Results 51 to 60 of about 13,402 (159)

Characterizing the Photometric Response of the ANS Collaboration Monitoring Program

Open Astronomy, 2012
the ANS Collaboration uses the UBV RCIC filters from various commercial manufacturers (Omega Optical, Custom Scientific, Schuler, Optec, Astrodon) for its ongoing photometric monitoring of symbiotic stars.
Munari U., Moretti S.
doaj   +1 more source

A 9 Month Hubble Space Telescope Near-UV Survey of M87. II. A Strongly Enhanced Nova Rate near the Jet of M87

The Astrophysical Journal
The 135 classical novae that we have discovered in M87 with two Hubble Space Telescope imaging surveys appear to be strongly concentrated along that galaxy’s jet.
Alec M. Lessing, Michael M. Shara, Rebekah Hounsell, Shifra Mandel, Nava Feder, William Sparks   +5 more
doaj   +1 more source

Mechanisms for magnetic braking boost and disruption: The role of irradiation-driven winds and the convective turnover time spike in cataclysmic variables

Astronomy & Astrophysics
Context. The saturated, boosted, and disrupted (SBD) magnetic braking (MB) model is an empirical prescription that has recently gained support from observations of diverse close binary systems.
Dodon Vladislav, Li Xiang-Dong, Xu Xiao-jie, Galiullin Ilkham, Sibgatullin Askar   +4 more
doaj   +1 more source

Hard Emission from Classical Novae [PDF]

, 1992
The thermonuclear model of classical novae has been very successful in explaining many observed features of novae. It also predicts unique gamma-ray and X-ray signatures, a few of which possibly have already been observed. We describe recent developments
Leising, Mark D
core   +1 more source

Confirmation of SRGt 062340.2-265751 as a nova-like cataclysmic variable with a possible magnetic nature

Astronomy & Astrophysics
SRGt 062340.2-265751, a cataclysmic variable identified by SRG/eROSITA thanks to its significant X-ray variability, remains poorly characterised despite the multi-wavelength follow-up.
Cúneo V. A., Schwope A. D., Kurpas J., Avakyan A., Brink J., Buckley D. A. H., Maitra C., Veresvarska M.   +7 more
doaj   +1 more source

Palmae novae columbianae [PDF]

PALMAE NOVAE COLUMBIANAE Palmae novae columbianae ( - ) Cover ( - ) Text (665) Abb.: Tafel III ([1]

core  

The orbital and superhump periods of the dwarf nova HS 0417+7445 in Camelopardalis [PDF]

, 2011
We present the 2005-2010 outburst history of the SU UMa-type dwarf HS 0417+7445, along with a detailed analysis of extensive time-series photometry obtained in March 2008 during the second ecorded superoutburst of the system.
P. Dubovský, Dubovský, P., Staels, B., Brady, S. (Steve), S. Brady, Gänsicke, B. T. (Boris T.), I. Miller, B. Staels, Shears, J. H. (Jeremy H.), B.T. Gänsicke, J.H. Shears, Miller, I.   +11 more
core   +1 more source

Ellipsoidal modulation and multi-wavelength activity in the pre-cataclysmic binary RX J1553.0+4457

Astronomy & Astrophysics
Context. RX J1553.0+4457 (TMTS J15530469+4457458) is a detached post-common-envelope binary with a cool white dwarf and an active late-type companion. The origins of its optical modulation, rapid activity, and ultraviolet-to-mid-infrared spectral energy ...
Wu S.-Y., Gritsevich M., Lao Q.-H., Castro-Tirado A. J., Li Z., Hu Y.-D., Pérez-García I., Sánchez-Ramírez R., Castro-Segura N., Fernández-García E. J., Caballero-García M. D., Guziy S., Olivares I., Sakowska J. D., García-Segura G., Hiriart D., Lee W. H., Meintjes P. J., van Heerden H. J., Martín-Carrillo A., Hanlon L., Maury A., Hernández-García L., Carrasco-García I. M., Castillo-Carrión S., Castellón A., Pandey S. B., Pérez del Pulgar C. J., Reina A. J., Bai J.-M., Fan Y.-F., Wang C.-J., Xin Y.-X., Xiong D.-R., Zhao X.-H., Mao J., Lun B.-L., Ye K., Cui C.-Z., Valeev A. F., Zhang B.-B., Sun T.-R.   +41 more
doaj   +1 more source

The UBV Color Evolution of Classical and Symbiotic Novae

Acta Polytechnica CTU Proceedings, 2015
We identified a general course of classical nova outbursts in the B − V vs. U − B diagram. It has been reported that novae show spectra similar to A–F supergiants near optical light maximum.
I. Hachisu, M. Kato
doaj   +1 more source

Feasibility and transcriptomic analysis of betalain production by biomembrane surface fermentation of Penicillium novae-zelandiae

AMB Express, 2018
In this study, a biomembrane surface fermentation was used to produce red pigments of Penicillium novae-zelandiae, and the significant improvement in pigment production by the addition of 0.4 g/L of tyrosine demonstrated that the red pigments probably ...
Hailei Wang, Yi Li, Kun Zhang, Yingqun Ma, Ping Li   +4 more
doaj   +1 more source