Title of article :
FIRST BYURAKAN SPECTRAL SKY SURVEY. STARS OF LATE SPECTRAL TYPES.
Author/Authors :
Gigoyan، K. S. نويسنده , , BELT، -11° < delta < -7° نويسنده , , Hambaryan، V. V. نويسنده , , Azzopardi، M. نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1998
Pages :
-355
From page :
356
To page :
0
Abstract :
A 10th list of late-type M and C stars found on plates of the First Byurakan Spectral Sky Survey in the -11° <- delta <-7° belt with an area of about 1070 deg^ is given. The list contains data on 169 red stars, 117 of which were found for the first time: 8 are new C stars, 3 are C-star candidates, 104 are M stars, I is either an M or an S star, and I object on the survey plate cannot be classified. Of the 1 17 objects, 47 are unidentified IRAS sources. A statistical analysis of the objects that are and are not identified with IRAS sources shows that the identified stars are, with a high probability, brighter and have relatively more massive envelopes. Two stars were found to have fairly large brightness variability (with an amplitude of at least 6ʹ".0). Gas-dust shells are assumed lo exist around nine of the IRAS sources. The equatorial coordinates, spectral types, and stellar magnitudes, determined on Palomar E maps, are given for the selected objects.
Keywords :
Gannnia-ray bursts , cosmic rays , Theory
Journal title :
Astrophysics
Serial Year :
1998
Journal title :
Astrophysics
Record number :
30886
Link To Document :
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