Results 51 to 60 of about 2,766,286 (295)

Detection of Four Intermediate-mass Stars with Cool Companions in Low Mass Ratio Eclipsing Binaries

The Astrophysical Journal
According to the core fragmentation and dynamical capture theories of binary formation, binaries tend to form with nearly equal masses. The detection of intermediate-mass binaries with low mass ratios challenges these theories, as such binaries may form ...
Linfeng Chang, Shengbang Qian, Lei Zang, Fuxing Li   +3 more
doaj   +1 more source

Attitudes of cancer patients toward ctDNA‐based liquid biopsy for follow‐up

Molecular Oncology, EarlyView.
This mixed‐methods study explored cancer patients' experiences, knowledge, and preferences regarding ctDNA‐based liquid biopsy for follow‐up. Awareness of ctDNA was low and recall of previous liquid biopsy was imperfect, yet acceptance was high.
Siddharth Chhajlani, Laura Mariën, Caro De Weerdt, Sanne Wouters, Laure‐Anne Teuwen, Hans Prenen, Katleen Janssens, Timon Vandamme   +7 more
wiley   +1 more source

Orbital Elements of visual binary stars with very short arcs: With application to double stars from the 1829 southern double star catalog of James Dunlop [PDF]

, 2022
Binary double stars are those whose binding energies are less than zero. Obtaining binary star orbits from short arcs has been a long-standing problem in astrophysics.
Roderick R. Letchford, Carolyn J. Brown, Brown, Carolyn J., White, Graeme L., Graeme L. White, Letchford, Roderick R.   +5 more
core   +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

The evolution of close helium star to neutron star binaries [PDF]

Symposium - International Astronomical Union, 2003
We present the evolution of helium stars in binary systems with a 1.4 M⊙ neutron-star companion which will produce double neutron-star binaries, i.e., systems with helium stars more massive than 2.5 M⊙. We found that mass transfer from helium star less massive than ~ 3.3 M⊙ will end up in a common-envelope phase.
Dewi, J.D.M., Pols, O.R.
openaire   +3 more sources

The impact of leukocyte‐associated RNA retention on platelet RNA‐based cancer detection

Molecular Oncology, EarlyView.
Platelets carry RNA signals that may help detect cancer, but platelet samples can also retain RNA from white blood cells. We found that this retained white blood cell signal did not significantly affect machine learning cancer classification, suggesting that the cancer‐related RNA signal in platelets is largely independent of leukocyte‐associated RNA ...
Michał Sieczczyński, Krzysztof Pastuszak, Anna Samelak‐Czajka, Zuzanna Cemka, Paulina Jackowiak, Tomasz Stefaniak, Sylwia Łapińska‐Szumczyk, Jacek Jassem, Anna J. Żaczek, Matthew T. Rondina, Myron G. Best, Sjors G. J. G. In 't Veld, Anna Supernat   +12 more
wiley   +1 more source

Merger Conditions of Population III Protostar Binaries

The Astrophysical Journal, 2023
Massive close binary stars with extremely small separations have been observed, and they are possible progenitors of gravitational-wave sources. The evolution of massive binaries in the protostellar accretion stage is key to understanding their formation
Takanobu Kirihara, Hajime Susa, Takashi Hosokawa, Tomoya Kinugawa   +3 more
doaj   +1 more source

‘Swinging Dipoles’ in Magnetic Close Binary Stars [PDF]

International Astronomical Union Colloquium, 1987
AbstractThe recently discovered phenomena in polars - Magnetic Close Binary Stars (MCBS), are discussed. Asynchronous MCBS are on the ‘propeller stage’ (which is analogous to the investigated one for neutron stars), and are synchronizing during ts ≲ 103 yr, being during this stage rapidly evolving, mass ejecting systems.
openaire   +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

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

, 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., Pollacco, Don, M. Gallaway, Street, R. A., Horne, K. (Keith), Kane, S. R., Christian, Damian Joseph, D. J. Christian (7603835), Hellier, Coel, Enoch, B., Nicholas, J. P., D. Pollacco (7603205), Irwin, J., Skillen, I., B. Enoch (7603838), West, R. G., R. A. Street, D. J. Christian, T. A. Lister (7603856), Irwin, Jonathan, K. Horne, Ryans, R., C. A. Haswell, D. M. Wilson (2428792), Wilson, D. M., Christian, D. J., J. P. Nicholas (7614728), S. R. Kane (7603853), S. R. Kane, Haswell, C. A., J. P. Nicholas, B. Enoch, C. Hellier (7603562), Norton, A. J., W. I. Clarkson, R. G. West, Lister, T. A., W. I. Clarkson (7612619), West, R .G., J. Irwin, Gallaway, M., T. A. Lister, Collier Cameron A (7614731), Pollacco, D., Parley, N., K. Horne (7603850), R. Ryans, C. A. Haswell (7603844), P. J. Wheatley (7590065), Hellier, C., Norton, Andrew J., R. Ryans (7612838), N. Parley, D. M. Wilson, Parley, N. R., I. Skillen (7601975), A. J. Norton (7603859), Horne, Keith Douglas, Horne, K. D., I. Skillen, R. G. West (7602272), A. Collier Cameron, J. Irwin (7606340), P. J. Wheatley, C. Hellier, R. A. Street (7603868), M. Gallaway (7614725), N. Parley (7603862), Cameron, Andrew Collier, Collier Cameron, A., Clarkson, W. I., Kane, Sharad R., Wheatley, P. J., A. J. Norton, Wilson, D. M. (David M.), D. Pollacco, Cameron, Andrew Collier; id_orcid   +76 more
core   +1 more source