Results 71 to 80 of about 239,171 (281)
A Tale of Three Cities: OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster [PDF]
, 2017 As part of the Accretion Discs in H$\alpha$ with OmegaCAM (ADHOC) survey, we imaged in r, i and H-alpha a region of 12x8 square degrees around the Orion Nebula Cluster.
G. Beccari +18 more
semanticscholar +1 more source
Evidence for feedback and stellar-dynamically regulated bursty star cluster formation: the case of the Orion Nebula Cluster [PDF]
, 2018 (abridged) A scenario for the formation of multiple co-eval populations separated in age by about 1 Myr in very young clusters (VYCs, ages less than 10 Myr) and with masses in the range 600-20000 Msun is outlined.
P. Kroupa +4 more
semanticscholar +1 more source
Stellar Proper Motions in the Orion Nebula Cluster [PDF]
Astronomical Journal, 2018 The Orion Nebula Cluster (ONC) is the nearest site of ongoing massive star formation, which allows us to study the kinematics and dynamics of the region in detail and constrain star formation theories.
Dongwon Kim +7 more
semanticscholar +1 more source
The distance to the Orion Nebula cluster [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 Abstract The distance to the Orion Nebula cluster (ONC) is estimated using the rotational properties of its low-mass pre-main-sequence (PMS) stars. Rotation periods, projected equatorial velocities and distance-dependent radius estimates are used to form an observational sin i distribution (where i is the axial inclination), which is ...
openaire +3 more sources
A Search for Intermediate-separation Low-mass Binaries in the Orion Nebula Cluster [PDF]
Astrophysical Journal, 2019 We present the results of a binary population study in the Orion Nebula Cluster (ONC) using archival Hubble Space Telescope (HST) data obtained with the Advanced Camera for Surveys in Johnson V filter (HST Proposal 10246, PI M. Robberto).
Matthew de Furio +5 more
semanticscholar +1 more source
Observing and Reducing IFUs: INTEGRAL and PMAS—Properties of the Ionized Gas in HH 202
Advances in Astronomy, 2014 The reduction of integral field spectroscopy (IFS) data requires several stages and many repetitive operations to convert raw data into, typically, a large number of spectra.
Luis López-Martín
doaj +1 more source
The Astrophysical Journal, 2023 The stellar cluster environment is expected to play a central role in the evolution of circumstellar disks. We use thermochemical modeling to constrain the dust and gas masses, disk sizes, UV and X-ray radiation fields, viewing geometries, and central ...
Ryan D. Boyden, Josh A. Eisner
doaj +1 more source
The Structure of the Orion Nebula in the Direction of θ1 Ori C [PDF]
Astrophysical Journal, 2019 We have used existing optical emission and absorption lines, [C ii] emission lines, and H i absorption lines to create a new model for a central column of material near the Trapezium region of the Orion Nebula.
N. Abel, G. Ferland, C. O’Dell
semanticscholar +1 more source
The Astrophysical Journal, 2023 Modern X-ray telescopes have detected hundreds of thousands of X-ray sources in the universe. However, current methods to classify these sources using the X-ray data themselves suffer problems—detailed X-ray spectroscopy of individual sources is too time
Pavan R. Hebbar, Craig O. Heinke
doaj +1 more source
Binary stars in the Orion Nebula Cluster [PDF]
Astronomy & Astrophysics, 2006 AbstractWe report on a high-spatial-resolution survey for binary stars in the periphery of the Orion Nebula Cluster, at 5–15 arcmin (0.65 – 2 pc) from the cluster center. We observed 228 stars with adaptive optics systems, in order to find companions at separations of 0.13 – 1.12 arcsec (60 – 500 AU), and detected 13 new binaries.
Monika G. Petr-Gotzens +7 more
openaire +7 more sources