Results 31 to 40 of about 1,003,844 (306)
Abundance and abundance change in the world's parrots [PDF]
Ibis, 2015 Estimates of population density and abundance change (differences in density or encounter rates across land uses or time periods) form the cornerstone of much of our knowledge of species' responses to environmental conditions, extinction risks and potential conservation actions. Gathering baseline data on abundance of the world's c. 10 000 bird species
Stuart J. Marsden, Kay Royle
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Integral Field Spectroscopy of Planetary Nebulae with MUSE
Galaxies, 2020 The Multi-Unit Spectroscopic Explorer (MUSE) is a large integral field unit mounted on the ESO Very Large Telescope. Its spatial (60 arcsecond field) and wavelength (4800–9300Å) coverage is well suited to detailed imaging spectroscopy of extended ...
Jeremy R. Walsh, Ana Monreal-Ibero
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Oceanographic Literature Review, 1996 We describe a new program for calculating algal class abundances from measurements of chlorophyll and carotenoid pigments determined by high-performance liquid chromatography (HPLC).
M. Mackey +3 more
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The Elemental Abundances (with Uncertainties) of the Most Earth-like Planet [PDF]
, 2017 To first order, the Earth as well as other rocky planets in the Solar System and rocky exoplanets orbiting other stars, are refractory pieces of the stellar nebula out of which they formed.
Haiyang S. Wang +2 more
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Planetary Nebulae: Abundances and Abundance Gradients [PDF]
, 2000 In this work, a review is given of some recent results and problems involved in the determination of chemical abundances of galactic planetary nebulae, particularly regarding disk and bulge objects.
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ASPCAP: THE APOGEE STELLAR PARAMETER AND CHEMICAL ABUNDANCES PIPELINE [PDF]
, 2015 The Apache Point Observatory Galactic Evolution Experiment (APOGEE) has built the largest moderately high-resolution (R ≈ 22,500) spectroscopic map of the stars across the Milky Way, and including dust-obscured areas.
A. G. García Pérez +29 more
semanticscholar +1 more source
The solar wind heavy ion composition in the ascending phases of the solar cycles 23 and 25
Frontiers in Astronomy and Space SciencesThe approximately 11-year solar cycle has been shown to impact the heavy ion composition of the solar wind, even when accounting for streams of differing speeds; however, the heavy ion composition observed between the same specific phases of a past solar
D. T. Carpenter +8 more
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Julius-Kühn-Archiv, 2013 Agricultural landscapes have crucial functions for biodiversity conservation. Contrary to the goals of biodiversity protection the habitat functions and the biological diversity are deteriorating, especially in arable areas.
Hoffmann, Jörg +5 more
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Chemical fingerprints of He-sdO stars
Open Astronomy, 2018 The chemical composition of helium-rich hot subluminous O stars plays an important role to understand and model their formation history. We present a spectroscopic analysis of four He-sdO stars,CD-31° 4800, [CW83] 0904- 02, LSS 1274 and LS IV +10° 9. The
Schindewolf Markus +5 more
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Chemical Composition of RM_1-390 - Large Magellanic Cloud Red Supergiant [PDF]
Journal of Astronomy and Space Sciences, 2017 A high resolution spectroscopic observation of the red supergiant star RM_1-390 in the Large Magellanic Cloud was made from a 3.6 m telescope at the European Southern Observatory. Spectral resolving power was R=20,000, with a signal-to-noise ratio S/N >
Alexander V. Yushchenko +5 more
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