R. Tylenda

Publications98
h-index17
Citations1,178
Highly Influential Citations150
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V1309 Scorpii: merger of a contact binary
Context. Stellar mergers are expected to take place in numerous circumstences in the evolution of stellar systems. In particular, they are considered as a plausible origin of stellar eruptions of the…
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The Strasbourg-ESO Catalogue of Galactic Planetary Nebulae. Parts I, II.
Evolution of V838 Monocerotis during and after the 2002 eruption
By fitting the available photometric data on V838 Mon with standard supergiant spectra we have derived principal stellar parameters, i.e. effective temperature, radius and luminosity, and followed…
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Main-Sequence Stellar Eruption Model for V838 Monocerotis
We propose that the energy source of the outburst of V838 Mon and similar objects is an accretion event, i.e., gravitational energy rather than thermonuclear runaway. We show that the merger of two…
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Angular dimensions of planetary nebulae
We have measured angular dimensions of 312 planetary nebulae from their images obtained in H α (or H α  + [NII]). We have applied three methods of measurements: direct measurements at the 10% level…
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On the light echo in V838 Mon
We present a theoretical outline of the light echo phenomenon and results of simple numerical simulations and we study the available images of the light echo in V838 Mon obtained with HST. An…
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Violent stellar merger model for transient events
We derive the constraints on the mass ratio for a binary system to merge in a violent process. We find that the secondary-to-primary stellar mass ratio should be 0.003 ≤ (M 2 /M 1 ) ≤ 0.15. A more…
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OGLE-2002-BLG-360: from a gravitational microlensing candidate to an overlooked red transient
OGLE-2002-BLG-360 was discovered as a microlensing candidate by the OGLE-III project. The subsequent light curve however clearly showed that the brightening of the object could not have resulted from…
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An analysis of the observed radio emission from planetary nebulae
We have analysed the radio fluxes for 264 planetary nebulae for which reliable measurements of fluxes at 1.4 and 5 GHz, and of nebular diameters are available. For many of the investigated nebulae,…
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V4332 Sagittarii revisited
The eruption of V4332 Sgr discovered in February 1994 shows striking similarities to that of V838 Mon started in January 2002. The nature of these eruptions is, however, enigmatic and unclear. We…
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