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
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
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
semanticscholar +1 more source
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
doaj +1 more source
HST Survey of the Orion Nebula Cluster in the H2O 1.4 μm Absorption Band. II. The Substellar IMF Down to Planetary Masses [PDF]
Astrophysical Journal, 2020 We utilize the ability of the Hubble Space Telescope to probe near-infrared water absorption present in the atmosphere of low-mass stars and brown-dwarf and planetary-mass objects to create a pure sample of Orion Nebula Cluster (ONC) members, not ...
M. Gennaro, M. Robberto
semanticscholar +1 more source
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
semanticscholar +1 more source
The distance to the Orion Nebula [PDF]
Astronomy & Astrophysics, 2007 We have used the Very Long Baseline Array to measure the trigonometric parallax of several member stars of the Orion Nebula Cluster showing non-thermal radio emission. We have determined the distance to the cluster to be 414 +/- 7 pc. Our distance determination allows for an improved calibration of luminosities and ages of young stars.
Karl M. Menten +4 more
openaire +5 more sources
Explaining the Chemical Inventory of Orion KL through Machine Learning
The Astrophysical Journal, 2023 The interplay of the chemistry and physics that exists within astrochemically relevant sources can only be fully appreciated if we can gain a holistic understanding of their chemical inventories. Previous work by Lee et al.
Haley N. Scolati +4 more
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 Disk Properties in the Orion Nebula Cluster: Initial Results from Deep, High-resolution ALMA Observations [PDF]
Astrophysical Journal, 2018 We present Atacama Large Millimeter Array 850 μm continuum observations of the Orion Nebula Cluster that provide the highest angular resolution (∼0.″1 ≈ 40 au) and deepest sensitivity (∼0.1 mJy) of the region to date. We mosaicked a field containing ∼225
J. Eisner +15 more
semanticscholar +1 more source