نتایج جستجو برای: star identification
تعداد نتایج: 483510 فیلتر نتایج به سال:
M []The faint neutron star soft X–ray transient SAX J1810.8–2609 in quiescence [P.G. Jonker et al.] P.G. Jonkeremail : [email protected], R. Wijnands, M. van der Klis document abstract We present the analysis of a 35 ksec long Chandra observation of the neutron star soft X–ray transient (SXT) SAX J1810.8–2609. We detect three sources in the field of view. The position of one of them is consi...
A comprehensive understanding of the C. elegans STAR proteins GLD-1 and ASD-2 is emerging from a combination of studies. Those employing genetic analysis reveal in vivo function, others involving biochemical approaches pursue the identification of mRNA targets through which these proteins act. Lastly, mechanistic studies provide the molecular pathway of target mRNA regulation.
This paper presents a multidimensional conceptual Object-Oriented model, its structures, integrity constraints and query operations. It has been developed as an extension of UML core metaclasses to facilitate its usage, as well as to avoid the introduction of completely new concepts. YAM2 allows the representation of several semantically related star schemas, as well as summarizability and iden...
The identification of intracellular distributions of noble metal nanoparticles is of great utility for many biomedical applications. We present an effective method to distinguish intracellular from extracellular nanoparticles by selectively quenching the SERS signals from dye molecules adsorbed onto star-shaped gold nanoparticles that have not been internalized by cells.
Observations of PMS star rotation periods reveal slow rotators in young clusters of various ages, indicating that angular momentum is somehow removed from these rotating masses. The mechanism by which spin-up is regulated as young stars contract has been one of the longest-standing problems in star formation. Attempts to observationally confirm the prevailing theory that magnetic interaction be...
We have investigated the F0V star V398Aurigae (= 9 Aur) under the assumption that it is undergoing non-radial gravity mode oscillations and that the two principal periods given by Krisciunas et al. (1995) are correct. We find that the two periods are manifestations of an l = 3, |m| = 1 spheroidal mode and its toroidal corrections due to the rotation of the star. As far as we know, this is the f...
B,V-CCD photometry has been obtained for stars in two fields in the NE part of the Large Magellanic Cloud (LMC) and photographic photometry, and a calibrating CCD sequence, for a third field. The colour-magnitude diagrams (CMDs) and luminosity functions (LFs) for main sequence (MS) and red giant (RG) stars in the fields are established. The red giant clumps (RGCs) are found to be bimodal and to...
IRAS 03201+5459 is a late–type star with a circumstellar envelope according to its IRAS color. It has no identification at optical or near–infrared wavelengths. A full ISO–SWS spectrum between 2.3 and 43 μm was taken at a resolution of about ∼300 to investigate its nature. The spectrum shows the 9.7 μm feature in absorption, usually seen in O–rich envelopes, and the 3 μm feature in absorption w...
We report the discovery of two new R Coronae Borealis (RCB) stars in the Large Magellanic Cloud (LMC) using the MACHO project photometry database. The identification of both stars has been confirmed spectroscopically. One is a cool RCB star (T ef f ∼ 5000 K) characterized by very strong Swan bands of C 2 and violet bands of CN, and weak or absent Balmer lines, G-band and 12 C 13 C bands. The se...
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