On the chemical abundance differences between the solar twin visual binary system 16 Cygni A and B
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DOI: 10.1002/asna.20230174
Abstract: The visual binary system 16 Cyg A+B consists of similar solar twins, but a planetary companion is detected only in B. An intensive spectroscopic differential analysis is carried out to the Sun, 16 Cyg A,… read more here.
Keywords: differences solar; binary system; visual binary; abundance differences ... See more keywords
Extreme chemical abundance ratio suggesting an exotic origin for an ultradiffuse galaxy
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DOI: 10.1093/mnras/stz252
Abstract: Ultra diffuse galaxies are a population of extended galaxies but with relatively low luminosities. The origin of these objects remains unclear, largely due to the observational challenges of the low surface brightness Universe. We present… read more here.
Keywords: ratio suggesting; abundance ratio; ratio; chemical abundance ... See more keywords
Small-scale chemical abundance analysis in a blue compact dwarf galaxy SBS 1415+437
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz343
Abstract: We use integral field spectroscopic (IFS) observations from Gemini Multi-Object Spectrograph-North (GMOS-N) to analyse the ionised gas in the principal star-forming region in the blue compact dwarf galaxy SBS 1415+437. The IFS data enable us… read more here.
Keywords: compact dwarf; blue compact; chemical; chemical abundance ... See more keywords