Results 31 to 40 of about 248,213 (282)

Candidate Eclipsing Binary Systems with a δ Scuti Star in Northern TESS Field [PDF]

Research in Astronomy and Astrophysics, 2022
The existence of pulsating stars in eclipsing binaries has been known for decades. These types of objects are extremely valuable systems for astronomical studies as they exhibit both eclipse and pulsation variations.
F. Kahraman Aliçavuş, D. Gumus, O. Kirmizitas, O. Ekinci, Sinan Cavus, Yusuf Talha Kaya, F. Aliçavuş   +6 more
semanticscholar   +1 more source

New progress in the extraction and identification of Mexican cochineal (Dactylopius coccus) in fresh dyed wool and dyed wool with artificially accelerated aging and color description

Color Research &Application, Volume 48, Issue 1, Page 151-164, January/February 2023., 2023
Abstract The main purpose of this study was to determine if a method developed in the laboratory by HPLC‐ESI‐QToF was able to identify the characteristic compounds of the Mexican cochineal (Dactylopius coccus) in freshly dyed wool fiber and following an artificially accelerated aging process.
Karen Cruz Mojica, Mayra León Santiago, Emiliano Varela García, Marisol Reyes Lezama, Everardo Tapia Mendoza   +4 more
wiley   +1 more source

A Search for Exoplanets in Short-Period Binary Star Systems [PDF]

Journal of Astronomy and Space Sciences, 2012
This paper reports the progress of a search for exoplanets with S-type orbits in short-period binary star systems. The selected targets have stellar orbital periods of just a few days. These systems are eclipsing binaries so that exoplanet transits, if
Ronald Kaitchuck, Garrison Turner, Joseph Childers   +2 more
doaj   +1 more source

KEPLER ECLIPSING BINARY STARS. VIII. IDENTIFICATION OF FALSE POSITIVE ECLIPSING BINARIES AND RE-EXTRACTION OF NEW LIGHT CURVES [PDF]

, 2016
The Kepler mission has provided unprecedented, nearly continuous photometric data of ∼200,000 objects in the ∼105 deg2 field of view (FOV) from the beginning of science operations in May of 2009 until the loss of the second reaction wheel in May of 2013.
M. Abdul-Masih, A. Prša, K. Conroy, S. Bloemen, T. Boyajian, L. Doyle, C. Johnston, V. Kostov, D. Latham, G. Matijevič, Avi Shporer, J. Southworth   +11 more
semanticscholar   +1 more source

The Surface Brightness-color Relations Based on Eclipsing Binary Stars: Toward Precision Better than 1% in Angular Diameter Predictions [PDF]

, 2016
In this study we investigate the calibration of surface brightness–color (SBC) relations based solely on eclipsing binary stars. We selected a sample of 35 detached eclipsing binaries with trigonometric parallaxes from Gaia DR1 or Hipparcos whose ...
D. Graczyk, P. Konorski, G. Pietrzyński, W. Gieren, J. Storm, N. Nardetto, A. Gallenne, P. Maxted, P. Kervella, Z. Kołaczkowski   +9 more
semanticscholar   +1 more source

A transiting companion to the eclipsing binary KIC002856960 [PDF]

, 2012
We present an early result from an automated search of Kepler eclipsing binary systems for circumbinary companions. An intriguing tertiary signal has been discovered in the short period eclipsing binary KIC002856960. This third body leads to transit-like
Batalha, Brown, Bryson, C. A. Watson, Carter, D. Armstrong, D. Pollacco, Derekas, Doyle, F. Faedi, H. M. Cegla, Haas, I. Skillen, Irwin, J. Burton, J. McCormac, Koch, Lada, Morales, P. McDaid, Prsa, Quintana, Slawson, Steffen, Torres, Welsh, Y. Gómez Maqueo Chew   +26 more
core   +2 more sources

DETERMINING THE AGE OF THE KEPLER OPEN CLUSTER NGC 6819 WITH A NEW TRIPLE SYSTEM AND OTHER ECLIPSING BINARY STARS [PDF]

, 2016
As part of our study of the old (∼2.5 Gyr) open cluster NGC 6819 in the Kepler field, we present photometric (Kepler and ground-based BVRCIC) and spectroscopic observations of the detached eclipsing binary WOCS 24009 (Auner 665; KIC 5023948) with a short
Lauren N. Brewer, E. Sandquist, R. Mathieu, K. Milliman, A. Geller, Mark W. Jeffries, Jr., J. Orosz, K. Brogaard, I. Platais, H. Bruntt, F. Grundahl, D. Stello, S. Frandsen   +12 more
semanticscholar   +1 more source

Solvent types used for the preparation of hydrogels determine their mechanical properties and influence cell viability through gelatine and calcium ions release

Journal of Biomedical Materials Research Part B: Applied Biomaterials, Volume 111, Issue 2, Page 314-330, February 2023., 2023
By the selection of the hydrogel composition, applied solvents, and concentration of the cross‐linking compound, it is possible to modify the properties of the materials designated for bioinks for 3D printing in Bone Tissue Engineering. Abstract Alginate‐gelatin hydrogels are the most commonly used materials for 3D bioprinting.
Karolina Rosińska, Mateusz Bartniak, Adrianna Wierzbicka, Anna Sobczyk‐Guzenda, Dorota Bociaga   +4 more
wiley   +1 more source

An Adaptive Optics Survey of Stellar Variability at the Galactic Center [PDF]

, 2018
We present a $\approx 11.5$ year adaptive optics (AO) study of stellar variability and search for eclipsing binaries in the central $\sim 0.4$ pc ($\sim 10''$) of the Milky Way nuclear star cluster.
Becklin, Eric E., Do, Tuan, Gautam., Abhimat Krishna, Ghez, Andrea M., Hosek Jr., Matthew W., Jia, Siyao, Lu, Jessica R., Martinez, Gregory D., Matthews, Keith, Morris, Mark R., Sakai, Shoko, Witzel, Gunther   +11 more
core   +3 more sources

Kepler Eclipsing Binary Stars. VI. Identification of Eclipsing Binaries in the K2 Campaign 0 Data-set [PDF]

, 2015
The original {\it Kepler} mission observed and characterized over 2400 eclipsing binaries in addition to its prolific exoplanet detections. Despite the mechanical malfunction and subsequent non-recovery of two reaction wheels used to stabilize the ...
D. LaCourse, K. Jek, T. Jacobs, Troy Winarski, T. Boyajian, S. Rappaport, R. Sanchis-Ojeda, K. Conroy, Lorne A. Nelson, T. Barclay, D. Fischer, J. Schmitt, Ji Wang, K. Stassun, J. Pepper, J. Coughlin, Avi Shporer, A. Prvsa   +17 more
semanticscholar   +1 more source