90 citations · 208 across the 11 of their papers we have counts for
5 papers · 2 filters
AGB and post-AGB stars
Dieter Engels
Intermediate mass stars (1-8 solar masses) evolve along the Asymptotic Giant Branch after completion of hydrogen and helium core burning. At the tip they lose for several ten to hu…
Stellar evolution and the 'O-rich AGB sequence'
F. M. Jimenez-Esteban, D. Engels, P. Garcia-Lario
The `O-rich AGB sequence' is a well defined area occupied by oxygen-rich AGB stars (OH/IR) in the IRAS two-colour diagram [12]-[25] vs [25]-[60]. This sequence is interpreted in te…
HS 2134+0400 - new very metal-poor galaxy, a representative of void population?
S. A. Pustilnik, D. Engels, A. Y. Kniazev +3
We present the SAO 6m telescope spectroscopy of a blue compact galaxy (BCG) HS 2134+0400 discovered in frame of the dedicated Hamburg/SAO survey for Low Metallicity BCGs (HSS-LM).…
HS0139+0559, HS0229+8016, HS0506+7725 and HS0642+5049: Four new long-period cataclysmic variables
A. Aungwerojwit, B. T. Gaensicke, P. Rodriguez-Gil +9
We present time-resolved optical spectroscopy and photometry of four relatively bright (V~14.0-15.5) long-period cataclysmic variables (CVs) discovered in the Hamburg Quasar Survey…
The Hamburg/SAO survey for emission-line galaxies. VI. The sixth list of 126 galaxies
S. A. Pustilnik, D. Engels, V. A. Lipovetsky +12
We present the sixth list with results of the Hamburg/SAO Survey for Emission-Line Galaxies. The final list resulted from follow-up spectroscopy conducted with the 4.5m MMT telesco…