Optical identification of iras point sources on the basis of low-dispersion FBS spectra. III |
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Authors: | A M Mickaelian K S Gigoyan |
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Institution: | (1) Byurakan Astrophysical Observatory, Armenia |
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Abstract: | Part three of optically identified point sources from the IRAS Point Source Catalog contains 113 objects. The identifications
were based on the Digitized Sky Survey (DSS), the First Byurakan Survey, blue and red maps from the Palomar Sky Survey, and
infrared fluxes at 12, 25, 60, and 100 μm in the region of +61° ≤ δ ≤ + 65° and 11h15m ≤ α ≤ 18h35m with an area of 200 sq. deg. Of the 119 sources in this region, 6 could not be identified owing to the absence of optical
counterparts with the given coordinates. For the identified objects we determined their optical coordinates, their departures
from the IR coordinates, and their stellar V magnitudes, color indices (CI), and preliminary types. The objects have optical
magnitudes in the range of 8n–21m. Of the 113 objects, 31 turned out to be stars of spectral types K and M, 1 is a planetary nebula, 2 are candidates to be
quasi- stellar objects, and 79 are galaxies. A list of the 48 nonstellar objects is given. The identified galaxies include
Seyfert candidates, interacting pairs, galaxies with companions, superassociations, etc. The galaxies are in groups in many
cases, and the IR emission may be due to heating of intergalactic matter within a group. Finder charts for these objects from
the DSS are given.
Translated from Astrofizika, Vol. 41, No. 2, pp. 251–262, April-June, 1998. |
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