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Photometry and spectroscopy of the central star of the Trifid nebula
UBV photometry of the central star of the Trid nebula - HD 164492, which has so far been sus- pected of photometric as well as of radial velocity vari- ability - is presented. The results of ourExpand
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Tomographic Separation of Composite Spectra. X. The Massive Close Binary HD 101131
We present the first orbital elements for the massive close binary HD 101131, one of the brightest objects in the young open cluster IC 2944. This system is a double-lined spectroscopic binary in anExpand
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The early-type multiple system QZ Carinae
We present an analysis of the early-type quadruple system QZ Car, consisting of an eclipsing and a non-eclipsing binary. The spectroscopic investigation is based on new high dispersion echelle andExpand
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Improved estimates of the physical properties of the O-star binary V1007 Sco = HD 152248 and notes on several other binaries in the NGC 6231 cluster ,
Context. In spite of the importance of massive O-type stars for astrophysics, their accurate masses and other fundamental properties are still a matter of debate. Determining them reliably isExpand
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V505 Mon -An early-type binary with a disk
New spectra of the eclipsing binary V505 Mon (usually classied as B5 Ib) were obtained in the optical and UV regions. Only spectral lines of one component are visible, with K =9 3 km s 1 .A ccordingExpand
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Poster Abstracts (Session 5)
J.C. Morales, I. Ribas, C. Jordi, G. Torres, E.F. Guinan, and D. Charbonneau Institut d’Estudis Espacials de Catalunya, Barcelona, Spain Institut de Ciències de l’Espai – CSIC, Bellaterra, Spain,Expand
SZ Camelopardalis - an early-type eclipsing binary embedded in a multiple system ?
We present a spectroscopic and photometric analysis of a complex multiple system: the early-type eclipsing binary SZ Cam (O9 IV + B0.5 V) is physically bound to a third body, which itself is a closeExpand
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Improved Basic Physical Properties of the Oe-Star Binary V1007 Sco
An analysis of new and published sets of spectroscopic and photometric observations of the astrophysically important eclipsing O+O binary system V1007 Sco in NGC 6231, leads to significantly improvedExpand
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New times of minima and ephemeris for several OB eclipsing binaries
New times of minimum light were measured for several early-type eclipsing binaries: V337 Aql, V1182 Aql, V1331 Aql, IU Aur, QZ Car and V382 Cyg. The O C diagram for these systems is discussed and newExpand
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