2 DIFFERENT PERIODS PRESENT IN THE BINARY NUCLEUS OF THE PLANETARY-NEBULA LOTR5

Authors
KUCZAWSKA E MIKOLAJEWSKI M
Citation
E. Kuczawska et M. Mikolajewski, 2 DIFFERENT PERIODS PRESENT IN THE BINARY NUCLEUS OF THE PLANETARY-NEBULA LOTR5, Acta Astronomica, 43(4), 1993, pp. 445-453
Citations number
14
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Acta Astronomica → ACNP
ISSN journal
00015237
Volume
43
Issue
4
Year of publication
1993
Pages
445 - 453
Database
ISI
SICI code
0001-5237(1993)43:4<445:2DPPIT>2.0.ZU;2-U
Abstract
We present new photoelectric UBV observations of IN Com - the binary n ucleus of the planetary nebula LoTr5, carried out in April 1993 with t he double beam photometer at Mt. Suhora Observatory. Low-amplitude var iations were detected with a period of about 5.d92, in agreement with the results of Noskova (1989) and Bond and Livio (1990), but also high er frequency variability was discovered. A preliminary ephemeris is gi ven. We speculate on the origin of the observed variabilities.