Results 21 to 30 of about 906,285 (242)

The aftermath of the first stars: massive black holes [PDF]

open access: yes, 2006
We investigate the evolution of the primordial gas surrounding the first massive black holes formed by the collapse of Population III stars at redshifts z≥ 20. Carrying out three-dimensional hydrodynamical simulations using GADGET, we study the dynamical,
Jarrett L. Johnson, V. Bromm
semanticscholar   +1 more source

The MiMeS survey of Magnetism in Massive Stars : magnetic analysis of the O-type stars [PDF]

open access: yes, 2016
We present the analysis performed on spectropolarimetric data of 97 O-type targets included in the framework of the Magnetism in Massive Stars (MiMeS) Survey. Mean least-squares deconvolved Stokes I and V line profiles were extracted for each observation,
J. Grunhut   +13 more
semanticscholar   +1 more source

Neutron stars structure in the context of massive gravity [PDF]

open access: yes, 2017
Motivated by the recent interests in spin−2 massive gravitons, we study the structure of neutron star in the context of massive gravity. The modifications of TOV equation in the presence of massive gravity are explored in 4 and higher dimensions.
Seyed Hossein Hendi   +3 more
semanticscholar   +1 more source

An unstable truth: how massive stars get their mass [PDF]

open access: yes, 2016
The pressure exerted by massive stars' radiation fields is an important mechanism regulating their formation. Detailed simulation of massive star formation therefore requires an accurate treatment of radiation.
A. Rosen   +3 more
semanticscholar   +1 more source

Rejuvenation of stellar mergers and the origin of magnetic fields in massive stars [PDF]

open access: yes, 2016
Approximately 10% of massive OBA main-sequence (MS) and pre-MS stars harbour strong, large-scale magnetic fields. At the same time there is a dearth of magnetic stars in close binaries.
F. Schneider   +4 more
semanticscholar   +1 more source

Common envelope ejection in massive binary stars - Implications for the progenitors of GW150914 and GW151226 [PDF]

open access: yes, 2016
The recently detected gravitational wave signals (GW150914 and GW151226) of the merger event of a pair of relatively massive stellar-mass black holes (BHs) calls for an investigation of the formation of such progenitor systems in general.
M. Kruckow   +7 more
semanticscholar   +1 more source

A SPECTROSCOPIC SURVEY OF MASSIVE STARS IN M31 AND M33 [PDF]

open access: yes, 2016
We describe our spectroscopic follow-up to the Local Group Galaxy Survey (LGGS) photometry of M31 and M33. We have obtained new spectroscopy of 1895 stars, allowing us to classify 1496 of them for the first time.
P. Massey, K. Neugent, B. Smart
semanticscholar   +1 more source

Slowly rotating neutron stars in scalar-tensor theories with a massive scalar field [PDF]

open access: yes, 2016
In the scalar-tensor theories with a massive scalar field the coupling constants, and the coupling functions in general, which are observationally allowed, can differ significantly from those in the massless case.
S. Yazadjiev, D. Doneva, Dimitar Popchev
semanticscholar   +1 more source

Novel and unscrutinized immune entities of the zebrafish gut

open access: yesFEBS Letters, EarlyView.
Understudied cells of the zebrafish immune system include bona fide immune cells and epithelial (‐derived) cells with immune functions. Research focusing on zebrafish cells which demonstrate similarities to mammalian immune cell counterparts may help us understand the pathologies in which they are implicated. Currently available and advanced tools make
Audrey Inge Schytz Andersen‐Civil   +5 more
wiley   +1 more source

The zinc finger domains of PARP‐1 are selectively and potently inhibited by the Au(I)‐based drugs sodium aurothiomalate and aurothioglucose

open access: yesFEBS Letters, EarlyView.
PARP‐1 is a key enzyme in the DNA damage response, and its inhibition induces cancer cell death via synthetic lethality. Au(I)‐based drugs, such as aurothioglucose and sodium aurothiomalate, block PARP‐1's DNA‐dependent activity by targeting its zinc finger domains.
Uliana Bashtanova, Melinda Jane Duer
wiley   +1 more source

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