منابع مشابه
The Optical Spectroscopic Evolution of V1974 Cygni (nova Cygni 1992)
Received ; accepted – 2 – ABSTRACT Optical observations of nova V1974 Cygni (Cygni 1992), spanning a 4 year period, have been used to study its spectroscopic evolution. The data cover a wavelength range from ∼ 3200 − 8000Å and follows the nebular evolutionary phase of the ejecta. We have modeled the integrated fluxes by means of the photoionization code CLOUDY. The models were run at a fixed ab...
متن کاملA revised identical elements model of arithmetic fact representation.
The identical elements model of arithmetic fact representation (T. C. Rickard, A. F. Healy, & L. E. Bourne, 1994) states that, for each triplet of numbers (e.g., 4, 7, 28) that are related by complementary multiplication and division problems, there are 3 independent fact representations in memory: (4, 7, x) --> 28; (28/7) --> 4; and (28/4) --> 7. In this article, the author reviews the evidenc...
متن کاملDecomposition of Multiport Elements in a Revised Multibond Graph Notation
Decomposition rules are derived for multiport-transformers, -resistors, -storage elements and -gyrators into land 2-port elements, junctions and bonds. It appears that it is useful to extend the vectorbond, or rather multibond, notation recently proposed by the author with a “multibond array”. Canonical forms are introduced on the basis of minimal realization, because decompositions of multipor...
متن کاملDistance and absorption of the tails in the CG 30 / CG 31 / CG 38 complex ?
From a mosaic of rather deep V and I images of the CG 30/CG 31 region we report distances and absorptions of these and other interesting interstellar features, the distances and absorptions estimates are based on shifting a new (V−I) 0 – M V relation obtained from nearby, presumably unreddened Hipparcos stars with luminosity class V classification to fit confining trends in the (V−I) – V diagra...
متن کاملToward a Unified Light Curve Model for Multi-wavelength Observations of V1974 Cygni (nova Cygni 1992)
We present a unified model for optical, ultraviolet (UV), and X-ray light curves of V1974 Cygni (Nova Cygni 1992). Based on an optically thick wind model of nova outbursts, we have calculated light curves and searched for the best fit model that is consistent with optical, UV, and X-ray observations. Our best fit model is a white dwarf (WD) of mass 1.05 M⊙ with a chemical composition of X = 0.4...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1924
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/84.3.169