Results 41 to 50 of about 229,704 (266)
Intrusive Magmatism Strongly Contributed to the Volatile Release Into the Atmosphere of Early Earth
Geochemistry, 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
Deciphering the 3D Orion Nebula-I: Expanding Shells in the Huygens Region [PDF]
Astrophysical Journal, 2020 Based on imaging and spectroscopic data, we develop a 3D model for the Huygens Region of the Orion Nebula. Ori C, the hottest star in the Trapezium, is surrounded by a wind-blown Central Bubble that opens SW into the Extended Orion Nebula.
C. O’Dell, N. Abel, G. Ferland
semanticscholar +1 more source
Iron Hydride in the Earth's Inner Core and Its Geophysical Implications
Geochemistry, Geophysics, Geosystems, Volume 23, Issue 12, December 2022., 2022 Abstract Hydrogen is potentially a key light element in the Earth's core. Determining the stability of iron hydride is essential for Earth's core mineralogy applications. We investigated the thermal stabilities of a range of Fe‐H binaries at core P‐T conditions. It is concluded that face‐centered cubic phase FeH is stable in the Earth's inner core. The
Hua Yang, Joshua M. R. Muir, Feiwu Zhang
wiley +1 more source
A New Look at the Molecular Gas in M42 and M43: Possible Evidence for Cloud–Cloud Collision that Triggered Formation of the OB Stars in the Orion Nebula Cluster [PDF]
Astrophysical Journal, 2017 The Orion Nebula Cluster toward the H ii region M42 is the most outstanding young cluster at the smallest distance (410 pc) among the rich high-mass stellar clusters.
Y. Fukui +12 more
semanticscholar +1 more source
Hubble Space Telescope Astrometry in the Orion Nebula Cluster: Census of Low-mass Runaways [PDF]
Astronomical Journal, 2020 We present a catalog of high-precision proper motions in the Orion Nebula Cluster (ONC), based on Treasury Program observations with the Hubble Space Telescope’s (HST) ACS/WFC camera.
I. Platais +8 more
semanticscholar +1 more source
Secular Evolution of Continents and the Earth System
Reviews of Geophysics, Volume 60, Issue 4, December 2022., 2022 Abstract Understanding of secular evolution of the Earth system is based largely on the rock and mineral archive preserved in the continental lithosphere. Based on the frequency and range of accessible data preserved in this record, we divide the secular evolution into seven phases: (a) “Proto‐Earth” (ca. 4.57–4.45 Ga); (b) “Primordial Earth” (ca. 4.45–
Peter A. Cawood +6 more
wiley +1 more source
Runaway Young Stars near the Orion Nebula [PDF]
Astrophysical Journal, 2019 The star-forming region of the Orion Nebula (ONC) is ideal to study the stellar dynamics of young stars in a clustered environment. Using Gaia DR2 we search for pre-main sequence stars with unusually high proper motions that may be representative of a ...
Aidan McBride, M. Kounkel
semanticscholar +1 more source
Soil Science Society of America Journal, Volume 86, Issue 6, Page 1553-1570, November/December 2022., 2022 Abstract In headwater catchments, surface groundwater discharge areas have unique soil biogeochemistry and can be hot spots for solute contribution to streams. Across the northeastern United States, headwater hillslopes with surface groundwater discharge were enriched in soil Mn, including Watershed 3 of Hubbard Brook Experimental Forest, New Hampshire.
Rebecca R. Bourgault +4 more
wiley +1 more source
EVOLUTION OF THE CRAB NEBULA RADIO EMISSION
Odessa 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
A VLBA Survey of Radio Stars in the Orion Nebula Cluster. II. Astrometry [PDF]
, 2020 From Very Long Baseline Array (VLBA) observations we previously identified a population of 123 young stellar systems with nonthermal radio emission toward the core of the Orion Nebula Cluster (ONC).
S. Dzib, J. Forbrich, M. Reid, K. Menten
semanticscholar +1 more source