Results 41 to 50 of about 243,965 (256)

Parent body histories recorded in Rumuruti chondrite sulfides: Implications for the onset of oxidized, sulfur‐rich core formation

open access: yesMeteoritics &Planetary Science, Volume 58, Issue 3, Page 383-404, March 2023., 2023
Abstract Models of planetary core formation beginning with melting of Fe,Ni metal and troilite are not readily applicable to oxidized and sulfur‐rich chondrites containing only trace quantities of metal. Cores formed in these bodies must be dominated by sulfides.
Samuel D. Crossley   +4 more
wiley   +1 more source

The Nature and Frequency of Outflows from Stars in the Central Orion Nebula Cluster [PDF]

open access: yes, 2015
Recent Hubble Space Telescope images have allowed the determination with unprecedented accuracy of motions and changes of shocks within the inner Orion Nebula.
Ferland, G. J.   +5 more
core   +3 more sources

Prussian Blue: Chemistry, Commerce, and Colour in Eighteenth‐Century Paris

open access: yesArt History, Volume 46, Issue 1, Page 154-186, February 2023., 2023
This essay reconsiders the story of a pigment. Prussian blue, discovered at the beginning of the eighteenth century, is often described as a revolutionary colour that instantly transformed painters’ palettes and practices. Grounded in a ‘thick description’ of the pigment's history in Paris, this article challenges the legendary account of Prussian blue
Charlotte Guichard   +2 more
wiley   +1 more source

Intrusive Magmatism Strongly Contributed to the Volatile Release Into the Atmosphere of Early Earth

open access: yesGeochemistry, Geophysics, Geosystems, Volume 23, Issue 12, December 2022., 2022
Abstract Magmatic volatile release was crucial for the build‐up and composition of the early atmosphere and thus for the origin and evolution of life. Even though the rate of intrusive to extrusive magma production on Earth is high, intrusive volatile release is commonly neglected in studies modeling the composition of the early atmosphere.
Sara Vulpius, Lena Noack
wiley   +1 more source

EVOLUTION OF THE CRAB NEBULA RADIO EMISSION

open access: yesOdessa Astronomical Publications, 2017
In 1977-1992 the flux density of the Crab Nebula in respect to Orion Nebula was measured at the frequency of 927 MHz with the same 10-m radio telescope.
E. N. Vinyajkin
doaj   +1 more source

Global X-ray properties of the Orion Nebula region [PDF]

open access: yes, 2005
Based on the Chandra Orion Ultradeep Project (COUP) observation, we establish the global X-ray properties of the stellar population associated with the Orion Nebula.
Augustus Muench   +11 more
core   +3 more sources

Complex molecules in the Orion Kleinmann-Low nebula

open access: yesBIO Web of Conferences, 2014
In the framework of the delivery to the early Earth of extraterrestrial molecules, we have studied complex molecular species toward the Orion Kleinmann-Low nebula. This nebula is rich in molecules as well as in nascent stars and planetary systems.
Despois D.   +7 more
doaj   +1 more source

Near-infrared Circular Polarization Images of NGC 6334-V [PDF]

open access: yes, 2013
We present results from deep imaging linear and circular polarimetry of the massive star-forming region NGC 6334-V. These observations show high degrees of circular polarization (CP), as much as 22% in the Ks band, in the infrared nebula associated with ...
Buschermöhle   +14 more
core   +2 more sources

When the tale comes true: multiple populations and wide binaries in the Orion Nebula Cluster [PDF]

open access: yesAstronomy & Astrophysics, 2019
Context. Recently published high-quality OmegaCAM photometry of the 3 × 3 deg around the Orion Nebula Cluster (ONC) in r, and i filters revealed three well-separated pre-main sequences in the color-magnitude diagram (CMD).
T. Jeřábková   +7 more
semanticscholar   +1 more source

Large Scale Flows from Orion-South [PDF]

open access: yes, 2007
Multiple optical outflows are known to exist in the vicinity of the active star formation region called Orion-South (Orion-S). We have mapped the velocity of low ionization features in the brightest part of the Orion Nebula, including Orion-S, and imaged
C. R. O'Dell   +16 more
core   +2 more sources

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