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- Centre National de la Recherche ScientifiqueFR463 papers
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35 papers · 1 filter
On the secondary star of the cataclysmic variable 1RXS J094432.1+035738
R. E. Mennickent, G. Tovmassian, S. V. Zharikov +4
We present V and Rc band photometry and optical near-infrared spectroscopy of the cataclysmic variable 1RXS J094432.1+035738. We detected features of a cool secondary star, which c…
The Stellar Populations of the Cetus Dwarf Spheroidal Galaxy
A. Sarajedini, E. K. Grebel, A. E. Dolphin +7
We present Hubble Space Telescope Wide Field Planetary Camera 2 photometry in the V and I passbands of the recently discovered Local Group dwarf spheroidal galaxy in Cetus. Our col…
Supergravity and the Poincare group
P. Salgado, M. Cataldo, S. del Campo
An action for 3+1-dimensional supergravity genuinely invariant under the Poincare supergroup is proposed. The construction of the action is carried out considering a bosonic lagran…
Hubble Space Telescope imaging of a peculiar stellar complex in NGC 6946
S. S. Larsen, Yu. N. Efremov, B. G. Elmegreen +4
The stellar populations in a stellar complex in NGC 6946 are analyzed on images taken with the Wide Field Planetary Camera 2 on board the Hubble Space Telescope. The complex is pec…
The cataclysmic variable CW 1045+525: a secondary-dominated dwarf nova?
C. Tappert, J. R. Thorstensen, W. H. Fenton +3
We present spectroscopic and photometric observations of the cataclysmic variable CW 1045+525. Both the optical spectrum and the photometric lightcurve show a strong contribution o…
High spectral resolution time-resolved optical spectroscopy of V893 Sco
E. Mason, W. Skidmore, S. B. Howell +1
We present high resolution time-resolved optical spectra of the high inclination short orbital period dwarf nova V893 Sco. We performed spectral analysis through radial velocity me…