Results 31 to 40 of about 495 (240)

Rms–flux relation and fast optical variability simulations of the nova-like system MV Lyr [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
The stochastic variability (flickering) of the nova-like system (subclass of cataclysmic variable) MV Lyr yields a complicated power density spectrum with four break frequencies. Scaringi et al. (2012) analysed high-cadence Kepler data of MV Lyr, taken almost continuously over 600 days, giving the unique opportunity to study multicomponent Power ...
Dobrotka, A., Mineshige, S., Ness, J. -U.   +2 more
openaire   +2 more sources

Comprehensive Listing of 208 Nova White Dwarf Masses as the Primary Determinant of Spectral Class and Light-curve Class

The Astrophysical Journal
For Galactic novae, I calculate and collect a comprehensive catalog of 208 measures of white dwarf (WD) masses ( M _WD ) and 232 measures of average V magnitudes in quiescence ( V _q ). These are collected into a comprehensive catalog of most fundamental
Bradley E. Schaefer
doaj   +1 more source

Spectropolarimetric Evidence of Asymmetric Outburst in the Fast Nova V1494 Aquilae

The Astrophysical Journal, 2001
We present our extended polarimetric observations of a fast nova from the premaximum to transition stages. The observations were made for V1494 Aquilae (=Nova Aql 1999 No. 2) at the Dodaira Observatory of the National Astronomical Observatory of Japan between 1999 December 2 and 2000 March 29. We discovered that the light from the nova had already been
K. S. Kawabata, H. Akitaya, N. Hirakata, R. Hirata, Y. Ikeda, M. Isogai, T. Karube, M. Kondoh, M. Matsumura, S. Nakayama, A. Okazaki, M. Seki   +11 more
openaire   +1 more source

Multiwavelength observations of V407 Lupi (ASASSN-16kt) – a very fast nova erupting in an intermediate polar [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
39 pages, 32 figures, 23 tables, accepted for publication in ...
E Aydi, M Orio, A P Beardmore, J-U Ness, K L Page, N P M Kuin, F M Walter, D A H Buckley, S Mohamed, P Whitelock, J P Osborne, J Strader, L Chomiuk, M J Darnley, A Dobrotka, A Kniazev, B Miszalski, G Myers, N Ospina, M Henze, S Starrfield, C E Woodward   +21 more
openaire   +4 more sources

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source

Exploring the Maximum Magnitude versus Rate of Decline Relation for Novae in M31

The Astrophysical Journal Supplement Series
The results of a two-decade-long R -band photometric survey of novae in M31 are presented. From these data, R -band light curves have been determined for 180 novae with data sufficient for estimating the peak brightness and subsequent rate of decline ...
J. Grace Clark, Kamil Hornoch, Allen W. Shafter, Hana Kučáková, Jan Vraštil, Peter Kušnirák, Marek Wolf   +6 more
doaj   +1 more source

Single‐Crystalline Lateral p‐SnS/n‐SnSe van der Waals Heterostructures by Vapor Transport Growth with In Situ Bi Doping

Advanced Functional Materials, EarlyView.
In‐situ doping during growth of SnSe and subsequent attachment of SnS produces high‐quality lateral pn‐heterojunctions between van der Waals semiconductors. Electron beam induced current measurements demonstrate electrically active pn‐junctions, paving the way for devices that harness charge separation at lateral interfaces in layered heterostructures.
Peter Sutter, Valerio Piazza, Pramod Ghimire, Anna Fontcuberta i Morral, Eli Sutter   +4 more
wiley   +1 more source

Fully Self-consistent Nova Explosion Models Reproducing Light Curves of KT Eri, V339 Del, V597 Pup, and SMC NOVA 2016-10a

The Astrophysical Journal
The rising phase toward the optical maximum of a classical nova is one of the last frontiers of nova study. Constructing free–free emission model light curves based on our fully self-consistent nova explosion models, we present several theoretical light ...
Mariko Kato, Izumi Hachisu, Hideyuki Saio   +2 more
doaj   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

The critical mass ratio for W UMa-type contact binary systems [PDF]

Serbian Astronomical Journal
Contact binaries are close binary systems in which both components fill their inner Roche lobes so that the stars are in direct contact, and in potential mass and energy exchange.
Arbutina Bojan, Wadhwa Surjit
doaj   +1 more source