution spectra.
Riley Thai +4 more
doaj +1 more source
Ecology and Evolution, Volume 14, Issue 3, March 2024.In the Windmill Islands, it is not well‐known what drives Adélie penguin reproductive success. Here, we utilised remotely operated cameras to determine the drivers of this and found that adult behaviour largely influences nest survival and reproductive success.
Madi J. McLatchie +3 more
wiley +1 more source
Three extremely metal-poor stars: discovery of a new CEMP-no star
Monthly Notices of the Royal Astronomical SocietyABSTRACT We have conducted detailed high-resolution spectroscopic studies on three extremely metal-poor (EMP) stars HE 0401–0138, HE 1153–0518, and HE 1246–1344. For the stars HE 0401–0138 and HE 1246–1344, we have estimated the abundances of C, Na, Mg, Ca, Sc, Ti, Cr, Mn, Co, Ni, Sr, and Ba along with the upper limits for Li, O, La ...
Goswami, Partha Pratim, Goswami, Aruna
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The Astronomical JournalThe Gaia BP/RP spectra provide an excellent opportunity to search for extremely metal-poor (EMP; [M/H] ≤ –3.0) stars. In this study, we assess the potential of our Gaia BP/RP-based candidate catalog, vetting newly identified EMP candidates with higher ...
Xianhao Ye +10 more
doaj +1 more source
CEMP stars: possible hosts to carbon planets in the early Universe
, 2017 We explore the possibility of planet formation in the carbon-rich protoplanetary disks of carbon-enhanced metal-poor (CEMP) stars, possible relics of the early Universe.
Mashian, Natalie, Loeb, Abraham
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How plausible are the proposed formation scenarios of CEMP-
, 2016 CEMP-r/s stars are metal-poor stars with enhanced abundances of carbon and heavy elements associated with the slow and rapid neutron-capture process (s- and r-elements, respectively).
Zheng-Wei Liu +2 more
core +1 more source
The Astrophysical JournalWe present detailed chemical abundances of the brightest star in each of the ultrafaint dwarf galaxies Eridanus IV and Centaurus I using high-resolution Magellan/MIKE spectroscopy.
Mairéad E. Heiger +21 more
doaj +1 more source