Results 11 to 20 of about 229,704 (266)
Multiple star systems in the Orion nebula [PDF]
Astronomy & Astrophysics, 2018 This work presents an interferometric study of the massive-binary fraction in the Orion Trapezium cluster with the recently comissioned GRAVITY instrument. We observed a total of 16 stars of mainly OB spectral type.
Gravity collaboration Martina Karl +134 more
semanticscholar +10 more sources
The Integral Field View of the Orion Nebula [PDF]
Advances in Astronomy, 2014 This paper reviews the major advances achieved in the Orion Nebula through the use of integral field spectroscopy (IFS). Since the early work of Vasconcelos and collaborators in 2005, this technique has facilitated the investigation of global properties ...
Adal Mesa-Delgado
doaj +6 more sources
Which Stars Are Ionizing the Orion Nebula? [PDF]
The Astrophysical Journal, 2017 The common assumption that is the dominant ionizing source for the Orion Nebula is critically examined. This assumption underlies much of the existing analysis of the nebula.
C. O’Dell, W. Kollatschny, G. Ferland
semanticscholar +5 more sources
Variations in the Spectrum of the Orion Nebula. [PDF]
Astronomische Nachrichten, 1899 n ...
James E. Keeler
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Turbulence in the Ionized Gas of the Orion Nebula [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 In order to study the nature, origin, and impact of turbulent velocity fluctuations in the ionized gas of the Orion Nebula, we apply a variety of statistical techniques to observed velocity cubes.
S. J. Arthur, S. Medina, W. Henney
semanticscholar +5 more sources
Inhomogeneities in the Orion Nebula [PDF]
Transactions of the International Astronomical Union, 1966 F. D. Kahn
openalex +3 more sources
HCN/HNC ratio: A new chemical thermometer at 3 mm [PDF]
EPJ Web of Conferences, 2022 The gas kinetic temperature (TK) determines the physical and chemical evolution of the interstellar medium (ISM). This work explores the use of HCN/HNC (J=1–0) line ratio as new probe of the gas kinetic temperature in the molecular ISM.
Hacar Alvaro, Suri Sümeyye
doaj +1 more source
Spectrophotometry of the Orion Nebula [PDF]
Publications of the Astronomical Society of the Pacific, 1973 Observations of line and continuum strengths were made in six regions in the Orion nebula. From the observations, electron temperatures, electron densities, and chemical abundances are derived. A model for the Orion nebula is computed that agrees with the optical and radio observations of the nebula.
J. P. Simpson
openalex +4 more sources
Photoionized Herbig–Haro objects in the Orion Nebula through deep high-spectral resolution spectroscopy – I. HH 529 II and III [PDF]
, 2021 We present the analysis of physical conditions, chemical composition and kinematic properties of two bow shocks—HH 529 II and HH 529 III— of the fully photoionized Herbig-Haro object HH 529 in the Orion Nebula. The data were obtained with the Ultraviolet
J. E. Méndez-Delgado +5 more
semanticscholar +1 more source