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The large amplitude outburst of the young star HBC 722 in NGC 7000/IC 5070, a new FU Orionis candidate
E. Semkov, S. Peneva, U. Munari +2
We report the discovery of a large amplitude outburst from the young star HBC 722 (LkHA 188 G4) located in the region of NGC 7000/IC 5070. On the basis of photometric and spectrosc…
The FUor Candidate V582 Aurigae: First Photometric and Spectroscopic Observations
Evgeni Semkov, Stoyanka Peneva, Michel Dennefeld
One of the most attractive events in the pre-main sequence evolution is the FU Orionis (FUor) outburst. Because only a small number of FUor stars have been detected to date, photom…
A long-term photometric study of the FU Orionis star V 733 Cep
S. P. Peneva, E. H. Semkov, U. Munari +1
The FU Orionis candidate V733 Cep was discovered by Roger Persson in 2004. The star is located in the dark cloud L1216 close to the Cepheus OB3 association. Because only a small nu…
Short Term Flux and Colour Variations in Low-Energy Peaked Blazars
Bindu Rani, Alok C. Gupta, A. Strigachev +11
We have measured multi-band optical flux and colour variations for a sample of 12 low energy peaked blazars on short, day-to-month, timescales. Our sample contains six BL Lacertae…