Results 11 to 20 of about 91,576 (294)
Galactic Centre stellar winds and Sgr A* accretion [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 (ABRIDGED) We present in detail our new 3D numerical models for the accretion of stellar winds on to Sgr A*. In our most sophisticated models, we put stars on realistic orbits around Sgr A*, include `slow' winds (300 km/s), and account for radiative cooling. We first model only one phase `fast' stellar winds (1000 km/s). For wind sources fixed in space,
Cuadra, J. +3 more
openaire +6 more sources
Accretion disks in luminous young stellar objects [PDF]
The Astronomy and Astrophysics Review, 2016 71 pages, 19 figures.
BELTRAN SOROLLA, MARIA TERESA +1 more
openaire +5 more sources
The Auriga stellar haloes: connecting stellar population properties with accretion and merging history [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Accepted to MNRAS.
Antonela Monachesi +11 more
openaire +7 more sources
Modeling T Tauri Winds from He I 10830 Profiles [PDF]
, 2006 The high opacity of He I 10830 makes it an exceptionally sensitive probe of the inner wind geometry of accreting T Tauri stars. In this line blueshifted absorption below the continuum results from simple scattering of stellar photons, a situation which ...
Blandford R. D. +6 more
core +3 more sources
PROBING STELLAR ACCRETION WITH MID-INFRARED HYDROGEN LINES
The Astrophysical Journal, 2015 In this paper we investigate the origin of the mid-infrared (IR) hydrogen recombination lines for a sample of 114 disks in different evolutionary stages (full, transitional and debris disks) collected from the {\it Spitzer} archive. We focus on the two brighter {H~{\sc i}} lines observed in the {\it Spitzer} spectra, the {H~{\sc i}}(7-6) at 12.37$ $m ...
Meijerink, R. +29 more
openaire +6 more sources
MHD simulations of accretion onto a dipolar magnetosphere. II. Magnetospheric ejections and stellar spin-down [PDF]
, 2012 This paper examines the outflows associated with the interaction of a stellar magnetosphere with an accretion disk. In particular, we investigate the magnetospheric ejections (MEs) due to the expansion and reconnection of the field lines connecting the ...
Ferreira, Jonathan, Zanni, Claudio
core +2 more sources
ACCRETION ONTO THE FIRST STELLAR-MASS BLACK HOLES [PDF]
The Astrophysical Journal, 2009 4 pages, 4 figures, submitted to ApJ Letters, see http://slac.stanford.edu/~malvarez/FirstBH for high resolution figures and ...
Alvarez, Marcelo A. +2 more
openaire +3 more sources
Infrared study of the eta Chamaeleontis cluster and the longevity of circumstellar discs [PDF]
, 2002 We have analyzed JHKL observations of the stellar population of the ~9 Myr-old eta Chamaeleontis cluster. Using infrared (IR) colour-colour and colour-excess diagrams, we find the fraction of stellar systems with near-IR excess emission is 0.60 pm 0.13 ...
A.-Ran Lyo +45 more
core +2 more sources
Accretion in Young Stellar/Substellar Objects
The Astrophysical Journal, 2003 We present a study of accretion in a sample of 45 young, low mass objects in a variety of star forming regions and young associations, about half of which are likely substellar. Based primarily on the presence of broad, asymmetric Halpha emission, we have identified 13 objects (~30% of our sample) which are strong candidates for ongoing accretion.
Muzerolle, James +4 more
openaire +2 more sources
MOLECULAR CLOUD EVOLUTION. III. ACCRETION VERSUS STELLAR FEEDBACK [PDF]
The Astrophysical Journal, 2010 We numerically investigate the effect of feedback from the ionizing radiation heating from massive stars on the evolution of giant molecular clouds (GMCs) and their star formation efficiency (SFE). We find that the star-forming regions within the GMCs are invariably formed by gravitational contraction.
Enrique Vázquez-Semadeni +4 more
openaire +2 more sources