Results 71 to 80 of about 170,850 (201)

Constraints on the Formation of M31’s Stellar Halo from the SPLASH Survey

Galaxies, 2017
The SPLASH (Spectroscopic and Photometric Landscape of Andromeda’s Stellar Halo) Survey has observed fields throughout M31’s stellar halo, dwarf satellites, and stellar disk.
Karoline Gilbert
doaj   +1 more source

Solar and stellar rotation [PDF]

, 2007
Workshop on Solar and Stellar Physics through Eclipses -- MAR 27-29, 2006 -- Ankara Univ, ORSEM Campus, Side, Antalya, TURKEYThe secular evolution of the stellar rotation through angular momentum loss, driven by the stellar wind, and the consequences of ...
Demircan, O., Filiz-Ak, N., Eker, Z.
core   +1 more source

Chaotic Dynamics of Stellar Spin in Binaries and the Production of Misaligned Hot Jupiters

EPJ Web of Conferences, 2015
Motivated by observed hot Jupiter systems with high stellar obliquities, we examine the dynamics of stellar spin in planetary systems with distant stellar companions, with inclinations sufficiently high so that the planet undergoes Kozai-Lidov ...
Anderson Kassandra R., Storch Natalia I., Lai Dong   +2 more
doaj   +1 more source

Exploring central star variability of planetary nebulae using gaia photometry

Scientific Reports
This study presents an analysis of the variability of 81 central stars of planetary nebulae (CSPNe) are identified as variable in Gaia Data Release 3 (DR3).
M. A. NegmEldin, A. Ali, G. M. Hamed, A. Essam   +3 more
doaj   +1 more source

Stellar winds

This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor F.R.N.
openaire   +2 more sources

The µ Herculis system solved after nearly three centuries

Astronomy & Astrophysics
Context. µ Herculis is a bright, nearby quadruple system. Its brightest member, µ Her Aa, displays solar-like oscillations, establishing the system as a crucial benchmark for asteroseismology, provided that its mass can be determined independently of ...
Marcussen Marcus L., Lund Mikkel N., Grundahl Frank, Huber Daniel, Knudstrup Emil, Kraus Adam L., Baranec Christoph, Pallé Pere L., Dupuy Trent J., Huber Guillaume, Ou James, Werber Zach, Zhang Ruihan, Riddle Reed   +13 more
doaj   +1 more source

Benchmarking pre-main sequence stellar evolutionary tracks using disk-based dynamical stellar masses

Astronomy & Astrophysics
Stellar masses are a fundamental property to understand models of pre-main sequence evolution, but their values derived from Hertzsprung–Russell (HR) diagrams are strongly model dependent.
Zallio Luigi, Vioque Miguel, Andrews Sean M., Empey Aaron, Rosotti Giovanni P., Miotello Anna, Manara Carlo F., Carpenter John M., Deng Dingshan, Kurtovic Nicolás T., Law Charles J., Longarini Cristiano, Paneque-Carreño Teresa, Teague Richard, Villenave Marion, Yen Hsi-Wei, Zagaria Francesco   +16 more
doaj   +1 more source

Reverse Shock Revisited in Cassiopeia A with Chandra

The Astrophysical Journal
Using data from the Chandra X-ray Observatory, we revisit the reverse shock in the supernova remnant (SNR) Cassiopeia A. Based on spectroscopy of a series of annuli in the northwest (NW) and southeast (SE), we get the radial profiles of the S/Si K α line
Yin Wu, X. J. Yang
doaj   +1 more source

Discovery of the first octupole pulsation mode in a δ Scuti star

Astronomy & Astrophysics
Aims. We attempt to understand better how stellar pulsations in close binary systems are affected, and possibly induced, by tidal, Coriolis, and centrifugal forces. Methods.
Rappaport S. A., Jayaraman R., Handler G., Kurtz D., Zhang V., Gagliano R., Powell B., Fuller J., Borkovits T., Kostov V., Daszyńska-Daszkiewicz J.   +10 more
doaj   +1 more source

STEllAR-GROUP/hpx: HPX V1.2.0: The C++ Standards Library for Parallelism and Concurrency

, 2018
<p>Please see here for all changes: <a href="https://stellar-group.github.io/hpx/docs/sphinx/tags/1.2.0/html/releases/whats_new_1_2_0.html">https://stellar-group.github.io/hpx/docs/sphinx/tags/1.2.0/html/releases/whats_new_1_2_0.html</a>
Shoshana Jakobovits, Devang Bacharwar, Nikunj Gupta, Anton Bikineev, Taeguk Kwon, Bcorde5, Steven R. Brandt, Mikael Simberg, Vinay Amatya, Matthew Anderson, Zahra Khatami, Thomas Heller, Andreas Schäfer, Bryce Adelstein Lelbach aka wash, Martin Stumpf, Hartmut Kaiser, John Biddiscombe, Jeroen Habraken, Daniel Bourgeois, Erik Schnetter, Christopher, Kevin Huck, Patrick Diehl, Grant Mercer, Shuangyang Yang, Denis Blank, Lars Viklund, Agustín Bergé, Marcin Copik, Bibek Wagle, Adrian Serio   +30 more
core   +1 more source