Results 41 to 50 of about 83,821 (294)

Orbital elements of five close visual binary stars [PDF]

Astronomische Nachrichten, 2000
Revised orbital elements of the visual binary stars STT 2, STT 4, BU 1015, STT 6 and BU 395 are given. Dynamical parallaxes and total masses of the systems have been calculated.
Scardia, Marco, Prieur, Jean-Louis, Aristidi, Eric, Koechlin, Laurent   +3 more
openaire   +2 more sources

Somatic mutational landscape in von Hippel–Lindau familial hemangioblastoma

Molecular Oncology, EarlyView.
The causes of central nervous system (CNS) hemangioblastoma in Von Hippel–Lindau (vHL) disease are unclear. We used Whole Exome Sequencing (WES) on familial hemangioblastoma to investigate events that underlie tumor development. Our findings suggest that VHL loss creates a permissive environment for tumor formation, while additional alterations ...
Maja Dembic, Anne Nørremølle, Lilian Bomme Ousager, Lars van Brakel Andersen, Marie Louise Mølgaard Binderup, Mads Thomassen   +5 more
wiley   +1 more source

Five New Sirius-like White Dwarf–Main-sequence Star Systems with MagAO-X

The Astronomical Journal
Most known white dwarfs in multiple systems with main-sequence stars have been discovered with M-type companions, because the white dwarf causes detectable UV excess and bluer colors than expected from a single M star.
Logan A. Pearce, Jared R. Males, Sebastiaan Y. Haffert, Laird M. Close, Joseph D. Long, Eden A. McEwen, Joshua Liberman, Maggie Y. Kautz, Jay K. Kueny, Alycia J. Weinberger, Jialin Li, Elena Tonucci, Katie Twitchell, Avalon L. McLeod, Warren B. Foster, Olivier Guyon, Alexander D. Hedglen, Kyle Van Gorkom, Jennifer Lumbres, Lauren Schatz, Victor Gasho, Katie M. Morzinski, Phil M. Hinz   +22 more
doaj   +1 more source

Deciphering transcriptional plasticity in pancreatic ductal adenocarcinoma reveals alterations in sensory neuron innervation

Molecular Oncology, EarlyView.
Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova, Michele Montrone, Uday Rangaswamy, Francesco Diversi, Irene Schiavo, Denise Ferrarini, Roberta Di Florio, Irene Longo, Michele Coscia, Nicola Zamboni, Giorgia Demontis, Lisa Veghini, Vincenzo Corbo, Remo Sanges, Paul Heppenstall   +14 more
wiley   +1 more source

The Primordial Binary Population - I: A near-infrared adaptive optics search for close visual companions to A star members of Scorpius OB2 [PDF]

, 2004
We present the results of a near-infrared adaptive optics survey with the aim to detect close companions to Hipparcos members in the three subgroups of the nearby OB association Sco OB2: Upper Scorpius (US), Upper Centaurus Lupus (UCL) and Lower ...
A. G. A. Brown, Alencar, Balega, Baraffe, Barbier-Brossat, Bate, Bertelli, Beuzit, Blaauw, Brown, Carpenter, Carter, Chabrier, de Bruijne, de Geus, de Zeeuw, de Zeeuw, Devillard, Diolaiti, Duflot, Duquennoy, Girardi, H. Zinnecker, Hartkopf, Hogeveen, Hoogerwerf, Hut, Huélamo, Jordi, Kenyon, Klessen, Kraicheva, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Köhler, L. Kaper, Lada, Leinert, Levato, Lindroos, M. B. N. Kouwenhoven, Malkov, Mamajek, Mason, Mathieu, Mathis, McAlister, Miura, Palla, Palla, Portegies Zwart, Preibisch, Preibisch, Preibisch, Quist, Reipurth, Reipurth, S. F. Portegies Zwart, Sartori, Savage, Shatsky, Sills, Sowell, Svechnikov, Tokovinin, Tout, van der Bliek, Wolfire, Worley   +73 more
core   +4 more sources

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Performance of the SOAR Speckle Instrument

The Astronomical Journal
The High Resolution Camera (HRCam) speckle imager at the 4.1 m Southern Astrophysical Research telescope is a highly productive instrument that has accumulated about 40K observations to date.
Andrei Tokovinin
doaj   +1 more source

RoundMi: A quantitative method to analyze mitochondrial morphology in mitotic cells

FEBS Open Bio, EarlyView.
RoundMi is a workflow for rapid analysis of mitochondrial morphology in mitotic cells. By combining adaptive preprocessing with automated segmentation and quantification, it enables accurate measurements from single focal plane images, reducing acquisition time and computational demands while remaining compatible with high‐throughput fixed and live ...
Elmira Parvindokht Bararpour, Christine Volmert, Valentina Piano   +2 more
wiley   +1 more source

Detecting New Visual Binaries in Gaia DR3 with Gaia and Two Micron All Sky Survey (2MASS) Photometry. II. Speckle Observations of 16 Low-separation Systems

The Astronomical Journal
Here we present speckle observations of 16 low-separation ( s < 30 au) high-probability candidate binaries from the catalog by Medan et al., where secondaries typically lack astrometric solutions in Gaia. From these speckle observations, we find a second
Ilija Medan, Sébastien Lépine, Zachary Hartman, Keivan G. Stassun   +3 more
doaj   +1 more source

Radial and rotational velocities of young brown dwarfs and very low-mass stars in the Upper Scorpius OB association and the rho Ophiuchi cloud core [PDF]

, 2006
We present the results of a radial velocity (RV) survey of 14 brown dwarfs (BDs) and very low-mass (VLM) stars in the Upper Scorpius OB association (UScoOB) and 3 BD candidates in the rho Ophiuchi dark cloud core.
Harries, Tim J., Kurosawa, Ryuichi, Littlefair, S. P.   +2 more
core   +3 more sources