New 115-1115-1115-1objects in dark nebulae. II.
Results of a search for new emission objects in the region of darknebulae are presented. The observations were made in 1979 and 1985 atthe 40 Schmidt telescope of the Byurakan Astrophysical Observatory. Thespectra were obtained with a 4° objective prism (1100Å/mm nearH) on Kodak 103aE, 103aF, IIaF, and IIIaF plates with the use of RG1 andRG2 filters. Of the 52 emission stars discovered, five show variabilityin the H line intensity.
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New H-alpha-emission objects in the Cepheus region.
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Eine Beobachtungsnacht im Herbst.
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The Cygnus X region. XVII - H 110-alpha and H2CO line surveys with the 100 m-RT
A survey of the brightest features in the Cyg X region in H 110-alphaemission and the H2CO absorption line near 6 cm with the Effelsberg100-m radio telescope is presented. The resolution is 2.6 arcmin. S/N ofgreater than 5 was achieved for the recombination line, and an apparentoptical depth of greater than 0.05 in the H2CO could be detected for acontinuum brightness temperature of 2 K. The H 110-alpha lines can beinterpreted using the LTE approach, and unusually broad lines areascribed to blending. The radial-velocity distribution of both does notshow any support for the superbubble picture of the area advanced a fewyears ago (Bocharev and Sitnik, 1985). Two H II regions with largenegative velocities are located in the Pers spiral arm. Many details ofindividual sources are discussed, especially DR7 and DR 21.
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H-alpha Variables in the Field of NGC 7000, IC 5068 and IC 5070
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New H-alpha-emission Stars in the Regions NGC 7000, IC 5068 and IC 5070
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Photographie extrem schwacher H II-Regionen. Teil 2.
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The Cygnus X region. XV - A 4.8 GHz continuum survey with the 100 m-telescope
The results of a radio survey of the Cygnus X region at 6.2 cm arepresented and discussed. The observations and reductions are described,and maps of the area are presented. A bewildering amount of details andstructures are observed in the region. A simple count shows about 800local maxima or 10 per square degree in the average. A few selectedobjects are commented on.
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New H-alpha emission-line stars near the IC 5068-70 and NGC 7000 nebulae
Data are presented for 58 H-alpha emission-line stars near the citednebulae, which were observed with a 40-in. Schmidt telescope, a 4-degobjective prism, and a light filter for the spectral region between 6100and 6900 A. The limiting stellar magnitude for a 1-hr exposure was 18.5(photographic). The data include the equatorial coordinates of each starfor the 1950.0 equinox, their photographic magnitudes, and the relativeintensities of their H-alpha lines. The apparent distribution of thesestars in the investigated region is illustrated, and identificationcharts are provided.
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