Results 101 to 110 of about 581,212 (353)

Addressing persistent challenges in digital image analysis of cancer tissue: resources developed from a hackathon

open access: yesMolecular Oncology, EarlyView.
Large multidimensional digital images of cancer tissue are becoming prolific, but many challenges exist to automatically extract relevant information from them using computational tools. We describe publicly available resources that have been developed jointly by expert and non‐expert computational biologists working together during a virtual hackathon
Sandhya Prabhakaran   +16 more
wiley   +1 more source

Binary Frequencies in a Sample of Globular Clusters. I. Methodology and Initial Results [PDF]

open access: yesApJ, 768, 158, 2013, 2013
Binary stars are thought to be a controlling factor in globular cluster evolution, since they can heat the environmental stars by converting their binding energy to kinetic energy during dynamical interactions. Through such interaction, the binaries determine the time until core collapse.
arxiv   +1 more source

A Study of Nine Extremely Low Mass Ratio-contact Binary Systems

open access: yesThe Astronomical Journal
Low-mass ratio systems (LMR) are a very interesting class of contact eclipsing binaries challenging the theoretical models of stability. These systems are also considered possible progenitors of the rare low-mass optical transients called red novae.
Eleni Lalounta   +4 more
doaj   +1 more source

ALMA observations of the supergiant B[e] star Wd1-9 [PDF]

open access: yes, 2016
Mass-loss in massive stars plays a critical role in their evolution, although the precise mechanism(s) responsible – radiatively driven winds, impulsive ejection and/or binary interaction – remain uncertain.
Blomme, R.   +5 more
core   +3 more sources

Classification of acute myeloid leukemia based on multi‐omics and prognosis prediction value

open access: yesMolecular Oncology, EarlyView.
The Unsupervised AML Multi‐Omics Classification System (UAMOCS) integrates genomic, methylation, and transcriptomic data to categorize AML patients into three subtypes (UAMOCS1‐3). This classification reveals clinical relevance, highlighting immune and chromosomal characteristics, prognosis, and therapeutic vulnerabilities.
Yang Song   +13 more
wiley   +1 more source

Stellar Binaries That Survive Supernovae [PDF]

open access: yes, 2018
The number of binaries containing black holes or neutron stars depends critically on the fraction of binaries that survive supernova explosions. We searched for surviving star plus remnant binaries in a sample of 49 supernova remnants (SNR) containing 23 previously identified compact remnants and three high mass X-ray binaries (HMXB), finding no new ...
arxiv   +1 more source

The First Photometric Analysis of Two Low-mass-ratio Contact Binary Systems in TESS Survey

open access: yesThe Astronomical Journal
Low-mass-ratio ( q ) contact binary systems are progenitors of stellar mergers such as blue stragglers or fast-rotating FK Com stars. In this study, we present the first light curve analysis of two newly identified low mass-ratio contact binary systems ...
Qiyuan Cheng   +10 more
doaj   +1 more source

Discovery of a planetary nebula surrounding the symbiotic star DT Serpentis

open access: yes, 2013
We report the discovery of a planetary nebula centered on the poorly studied symbiotic binary star DT Ser. In a few other symbiotic stars spatially resolved nebulae have been discovered: however, only one of them might be a genuine planetary nebula ...
Baldinelli, L.   +4 more
core   +1 more source

Photoionization models of the Eskimo nebula: evidence for a binary central star? [PDF]

open access: yes, 2011
The ionizing star of the planetary nebula NGC 2392 is too cool to explain the high excitation of the nebular shell, and an additional ionizing source is necessary. We use photoionization modeling to estimate the temperature and luminosity of the putative
Danehkar, Ashkbiz   +3 more
core   +1 more source

The implications of close binary stars for star-disk interactions [PDF]

open access: yesProceedings of the International Astronomical Union, 2007
AbstractThe presence of close (≲ 0.1 AU) stellar companions must greatly alter the circumstellar environment of classical T Tauri stars, including severe truncation if not elimination of circumstellar disks. It is thus remarkable how little impact the presence of a close companion has on our observable diagnostics for accretion and outflow.
openaire   +2 more sources

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