Results 11 to 20 of about 7,826,767 (229)

An Optimized Freeze-Dry Multimodal Workflow for Sequential Micro-CT Imaging, Histology, and Molecular Profiling: A Use Case in Human Liver Fibrosis. [PDF]

open access: yesAdv Sci (Weinh)
Optimized freeze‐drying and eosin staining deliver artifact‐free micro‐CT images of liver tissue at near‐histological detail, then hand the same specimen back for sectioning, staining, and sequencing. Fibrotic volume distinguishes normal liver from cirrhosis, while preserved RNA reveals inflammatory gene upregulation—one biopsy, three dimensions, and a
Skok K   +13 more
europepmc   +2 more sources

Variable stars towards the bulge of M31: the AGAPE catalogue [PDF]

open access: yes, 2004
We present the AGAPE astrometric and photometric catalogue of 1579 variable stars in a 14'x10' field centred on M31. This work is the first survey devoted to variable stars in the bulge of M31.
R. Ansari   +36 more
core   +1 more source

Hubble space telescope STIS spectroscopy of the peculiar nova-like variables BK Lyn, V751 Cygni, and V380 Oph [PDF]

open access: yes, 2009
We obtained Hubble STIS spectra of three nova-like variables: V751 Cygni, V380 Oph, and—the only confirmed nova-like variable known to be below the period gap—BK Lyn.
Gänsicke, B. T. (Boris T.)   +6 more
core   +1 more source

New periodic variable stars coincident with ROSAT sources discovered using SuperWASP [PDF]

open access: yes, 2007
We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously recognised as periodic variables.
West, Richard G.   +76 more
core   +1 more source

Revised coordinates of variable stars in Cassiopeia [PDF]

open access: yes, 2018
The identification of the variable stars published on IBVS 3573 has ben revised on the basis of the original (unpublished) finding charts. Cross check with the 2MASS catalog has been made to get more accurate coordinates and to confirm their nature from ...
R. Nesci, NESCI, R.
core   +1 more source

Variable Stars [PDF]

open access: yes, 2021
تتطرق هذه المقالة إلى أجرام سماوية شهيرة جداً في علم فيزياء الفلك تدعى بالنجوم المتغيرة (variable stars). تتضمن مجموعة النجوم المتغيرة فيزيائيا نوعين رئيسيين وهما نجوم متغيرة بانتظام ونجوم غير متغيرة بانتظام.
معلا, محمد
core   +1 more source

RR Lyrae stars in the GCVS observed by the Qatar Exoplanet Survey [PDF]

open access: yes, 2015
This publication was made possible by NPRP grant # X-019-1-006 from the Qatar National Research Fund (a member of Qatar Foundation). AAF is grateful to DGAPA-UNAM for grant number IN104612.We used the light curve archive of the Qatar Exoplanet Survey to ...
Bramich, Daniel Martyn   +7 more
core   +2 more sources

Spectroscopy and Orbital Periods of Four Cataclysmic Variable Stars [PDF]

open access: yes, 2001
We present spectroscopy and orbital periods Porb of four relatively little-studied cataclysmic variable stars. The stars and their periods are: AF Cam, Porb = 0.324(1) d (the daily cycle count is slightly ambiguous); V2069 Cyg (= RX J2123.7+4217), 0 ...
Taylor, Cynthia J, Thorstensen, John R
core   +1 more source

USING CONSUMER-GRADE DSLR CAMERA AND SMALL TELESCOPE TO FIND NEW VARIABLE STARS

open access: yesOdessa Astronomical Publications, 2019
Twenty-seven new variable stars were found in DSLR images captured from October 2017 to June 2019. All images were taken using unmod- i?ed Canon EOS 600D DSLR attached to a Sky- watcher 150/750 Newtonian on a motorized equato- rial mount.
M. Yu. Pyatnytskyy
doaj   +1 more source

"INTER-LONGITUDE ASTRONOMY" (ILA) PROJECT: CURRENT HIGHLIGHTS AND PERSPECTIVES. I. MAGNETIC VS. NON-MAGNETIC INTERACTING BINARY STARS

open access: yesOdessa Astronomical Publications, 2010
We present a review of highlights of our photometric and photo-polarimetric monitoring and mathematical modeling of interacting binary stars of different types classical, asynchronous, intermedi ate polars with 25 timescales corresponding to differ ent ...
I. L. Andronov   +25 more
doaj   +1 more source

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