Results 141 to 150 of about 12,886 (274)

Stellar Spin-down in Post-mass-transfer Binary Systems

The Astrophysical Journal
Motivated by measurements of the rotation speed of accretor stars in post-mass-transfer (post-MT) systems, we investigate how magnetic braking affects the spin-down of individual stars during binary evolution with the MESAbinary module.
Meng Sun, Seth Gossage, Emily M. Leiner, Aaron M. Geller   +3 more
doaj   +1 more source

Continuous purification of a parvovirus using two aqueous two‐phase extraction steps

Biotechnology Progress, EarlyView.
Abstract Aqueous two‐phase systems (ATPS) are a liquid–liquid extraction method that offers low‐cost, continuous‐adaptable virus purification. A two‐step ATPS using polyethylene glycol (PEG) and sodium citrate that recovered 66% of infectious porcine parvovirus with 2.0 logs of protein removal and 1.0 logs of DNA removal in batch has now been run ...
Natalie M. Nold, Sheridan Waldack, Grace James, Trisha Colling, Lynn Manchester, Taravat Sarvari, Amanda Bekkala, Seth A. Kriz, Madison Baldwin, Emily Agustin‐Mazariegos, Michael J. Betenbaugh, Caryn L. Heldt   +11 more
wiley   +1 more source

The Impact of Stellar Rotations and Binaries on the Shape of Upper Main Sequence near Turnoff in Open Cluster NGC 6067

The Astrophysical Journal
We present the analysis of the extended main-sequence turnoff (eMSTO) in the open cluster NGC 6067. We derive the projected rotational velocity, v sin i , of the stars belonging to the eMSTO region of the main sequence (MS) utilizing Gaia-ESO spectra ...
Jayanand Maurya, Yu Zhang, Sebastian Kamann, Hubiao Niu, Yves Frémat, Kaixiang Lang, Y. C. Joshi, M. R. Samal, Peter De Cat, Ali Esamdin   +9 more
doaj   +1 more source

Analysis of Two Binary Stars and a Blue Straggler in Messier 67

, 2021
We report on the detailed analysis of three candidate blue straggler stars, S277, S997, and S1031, in the old open cluster M67 (NGC 2682), based on observations made with the high resolution Immersion GRating INfrared Spectrograph (IGRINS) at the McDonald Observatory 2.7m telescope at a resolving power of R~45,000.
Christopher Sneden, Greg Mace, Natalie M. Gosnell, Kristin Brady, C. A. Pilachowski, Richard Seifert, Daniel T. Jaffe   +6 more
openaire   +2 more sources

Predicting the Uniform Electron Gas Stopping Power at Moderate and Strong Coupling

Contributions to Plasma Physics, EarlyView.
ABSTRACT This paper presents a detailed study of the stopping power of a homogeneous electron gas in moderate and strong coupling regimes using the self‐consistent version of the method of moments as the key theoretical approach capable of expressing the dynamic characteristics of the system in terms of the static ones, which are the moments.
Saule A. Syzganbayeva, Alexey V. Filinov, Jesús Ara, Assel B. Ashikbayeva, Abdiadil Askaruly, Lazzat T. Yerimbetova, Manuel D. Barriga‐Carrasco, Yuriy V. Arkhipov, Igor M. Tkachenko   +8 more
wiley   +1 more source

Discovery of a Barium Blue Straggler Star in M67 and “Sighting” of Its White Dwarf Companion

The Astrophysical Journal Letters
We report the discovery of a barium blue straggler star (BSS) in M67, exhibiting enhancements in slow neutron-capture ( s -)process elements. Spectroscopic analysis of two BSSs (WOCS 9005 & WOCS 1020) and four stars located near the main-sequence turn ...
Harshit Pal, Annapurni Subramaniam, Arumalla B. S. Reddy, Vikrant V. Jadhav   +3 more
doaj   +1 more source

Most mammals do not wander: few species escape continental endemism

Ecography, EarlyView.
Terrestrial mammals are found nearly everywhere on Earth. Yet, most taxa are endemic to a single continent; geological, evolutionary, ecological, or physiological filters constrain geographic distributions. Here, we synthesize data on geography, taxonomy, lineage age, dispersal, body size, and diet for > 4000 terrestrial mammals prior to detectable ...
Meghan A. Balk, Melissa I. Pardi, Catalina P. Tomé, Rasmus Ø. Pedersen, John M. Grady, S. Kathleen Lyons, Larisa E. Harding, Marie L. Westover, Katlin Schroeder, James H. Brown, Felisa A. Smith   +10 more
wiley   +1 more source

A Well‐Advanced High‐Throughput Test System for Electrocatalytic Screening Applications Under Industrial Relevant Conditions – A Perspective to Accelerate Electrolysis Research and Development

Electrochemical Science Advances, EarlyView.
ABSTRACT Electrolysis is a dynamic research area in which both mature and new promising processes, such as alkaline water electrolysis and electrochemical CO2 reduction, are under enormous development pressure due to their high relevance for the energy sector.
Deniz Dogan, Burkhard Hecker, Xuehuai Hou, Inka Dessel, Andreas Müller, Guido Wasserschaff, Simone S. Köcher, Violeta Karyofylli, Hans Kungl, Hermann Tempel, Rüdiger‐A. Eichel   +10 more
wiley   +1 more source

Star Formation History and Chemical Evolution of the Sextans Dwarf Spheroidal Galaxy

, 2009
We present the star formation history and chemical evolution of the Sextans dSph dwarf galaxy as a function of galactocentric distance. We derive these from the $VI$ photometry of stars in the $42' \times 28'$ field using the SMART model developed by Yuk
Carrea, Da Costa, Demarque, Dennis Zaritsky, Dolphin, Fenner, Geisler, Harbeck, Hong Soo Park, In-Soo Yuk, Irwin, Irwin, Jason Harris, Kawata, Komatsu, Lee, Matteucci, Matteucci, Myung Gyoon Lee, Ricotti, Rizzi, Shetrone, Shetrone, Sills, Tolstoy, Tolstoy, Yi, Yuk   +27 more
core   +2 more sources

Wind Roche-lobe Overflow in Low-mass Binaries: Exploring the Origin of Rapidly Rotating Blue Lurkers

The Astrophysical Journal
Wind Roche-lobe overflow (WRLOF) is a mass-transfer mechanism proposed by Mohamed and Podsiadlowski for stellar binaries wherein the wind acceleration zone of the donor star exceeds its Roche-lobe radius, allowing stellar wind material to be transferred ...
Meng Sun, Sasha Levina, Seth Gossage, Vicky Kalogera, Emily M. Leiner, Aaron M. Geller, Zoheyr Doctor   +6 more
doaj   +1 more source