4 papers · 1 filter
High-quality Spectrophotometry of the Planetary Nebula in the Fornax dSph
A. Y. Kniazev, E. K. Grebel, S. A. Pustilnik +1
We present results of NTT spectroscopy of the one known planetary nebula (PN) in the dwarf spheroidal galaxy Fornax, a gas-deficient Local Group galaxy that stopped its star format…
Spectroscopy of PNe in Sextans A, Sextans B, NGC 3109 and Fornax
Alexei Y. Kniazev, Eva K. Grebel, Alexander G. Pramskij +1
Planetary nebulae (PNe) and HII regions provide a probe of the chemical enrichment and star formation history of a galaxy from intermediate ages to the present day. We present the…
HS 0822+3542 - a new nearby extremely metal-poor galaxy
A. Y. Kniazev, S. A. Pustilnik, J. Masegosa +9
We present the results of spectrophotometry and BVR CCD photometry, as well as integrated HI radio measurements of a new blue compact galaxy (BCG) HS 0822+3542 with extremely low o…
Optical monitoring of CI Cam after the X-ray burst on April 1, 1998
E. A. Barsukova, S. N. Fabrika, S. A. Pustilnik +1
Results of optical spectral monitoring of CI Cam just after its a unusual bright and rapidly evolving X-ray burst are reported. This star is a symbiotic-type X-ray binary. The X-ra…