Small Protoplanetary Disks in the Orion Nebula Cluster and OMC1 with ALMA [PDF]
Astrophysical Journal, 2021 The Orion Nebula Cluster (ONC) is the nearest dense star-forming region at ∼400 pc away, making it an ideal target to study the impact of high stellar density and proximity to massive stars (the Trapezium) on protoplanetary disk evolution.
J. Otter +7 more
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The NIKA polarimeter on science targets: Crab nebula observations at 150 GHz and dual-band polarization images of Orion Molecular Cloud OMC-1 [PDF]
EPJ Web of Conferences, 2020 We present here the polarization system of the NIKA camera and give a summary of the main results obtained and performed studies on Orion and the Crab nebula.
Ritacco A. +41 more
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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
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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
Electron densities in the Orion Nebula, II.
The Astrophysical Journal, 1958 Donald E. Osterbrock, Edith Flather
openalex +6 more sources
Protoplanetary Disks in the Orion Nebula Cluster: Gas-disk Morphologies and Kinematics as Seen with ALMA [PDF]
Astrophysical Journal, 2020 We present Atacama Large Millimeter Array CO(3 − 2) and HCO+(4 − 3) observations covering the central 1.′5 × 1.′5 region of the Orion Nebula Cluster (ONC).
R. Boyden, J. Eisner
semanticscholar +1 more source
A gravitational and dynamical framework of star formation: The Orion Nebula [PDF]
, 2021 The Orion Nebula Cluster (ONC) is the most massive region of active star formation within a kpc of the Sun. Using Gaia DR3 parallaxes and proper motions, we examine the bulk motions of stars radially and tangentially relative to the cluster center.
M. Kounkel +3 more
semanticscholar +1 more source
The Core Mass Function in the Orion Nebula Cluster Region: What Determines the Final Stellar Masses? [PDF]
, 2021 Applying dendrogram analysis to the CARMA-NRO C18O (J = 1–0) data having an angular resolution of ∼8″, we identified 692 dense cores in the Orion Nebula Cluster region. Using this core sample, we compare the core and initial stellar mass functions in the
H. Takemura +31 more
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Backscattering and Line Broadening in Orion
The Astronomical Journal, 2022 Examination of emission lines in high-velocity-resolution optical spectra of the Orion Nebula confirms that the velocity component on the red wing of the main ionization front emission line is due to backscattering in the Photon Dominated Region.
C. R. O’Dell +2 more
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HST Survey of the Orion Nebula Cluster in the H2O 1.4 μm Absorption Band. I. A Census of Substellar and Planetary-mass Objects [PDF]
Astrophysical Journal, 2020 In order to obtain a complete census of the stellar and substellar population, down to a few in the ∼1 Myr old Orion Nebula Cluster, we used the infrared channel of the Wide Field Camera 3 of the Hubble Space Telescope with the F139M and F130N filters ...
M. Robberto +17 more
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