Radio and infrared observations of the faint nebula GM 24.
The faint nebulosity CM24=PP85 listed by Parsamian and Petrosian (1979) was observed at infrared (1-10 pm) and radio (6 cm and CO line) wavelengths in the...
Recent variability of the central star of the planetary nebula NGC 2346.
The authors report photoelectric and CCD photometry of V651 Mon, the central star of the planetary nebula NGC 2346, made in April - May and November, 1992...
Search for the near infrared counterparts of compact H II regions and/or H2O masers.
The authors present the preliminary results of a search for near-infrared counterparts of compact H II regions and/or H2O masers in the Galactic Plane, probably...
Seyfert Galaxies with Circumnuclear/Nuclear Starbursts
In this paper, we present our preliminary results on Seyfert galaxies with circumnuclear/nuclear starburst (SB) activity. We have searched the recent available...
RESUMEN. Presentamos observaciones de la estrella HD 213534 (GX Peg) efectuadas dentro de una campafia para determinar los limites de detecciotn e tierra de...
Temperature fluctuations and the chemical composition of planetary nebulae of Type I.
The authors present two new methods to determine the electron temperature based on the He I line intensities. The temperatures derived from these methods are...
The Effect of Piston Errors on the Image Quality of Ground-Based Segmented Mirror Telescopes
The errors associated with a segmented primary mirror limit the image quality obtainable with those astronomical telescopes which employ them. It is necessary...
The effect of temperature fluctuations on the determination of the carbon abundance of planetary nebulae.
By combining the C III λλ1906+1909 with the C II λ4267 line intensities it is possible to determine T(C++); this temperature is, in general, considerably...