Results 51 to 60 of about 10,044,096 (256)

ERRATUM: "QATAR-2 : A K dwarf orbited by a transiting hot Jupiter and a more massive companion in an outer orbit" (2012, ApJ, 750, 84) [PDF]

open access: yes, 2012
We report the discovery and initial characterization of Qatar-2b, a hot Jupiter transiting a V = 13.3 mag K dwarf in a circular orbit with a short period, P b = 1.34 days.
Collier Cameron, Andrew   +68 more
core   +1 more source

MethyAnno: An Interpretable Automated Annotation Method Leveraging Multi‐Scale Information and Metric Learning Framework for scDNAm Data

open access: yesAdvanced Science, EarlyView.
MethyAnno enables robust and interpretable annotation of single‐cell DNA methylation data by integrating multi‐scale epigenetic information, bidirectional cross‐attention, and prototype‐based metric learning. The framework resolves rare and novel cell types across datasets while revealing cell‐type‐specific epigenetic signatures associated with disease
Yuhang Jia   +4 more
wiley   +1 more source

MXene‐Based Room‐Temperature NO2 Gas Sensors: A Meta‐Analysis

open access: yesAdvanced Science, EarlyView.
This study presents the first comprehensive meta‐analysis of MXene‐based NO2 sensors, decoding 32 study characteristics across 61 peer‐reviewed studies. By isolating materials chemistry as the primary performance driver over device‐level parameters, the authors establish a methodological blueprint and a predictive structure–function map to accelerate ...
Alexander Khort   +3 more
wiley   +1 more source

Chromospherically Active Stars. XXII. HD 18955, A Massive K Dwarf Binary [PDF]

open access: yes, 2004
HD 18955 is a double-lined spectroscopic binary with a period of 43.3214 days and a high eccentricity of 0.761. The spectral types of the components are K0 V and K2-K3 V. The secondary is a typical early K dwarf, although its minimum mass is greater than
Henry, Gregory W.   +2 more
core   +1 more source

Chromospheric and Transition Region Emission Properties of G, K, and M dwarf Exoplanet Host Stars [PDF]

open access: yes, 2018
Exoplanet magnetic fields have proven notoriously hard to detect, despite theoretical predictions of substantial magnetic field strengths on close-in extrasolar giant planets.
France, Kevin   +7 more
core  

CONVECTION ZONE OF WHITE-DWARF STARS

open access: yes, 1992
The boundary convection zones of hot helium white-dwarf stars (WDSs) in the range 17000 K less-than-or-equal-to T(e) less-than-or-equal-to 30000 K are studied.
ATWEH, ZM, ERYURTEZER, D
core   +1 more source

TGFBI Maintains Fibrocartilage Homeostasis by Restraining O‐GlcNAcylation to Inactivate and Destabilize ADAMTS16 in Temporomandibular Joint Osteoarthritis

open access: yesAdvanced Science, EarlyView.
TGFBI deficiency elevates O‐GlcNAcylation, promoting the transcriptional activation of ADAMTS16 and OGT‐mediated post‐translational modification of ADAMTS16 at Ser1170. This leads to its stabilization and accumulation, driving chondrocyte metabolic disorders and senescent phenotypes, ultimately resulting in fibrocartilage dysfunction and TMJOA ...
Xin Liu   +12 more
wiley   +1 more source

A radio-continuum and photoionization-model study of the two planetary nebulae in the Sagittarius dwarf galaxy [PDF]

open access: yes, 2000
Radio continuum observations at 1.4, 4.8 and 8.6 GHz of the two Planetary Nebulae (PNe) in the Sagittarius dwarf galaxy reveal the elongated shape ofWray 16-423 and the extreme compactness of He 2-436.
Dudziak, G.   +3 more
core   +3 more sources

Searching for GEMS: Discovery and Characterization of Two Brown Dwarfs Around M Dwarfs

open access: yesThe Astronomical Journal
Brown dwarfs bridge the gap between stars and planets, providing valuable insight into both planetary and stellar-formation mechanisms. Yet the census of transiting brown-dwarf companions, in particular around M-dwarf stars, remains incomplete. We report
Alexander Larsen   +19 more
doaj   +1 more source

The DB gap and a new class of pulsating white dwarfs

open access: yesEPJ Web of Conferences, 2013
The recent systematic surveys providing enormously massive datasets of white dwarfs show that there is still a deficit of a factor of 2.5 in the DA/non-DA ratio within the temperature range of 30 000 K < Teff < 45 000 K, which has been regarded as the ...
Shibahashi H.
doaj   +1 more source

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