EVIDENCE FOR CLOUD–CLOUD COLLISION AND PARSEC-SCALE STELLAR FEEDBACK WITHIN THE L1641-N REGION [PDF]
, 2011 We present high spatial resolution 12CO (J = 1–0) images taken by the Nobeyama 45 m telescope toward a 48′ × 48′ area, including the L1641-N cluster. The effective spatial resolution of the maps is 21″, corresponding to 0.04 pc at a distance of 400 pc. A
F. Nakamura +10 more
semanticscholar +1 more source
Gaia stellar kinematics in the head of the Orion A cloud: runaway stellar groups and gravitational infall [PDF]
Monthly notices of the Royal Astronomical Society, 2019 This work extends previous kinematic studies of young stars in the head of the Orion A cloud (OMC-1/2/3/4/5). It is based on large samples of infrared, optical, and X-ray selected pre-main-sequence stars with reliable radial velocities and Gaia-derived
K. Getman +5 more
semanticscholar +1 more source
, 1998 WFPC-2 images are used to study the central structure of M31, M32, and M33. The dimmer peak, P2, of the M31 double nucleus is centered on the bulge to 0.1", implying that it is the dynamical center of M31.
Bacon R. +11 more
core +2 more sources
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
Inelastic Mg+H collision data for non-LTE applications in stellar atmospheres [PDF]
, 2010 Rate coefficients for inelastic Mg+H collisions are calculated for all transitions between the lowest seven levels and the ionic state (charge transfer), namely Mg(3s(2) S-1, 3s3p P-3, 3s3p P-1, 3s4s S-3, 3s4s S-1, 3s3d D-1, 3s4p P-3)+H(1s) and Mg+(3s S ...
P. Barklem +4 more
semanticscholar +1 more source
Observational Support for Massive Black Hole Formation Driven by Runaway Stellar Collisions in Galactic Nuclei [PDF]
Astrophysical Journal, 2020 We explore a scenario for massive black hole formation driven by stellar collisions in galactic nuclei, proposing a new formation regime of global instability in nuclear stellar clusters triggered by runaway stellar collisions.
A. Escala
semanticscholar +1 more source
Wave Conversion, Decay, and Heating in a Partially Ionized Two-fluid Magneto-atmosphere
The Astrophysical Journal, 2023 A ray-theoretic phase-space description of linear waves in a two-fluid (charges and neutrals) magnetized plasma is used to calculate analytic decay rates and mode transmission and conversion coefficients between fast and slow waves in two dimensions due ...
Paul S. Cally, M. M. Gómez-Míguez
doaj +1 more source
A new Monte Carlo code for star cluster simulations: II. Central black hole and stellar collisions [PDF]
, 2002 We have recently written a new code to simulate the long term evolution of spherical clusters of stars. It is based on the pioneering Monte Carlo scheme proposed by Henon in the 70's. Our code has been devised in the specific goal to treat dense galactic
Benz, Willy, Freitag, Marc
core +2 more sources
Inelastic Na+H collision data for non-LTE applications in stellar atmospheres (Research Note) [PDF]
, 2010 Rate coefficients for inelastic Na+H collisions are calculated for all transitions between the ten levels up to and including the ionic state (ion-pair production), namely Na(3s,3p,4s,3d,4p,5s,4d,4f,5p)+H(1s) and Na + +H − . The calculations are based on
P. Barklem +3 more
semanticscholar +1 more source
Blue Stragglers After the Main Sequence [PDF]
, 2008 We study the post-main sequence evolution of products of collisions between main sequence stars (blue stragglers), with particular interest paid to the horizontal branch and asymptotic giant branch phases.
Alison Sills +22 more
core +1 more source