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Дата изменения: Tue Nov 24 21:18:57 1998 Дата индексирования: Sat Sep 11 22:06:43 2010 Кодировка: Поисковые слова: cygnus |
In total 217 candidates were observed during the January - June, 1995,
of which 34 objects were observed with the 6m telescope, 183 objects
with the Calar Alto 2.2m telescope, and 4 with both instruments.
Due to the schedule of the observations almost all candidates are located
in the region
and
.
We find 59 new emission line galaxies,
4 quasars and 7 galaxies with absorption lines. For 11 of the known ELGs
we measure emission line ratios and make quantitative classification.
The remaining objects are stars or they
have featureless spectra with signal-to-noise ratios insufficient to detect
weak lines.
The overall detection efficiency of emission-line objects (calculated
after exclusion of 11 known ELGs) is rather low for
this first sample, (63/206 or 30.6 %).
This is especially true when compared with
the efficiency from Popescu et al. ([1997]) of about 76 %, for
the same photographic plates. Nevertheless, we will improve on it by
including additional selection criteria, as will be discussed in Section 5.3.