Results 51 to 60 of about 512,862 (249)

Binary Yellow Supergiants in the Magellanic Clouds. I. Photometric Candidate Identification

The Astrophysical Journal
Recent works have constrained the binary fraction of evolved populations of massive stars in local galaxies such as red supergiants and Wolf–Rayet stars, but the binary fraction of yellow supergiants (YSGs) in the Hertzsprung gap remains unconstrained ...
Anna J. G. O’Grady, Maria R. Drout, Kathryn F. Neugent, Bethany Ludwig, Ylva Götberg, B. M. Gaensler   +5 more
doaj   +1 more source

A CCD photometric study of the late type contact binary EK Comae Berenices

, 2010
We present CCD photometric observations of the W UMa type contact binary EK Comae Berenices using the 2 metre telescope of $IUCAA$ Girawali Observatory, India. The star was classified as a W UMa type binary of subtype-W by \citet{sam1996}. The new V band
Borovicka, Csizmadia, Flower, Girardi, Harinder P. Singh, Kinman, Kwee, Li, Lucy, Maceroni, Maceroni, Maceroni, Mochnacki, O’Connell, Prša, Ranjan Gupta, Rucinski, Rucinski, Rucinski, Ruciński, Samec, Sandquist, Schlegel, Schwarzenberg-Czerny, Stetson, Sukanta Deb, T.R. Seshadri, van Hamme, Wilson, Wilson, Wilson, Zhang   +31 more
core   +1 more source

A histidine‐rich extension of the mitochondrial F0 subunit ATP6 from the ice worm Mesenchytraeus solifugus increases ATP synthase activity in bacteria

FEBS Letters, EarlyView.
The glacier ice worm Mesenchytraeus solifugus survives year‐round at 0 °C. Its ATP6 subunit, which forms a regulatory component of the proton pore in mitochondrial ATP synthase, has a carboxy‐terminal extension not found in any other organism examined to date. Here, we show that fusion of this extension to the homologous AtpB protein in E. coli results
Truman Dunkley, Daniel H. Shain, Eric A. Klein   +2 more
wiley   +1 more source

Searching for GEMS: Characterizing Six Giant Planets Around Cool Dwarfs

The Astronomical Journal
Transiting giant exoplanets around M-dwarf stars (GEMS) are rare, owing to the low-mass host stars. However, the all-sky coverage of TESS has enabled the detection of an increasingly large number of them to enable statistical surveys like the Searching ...
Shubham Kanodia, Arvind F. Gupta, Caleb I. Cañas, Lia Marta Bernabò, Varghese Reji, Te Han, Madison Brady, Andreas Seifahrt, William D. Cochran, Nidia Morrell, Ritvik Basant, Jacob Bean, Chad F. Bender, Zoë L. de Beurs, Allyson Bieryla, Alexina Birkholz, Nina Brown, Franklin Chapman, David R. Ciardi, Catherine A. Clark, Ethan G. Cotter, Scott A. Diddams, Samuel Halverson, Suzanne Hawley, Leslie Hebb, Rae Holcomb, Steve B. Howell, Henry A. Kobulnicky, Adam F. Kowalski, Alexander Larsen, Jessica Libby-Roberts, Andrea S. J. Lin, Michael B. Lund, Rafael Luque, Andrew Monson, Joe P. Ninan, Brock A. Parker, Nishka Patel, Michael Rodruck, Gabrielle Ross, Arpita Roy, Christian Schwab, Guđmundur Stefánsson, Aubrie Thoms, Andrew Vanderburg   +44 more
doaj   +1 more source

The post-common-envelope, binary central star of the planetary nebula Hen 2-11

, 2014
We present a detailed photometric study of the central star system of the planetary nebula Hen 2-11, selected for study because of its low-ionisation filaments and bipolar morphology - traits which have been strongly linked with central star binarity ...
Boffin, Henri M. J., Corradi, Romano L. M., Jones, David, Miszalski, Brent, Tyndall, Amy A., Wesson, Roger   +5 more
core   +1 more source

A Giant Planet Undergoing Extreme-Ultraviolet Irradiation By Its Hot Massive-Star Host [PDF]

, 2017
The amount of ultraviolet irradiation and ablation experienced by a planet depends strongly on the temperature of its host star. Of the thousands of extrasolar planets now known, only six have been found that transit hot, A-type stars (with temperatures ...
Bayliss, D., Beatty, T. G., Bieryla, A., Bozza, V., Buchhave, L. A., Collins, K. A., Colón, K. D., Crepp, J. R., Curtis, I. A., DePoy, D. L., Dumont, M. T., D’Ago, G., Eastman, J. D., Ellis, T., Esquerdo, G. A., Fukui, A., Fulton, B. J., Gaillard, C., Gaudi, B. S., Gonzales, E. J., Gould, A., Gregorio, J., Howard, A. W., Ito, A., James, D. J., Jang-Condell, H., Jensen, Eric L.N., Johnson, M. C., Joner, M. D., Kasper, D. H., Kielkopf, J. F., Kuhn, R. B., Labadie-Bartz, J., Latham, D. W., Lund, M. B., Manner, M., Marshall, J. L., Matt, K., McLeod, K. K., Narita, N., Novati, S. C., Oberst, T. E., Penny, M., Pepper, J., Pogge, R. W., Reed, P. A., Relles, H., Rodriguez, J. E., Scarpetta, G., Siverd, R. J., Stassun, K. G., Stephens, D. C., Stevens, D. J., Stockdale, C., Tan, T. G., Trueblood, M., Trueblood, P., Yeigh, R. R., Zambelli, R., Zhou, G.   +59 more
core   +3 more sources

Characteristics of the Kelch domain containing (KLHDC) subfamily and relationships with diseases

FEBS Letters, EarlyView.
The Kelch protein superfamily includes 63 members, with the KLHDC subfamily having 10 proteins. While their functions are not fully understood, recent advances in KLHDC2's structure and role in protein degradation have highlighted its potential for drug development, especially in PROTAC therapies.
Courtney Pilcher, Paula Armina V. Buco, Jia Q. Truong, Paul A. Ramsland, Monique F. Smeets, Carl R. Walkley, Jessica K. Holien   +6 more
wiley   +1 more source

Double-edged Sword: The Influence of Tidal Interaction on Stellar Activity in Binaries

The Astrophysical Journal
Using the LAMOST DR7 low-resolution spectra, we carried out a systematic study of stellar chromospheric activity in both single and binary stars. We constructed a binary sample and a single-star sample, mainly using the binary belt and the main sequence ...
Yuedan Ding, Shidi Zhang, Henggeng Han, Wenyuan Cui, Song Wang, Min Fang, Yawei Gao   +6 more
doaj   +1 more source

A catalogue and statistical analysis for magnetic stars [PDF]

arXiv, 2023
Magnetic fields are significant in the structure and evolution of stars. We present a comprehensive catalogue of 1784 known magnetic stars, detailing their identifications, HD numbers, precise locations, spectral types, and averaged quadratic effective magnetic fields among other important information.
arxiv  

The frequency of T Tauri companion stars [PDF]

, 1993
We present the results of a magnitude limited (K≤8.5 mag) multiplicity survey of T Tauri stars in two nearby star forming regions, Tauris-Auriga and Ophiuchus-Scorpius.
Ghez, A. M., Matthews, K., Neugebauer, G.   +2 more
core