Paleoproterozoic sterol biosynthesis and the rise of oxygen
Sign Up to like & getrecommendations! Published in 2017 at "Nature"
DOI: 10.1038/nature21412
Abstract: Natural products preserved in the geological record can function as ‘molecular fossils’, providing insight into organisms and physiologies that existed in the deep past. One important group of molecular fossils is the steroidal hydrocarbons (steranes),… read more here.
Keywords: biosynthesis; oxygen; sterol biosynthesis; gyr ago ... See more keywords
Early formation and recent starburst activity in the nuclear disk of the Milky Way
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DOI: 10.1038/s41550-019-0967-9
Abstract: The nuclear disk is a dense stellar structure at the centre of the Milky Way, with a radius of ~150 pc (ref. 1 ). It has been a place of intense star formation in the… read more here.
Keywords: milky way; formation; gyr ago; way ... See more keywords
A 2–3 billion year old major merger paradigm for the Andromeda galaxy and its outskirts
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx3343
Abstract: Recent observations of our neighbouring galaxy M31 have revealed that its disk was shaped by widespread events. The evidence for this includes the high dispersion ($V/\sigma$ $\le$ 3) of stars older than 2 Gyr, and… read more here.
Keywords: galaxy; merger; major merger; billion year ... See more keywords