Results 41 to 50 of about 17,300 (305)

LTD064402+245919, Compact Binary or Subgiant with Red Star Eclipsing Binary?

Research Notes of the AAS, 2022
Abstract Recently, a single-line spectroscopic binary, LTD064402+245919, has been discovered by Yang et al. Using data from LAMOST and ZTF, the unseen companion is estimated to have a mass of 1–3 M ⊙, orbiting a subgiant with orbital period of 14.50 days, making it a good compact binary candidate without X-ray emission.
Jincheng Guo, Cheng Liu
openaire   +2 more sources

Constraining the Variability and Binary Fraction of Galactic Center Young Stars

, 2016
We present constraints on the variability and binarity of young stars in the central 10 arcseconds (~0.4 pc) of the Milky Way Galactic Center (GC) using Keck Adaptive Optics data over a 12 year baseline.
Chappell, Samantha, Do, Tuan, Gautam, Abhimat K., Ghez, Andrea M., Lu, Jessica R., Morris, Mark R., Sakai, Shoko, Sitarski, Breann N., Witzel, Gunther   +8 more
core   +2 more sources

Quantitative spectroscopy of close binary stars [PDF]

, 2011
The method of spectral disentangling has now created the opportunity for studying the chemical composition in previously inaccessible components of binary and multiple stars.
Brogaard, Clausen, Clausen, Cugier, De Mink, Grundahl, Hadrava, Hadrava, Hadrava, Hareter, Hensberge, Hensberge, Hensberge, J. Southworth, K. Pavlovski, Linder, Lyubimkov, Mahy, Meynet, Mkrtichian, North, Pavlovski, Pavlovski, Pavlovski, Pavlovski, Sarna, Simon, Southworth, Southworth, Tamajo, Tkachenko, Tomkin, Torres, Torres, Wheelwright, Yakut   +35 more
core   +1 more source

The Mass and Angular Momentum Relation of Eclipsing Binaries [PDF]

Journal of Astronomy and Space Sciences, 1998
With a total 3780 eclipsing binary system in the Catalogue of Approximate Photometric and Absolute Elements of Eclipsing Variable Stars by Svechnikov & Kuznetsova (1990), the empirical relations between the systemic mass and orbital angular momentum have
Kyu-Dong Oh
doaj  

Kepler Eclipsing Binary Stars. V. Identification of 31 Eclipsing Binaries in the K2 Engineering Data-set [PDF]

, 2014
Over 2500 eclipsing binaries were identified and characterized from the ultra-precise photometric data provided by the Kepler space telescope. Kepler is now beginning its second mission, K2, which is proving to again provide ultra-precise photometry for ...
Abdul-Masih, Michael, Barclay, Thomas, Bloemen, Steven, Boyajian, Tabetha, Conroy, Kyle E., Latham, David W., Parvizi, Mahmoud, Prša, Andrej, Quarles, Billy, Shporer, Avi, Stassun, Keivan G.   +10 more
core   +3 more sources

SDSS J0926+3624: The shortest period eclipsing binary star [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
Accepted for publication in MNRAS. 19 pages, including 15 figures and 6 tables.
Copperwheat, C.M., Marsh, T.R., Littlefair, S.P., Dhillon, V.S., Ramsay, G., Drake, A.J., Gänsicke, B.T., Groot, P.J., Hakala, P., Koester, D., Nelemans, G., Roelofs, G., Southworth, J., Steeghs, D., Tulloch, S.   +14 more
openaire   +5 more sources

Variability of Young Massive Stars in the Galactic Super Star Cluster Westerlund 1

, 2007
This paper presents the first optical variability study of the Westerlund 1 super star cluster in search of massive eclipsing binary systems. A total of 129 new variable stars have been identified, including the discovery of 4 eclipsing binaries that are
Alceste Z. Bonanos, Rauw G., Schweickhardt J., Townsend R. H. D., Westerlund B. E.   +4 more
core   +3 more sources

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

Advanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta, Simone Bertucci, Jose Mendoza‐Carreño, Agustín Mihi, Paola Lova, Davide Comoretto, Ullrich Steiner, Marco Lattuada, Andrea Dodero   +8 more
wiley   +1 more source

Photometric Observations of Eccentric Accretion in Algol-type Binary Stars [PDF]

Journal of Astronomy and Space Sciences, 2012
Some Algol-type interacting binary stars exhibit strange photometric variations that can be phase-dependent and/or secular. This paper discusses the possibility of explaining these observed variations as resulting from an accretion structure eclipsing ...
Phillip A. Reed
doaj   +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.
A. Collier Cameron, A. J. Norton, Akerlof, Alekseev, Alekseev, B. Enoch, Bejgman, Boller, Bouvier, Bouvier, Bouvier, Brancewicz, Brelstaff, C. A. Haswell, C. Hellier, Chrastina, Collier Cameron, Collier Cameron, D. J. Christian, D. M. Wilson, D. Pollacco, Deeter, Dempsey, Engle, Evans, Feast, Gershberg, Hall, Hall, Hartmann, I. Skillen, J. Irwin, J. P. Nicholas, Jeffries, K. Horne, Koen, Loomis, M. Gallaway, Meinunger, Monet, N. Parley, Neuhauser, P. J. Wheatley, Pallavicini, Pettersen, Pizzolato, Pribulla, Qian, R. A. Street, R. G. West, R. Ryans, Rosner, S. R. Kane, Schmidt, Schmidt, Selam, Skillen, Stanishev, Strassmeier, T. A. Lister, Tamuz, Turner, Vilhu, W. I. Clarkson, Walter, Wegner, Wheatley, Zhang   +67 more
core   +3 more sources