منابع مشابه
The three-body system V505 Sagittarii
It is known that the period of the eclipsing binary V 505 Sgr changes, and that the changes can be explained at least partly by a light-time effect. The system is also known as a speckle binary. In this paper parameters of the third body orbit are suggested in order to explain both sets of data. Some discrepancies in the size of the orbit and radial velocity data remain. Next periastron passage...
متن کاملNova Sagittarii 1994 # 1 ( V 4332 Sagittarii ) : The Discovery and Evolution of an Unusual Luminous Red Variable Star
We report photometry and spectroscopy of the evolution of Nova Sagittarii 1994 #1 (V4332 Sagittarii) during outburst. We compare the photometric and spectral evolution of this outburst to known classes of outbursts – including classical novae and outbursts occurring on symbiotic stars – and find this object does not conform to any known class of outburst. The closest match to the behavior of th...
متن کاملSpitzer Observations of V4332 Sagittarii: Detection of Alumina Dust
We present broad-band 24, 70 and 160 μm photometry, 5-35 μm and 55-90 μm spectra of the eruptive variable V4332 Sgr from Spitzer observations. The distinguishing feature of the 5-35 μm spectrum is an unusually broad absorption feature near 10 μm at the position generally associated with silicate-rich dust. Through radiative transfer modeling, we show that this broad feature cannot arise from si...
متن کاملApophysomyces variabilis Infections in Humans
Clinical and epidemiological characterization of dengue hemorrhagic fever cases in northeastern Brazil. To the Editor: The fungus Apo-physomyces elegans (order Mucorales) is a thermotolerant species that causes severe infections among humans. In contrast to other fungi that cause zy-gomycosis, which have a worldwide distribution and are rarely found in immunocompetent hosts, A. elegans has been...
متن کاملLooking for Dust and Molecules in Nova V 4743 Sagittarii ⋆
We present 1.2 mm continuum images and spectral line observations of CO(1–0) and SiO(3–2) rotational transitions of the recent nova V4743 Sgr. The nova is detected at 1.2 mm showing a variable millimetre emission. Only upper limits of T ⋆ A = 0.06 K for CO and T ⋆ A = 0.03 K for SiO could be derived. We discuss the results in terms the nature of the millimetre emission favouring dust from a pha...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1917
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.19172042303