Results 21 to 30 of about 1,306,824 (294)

The GALAH survey: multiple stars and our Galaxy [PDF]

, 2020
Context. Binary stellar systems form a large fraction of the Galaxy’s stars. They are useful as laboratories for studying the physical processes taking place within stars, and must be correctly taken into account when observations of stars are used to ...
Kos, J.,, Ting, Y.-S., S. Sharma, Traven, G., D'Orazi, Valentina, K. Lind, Lewis, G.,, Merle, Thibault, Church, R.,, Traven, Gregor, Simpson, Jeffrey, Sharma, Sanjib, Merle, T.,, Sharma, S.,, Simpson, J.,, Munari, U., V. D’Orazi, Lewis, G., Lin, J., Stello, Dennis, K. Čotar, Zwitter, T.,, T. Merle, R. Church, Lind, Karin,, M. Asplund, Van der Swaelmen, M.,, K. Freeman, R. A. Wittenmyer, Bland-Hawthorn, J.,, Martell, S.,, Bland-Hawthorn, Joss, C. Sahlholdt, S. Buder, Asplund, M., A. Casey, Asplund, M.,, Zucker, Danièle, Martell, S., Sahlholdt, C.,, Van Der Swaelmen, M., Buder, S.,, Casey, A.,, Buder, S., Casey, Andrew, Wittenmyer, Robert R.A., Kos, Janez, D'Orazi, V., Munari, U.,, Cotar, K., D'Orazi, V,, Cotar, K.,, Van Der Swaelmen, Mathieu, Freeman, K.,, Sahlholdt, C., Zucker, D.,, D. Stello, Feltzing, S., Buder, Sven, De Silva, Gayandhi, Y.-S. Ting, U. Munari, Freeman, Kenneth, Cotar, Klemen, S. Martell, Wittenmyer, R. A., Feltzing, Sofia, Zwitter, T., Stello, D., Casey, A., Simpson, J., De Silva, G.,, Church, Ross R.P., T. Zwitter, Munari, Ulisse, S. Feltzing, Ting, Y-S,, Lind, Karin, J. Lin, J. Kos, Asplund, Martin, G. Traven, Sahlholdt, Christian Lundsgaard C., Lin, J.,, Ting, Yuansen Y.S., Feltzing, S.,, Kos, J., G. Lewis, Freeman, K., Sharma, S., Bland-Hawthorn, J., M. Van der Swaelmen, De Silva, G., Zucker, D., Ting, Y. S., Lind, K., Ting, Y. -S., VAN DER SWAELMEN, Mathieu Benoit Jean, Merle, T., Wittenmyer, R. A.,, Church, R., J. Bland-Hawthorn, Lin, Jane, Traven, G.,, G. De Silva, Zwitter, Tomaž, J. Simpson, Stello, D.,, Martell, Sarah, D. Zucker, Lewis, Geraint   +110 more
core   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

FEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell, Thomas Walther, Egbert Hoiczyk   +2 more
wiley   +1 more source

Search for a Black Hole Binary in Gaia DR3 Astrometric Binary Stars with Spectroscopic Data

The Astrophysical Journal, 2023
We report the discovery of a candidate binary system consisting of a black hole (BH) and a red giant branch star in Gaia DR3. This binary system was discovered from 64,108 binary solutions for which both astrometric and spectroscopic data are available ...
Ataru Tanikawa, Kohei Hattori, Norita Kawanaka, Tomoya Kinugawa, Minori Shikauchi, Daichi Tsuna   +5 more
doaj   +1 more source

Binary Star Orbits. VI. The Interferometric-spectroscopic Binary 73 Leo

The Astronomical Journal
Discordances in radial-velocity measurements of 73 Leonis, made more than a century ago, gave rise to the first suggestion that this fifth-magnitude star was a binary system, but it was 40 yr before an accurate investigation of the object commenced, and ...
Brian D. Mason, R. Elizabeth M. Griffin, R. T. Zavala, Christian A. Hummel, Haley M. Hurowitz, Jonathan L. Hurowitz, William I. Hartkopf, Ellyn K. Baines, Stephen J. Williams, Rachel A. Matson   +9 more
doaj   +1 more source

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

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

Spectroscopic Orbits of Subsystems in Multiple Stars. XI

The Astronomical Journal
Adding to the large radial velocity survey of nearby solar-type stars (summary in Tokovinin, 2023a), spectroscopic orbits are determined for four hierarchical systems: HIP 49442 (inner and outer periods of 164.55 days and 34 yr, respectively), HIP 55691 (
Andrei Tokovinin
doaj   +1 more source

The New Version of the Binary Star Database (BDB)

Open Astronomy, 2012
The Binary star database contains data on about 100 000 stellar systems of multiplicity 2 to 22, taken from a large variety of published catalogues for all types of binary stars: visual, orbital, astrometric, interferometric, spectroscopic, photometric ...
Kaygorodov P., Debray B., Kolesnikov N., Kovaleva D., Malkov O.   +4 more
doaj   +1 more source

PASTA‐ELN: Simplifying Research Data Management for Experimental Materials Science

Advanced Engineering Materials, EarlyView.
Research data management faces ongoing hurdles as many ELNs remain complex and restrictive. PASTA‐ELN offers an open‐source, cross‐platform solution that prioritizes simplicity, offline access, and user control. Its in tuitive folder structure, modular Python add‐ons, and open formats enable seamless documentation, FAIR data practices, and easy ...
S. Brinckmann, G. Winkens, R. Schwaiger
wiley   +1 more source

Orbits of Twelve Multiple Stars

The Astronomical Journal
Inner and outer orbits in 12 hierarchical stellar systems are determined using high-resolution speckle imaging, radial velocities, or both. Masses and fluxes of the components are estimated. The Hipparcos numbers of the main stars are 7111, 12912, 17895,
Andrei Tokovinin
doaj   +1 more source