منابع مشابه
Photometry of Nova V 1493 Aql ?
We report on photometric observations of V 1493 Aql during the early decline and highlight some uncommon aspects of the light curve . V 1493 Aql was hotter at maximum light than in the following phases, and was characterized by the presence of a long lasting secondary maximum, that, unlike in other novae, was quite red in color. The mean of three distance estimates yields d ∼ 18.8± 3.6 Kpc. Suc...
متن کاملA possible orbital period for the dwarf nova V1101 Aql⋆
We have performed a Discrete Fourier Transform on 136 CCD B, V and R frames of the Z Cam–type dwarf nova V1101 Aql. Our analysis indicates as possible orbital period Porb = 3 .46, though we cannot exclude the alias at 4.00. We estimate the distance to the system to be about 300 pc. We possibly discovered a bright bow–shaped nebulosity around the object.
متن کاملModelling the Recurrent Nova CI Aql in Quiescence
We present detailed photometric investigations of the recurrent nova CI Aql. New data obtained after the 2000 outburst are used to derive a 3D geometrical model of the system. The resulting light curves clearly indicate the existence of an asymmetric spray around the accretion disk, as claimed in the past e.g. for the super-soft X-ray source CAL87 in the LMC. The simulated light curves give us ...
متن کاملInterferometric Observations of V 1663 Aquilae ( Nova Aql 2005 )
We have resolved the classical nova V1663 Aql using long-baseline near-IR interferometry covering the period from ∼5–18 days after peak brightness. We directly measure the shape and size of the fireball, which we find to be asymmetric. In addition we measure an apparent expansion rate of 0.21± 0.03 mas day. Assuming a linear expansion model we infer a time of initial outburst approximately 4 da...
متن کاملWZ Sagittae - an old dwarf nova
We model the evolution of the accretion disk of WZ Sagittae during the long quiescence. We find that the large amount of mass in the disk derived from the outburst luminosity is a severe constraint and demands values of αc ≈ 0.001 in contradiction to some recent suggestions. We include in our computations the formation of an inner disk hole and the growth of the disk due to redistribution of an...
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: International Astronomical Union Colloquium
سال: 1981
ISSN: 0252-9211
DOI: 10.1017/s0252921100095233