Results 11 to 20 of about 282,229 (301)
Natural Products Containing ‘Rare’ Organophosphorus Functional Groups
Molecules, 2019 Phosphorous-containing molecules are essential constituents of all living cells. While the phosphate functional group is very common in small molecule natural products, nucleic acids, and as chemical modification in protein and peptides, phosphorous can ...
Janusz J. Petkowski +2 more
doaj +1 more source
ALMA Observations of the Young Substellar Binary System 2M1207 [PDF]
, 2017 We present ALMA observations of the 2M1207 system, a young binary made of a brown dwarf with a planetary-mass companion at a projected separation of about 40 au.
Andrews, S. +12 more
core +3 more sources
The maximum mass of planetary embryos formed in core-accretion models [PDF]
, 2017 We compute the maximum mass a growing planetary embryo can reach depending on the size of accreted planetesimals or pebbles, to infer the possibility of growing the cores of giant planets, and giant planets themselves.
Alibert, Yann
core +2 more sources
Environment International, 2021 Biomass burning (BB) is an important source of primary organic aerosols (POA). These POA contain a significant fraction of semivolatile organic compounds, and can release them into the gas phase during the dilution process in transport.
Zheng Fang +14 more
doaj +1 more source
Estimating Planetary Mass with Deep Learning [PDF]
The Astronomical Journal, 2020 Abstract While thousands of exoplanets have been confirmed, the known properties about individual discoveries remain sparse and depend on detection technique. To utilize more than a small section of the exoplanet data set, tools need to be developed to estimate missing values based on the known measurements.
Elizabeth J. Tasker +2 more
openaire +2 more sources
Properties of the Planetary Caustic Perturbation [PDF]
, 2010 Just two of 10 extrasolar planets found by microlensing have been detected by the planetary caustic despite the higher probability of planet detection relative to the central caustic which has been responsible for four extrasolar planet detections.
Albrow +23 more
core +1 more source
The Evidence for a Binary origin of the Young Planetary Nebula HB 12 [PDF]
, 2006 The young planetary nebulae play an important role in stellar evolution when intermediate- to low-mass stars (0.8 $\sim$ 8 M$_\odot$) evolve from the proto-planetary nebulae phase to the planetary nebulae phase.
Hsia, Chih Hao +2 more
core +5 more sources
ACCRETION ONTO PLANETARY MASS COMPANIONS OF LOW-MASS YOUNG STARS [PDF]
The Astrophysical Journal, 2014 Measurements of accretion rates onto planetary mass objects may distinguish between different planet formation mechanisms, which predict different accretion histories. In this Letter, we use \HST/WFC3 UVIS optical photometry to measure accretion rates onto three accreting objects, GSC06214-00210 b, GQ Lup b, and DH Tau b, that are at the planet/brown ...
Zhou, Yifan +4 more
openaire +3 more sources
Giant impact, planetary merger, and diversity of planetary-core mass [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractTransit observations indicate a large dispersion in the internal structure among the known gas giants. This is a big challenge to the conventional sequential planetary formation scenario because the diversity is inconsistent with the expectation of some well defined critical condition for the onset of gas accretion in this scenario.
S.-L. Li, C. Agnor, D. N. C. Lin
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Two Wide Planetary-Mass Companions to Solar-Type Stars in Upper Scorpius [PDF]
, 2010 At wide separations, planetary-mass and brown dwarf companions to solar type stars occupy a curious region of parameters space not obviously linked to binary star formation or solar-system scale planet formation. These companions provide insight into the
A. Kraus +50 more
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