Results 31 to 40 of about 563,924 (339)
Evaporation before disruption: comparing timescales for Jovian planets in star-forming regions [PDF]
, 2022 Simulations show that the orbits of planets are readily disrupted in dense star-forming regions; planets can be exchanged between stars, become free-floating and then be captured by other stars. However, dense star-forming regions also tend to be populous, containing massive stars that emit photoionising radiation, which can evaporate the gas in ...
arxiv +1 more source
The Astrophysical Journal, 2023 We explore the potential of the Gaussian mixture model (GMM), an unsupervised machine-learning method, to identify coherent physical structures in the interstellar medium.
M. Tiwari +16 more
doaj +1 more source
The Lifetimes of Phases in High-Mass Star-Forming Regions [PDF]
2017ApJ, 835, 263B, 2017 High-mass stars form within star clusters from dense, molecular regions, but is the process of cluster formation slow and hydrostatic or quick and dynamic? We link the physical properties of high-mass star-forming regions with their evolutionary stage in a systematic way, using Herschel and Spitzer data.
arxiv +1 more source
Molecular line study of massive star forming regions from the RMS survey [PDF]
MNRAS, 2014, 440, 1213, 2016 In this paper we selected a sample of massive star forming regions from the Red MSX Source (RMS) survey, to study star formation activities (mainly outflow and inflow signatures).
arxiv +1 more source
The star-forming region in Cepheus A
The Astrophysical Journal, 1984 Resultats d'observations de Cep A a 2,1 cm et 6 cm. La condensation contient deux chapelets de regions H II d'environ 0,1 pc de longueur, produites par environ 14 etoiles ressemblant aux etoiles B3 de la sequence principale. Les regions H II sont tres jeunes, ∼10 3 ans et on suggere que l'environnement est controle par un champ ...
Hughes, V.A., Wouterloot, J.G.A.
openaire +4 more sources
The metallicity of circumnuclear star-forming regions [PDF]
, 2008 We present a spectrophotometric study of circumnuclear star forming regions (CNSFR) in the early type spiral galaxies: NGC 2903, NGC 3351 and NGC 3504, all of them of over solar metallicity according to standard empirical calibrations. A detailed determination of their abundances is made after careful subtraction of the very prominent underlying ...
A. I. Díaz +3 more
openaire +3 more sources
CHEMICAL EVOLUTION OF STAR-FORMING REGIONS
Annual Review of Astronomy and Astrophysics, 1998 ▪ Abstract Recent advances in the understanding of the chemical processes that occur during all stages of the formation of stars, from the collapse of molecular clouds to the assemblage of icy planetesimals in protoplanetary accretion disks, are reviewed.
van Dishoeck, Ewine F. +1 more
openaire +6 more sources
Dynamical evolution of fractal structures in star-forming regions [PDF]
, 2020 The Q-parameter is used extensively to quantify the spatial distributions of stars and gas in star-forming regions as well as older clusters and associations. It quantifies the amount of structure using the ratio of the average length of a minimum spanning tree, mbar, to the average length within the complete graph, sbar.
arxiv +1 more source
The Astrophysical Journal, 2023 We present a comprehensive analysis of the Galactic mid-infrared bubble [HKS2019] E70 (E70) by adopting a multiwavelength approach to understand the physical environment and star formation scenario around it.
Aayushi Verma +10 more
doaj +1 more source
XUE: Molecular Inventory in the Inner Region of an Extremely Irradiated Protoplanetary Disk
The Astrophysical Journal Letters, 2023 We present the first results of the eXtreme UV Environments (XUE) James Webb Space Telescope (JWST) program, which focuses on the characterization of planet-forming disks in massive star-forming regions.
María Claudia Ramírez-Tannus +26 more
doaj +1 more source