Spectroscopic outburst of central star of PN Lo 4

Details Spectroscopic outburst of central star of PN Lo 4 Spectroscopic outburst of central star of PN Lo 4

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atel.1858....1b&link_type=abstract

The Astronomer's Telegram, #1858

Astronomy and Astrophysics

Astronomy

Optical, Request For Observations, Binaries, Transients, Variables, Stars

Scientific paper

The hydrogen-deficient central star of the planetary nebula Longmore 4 (Lo 4; J2000: 10 05 45.7 -44 21 32) normally has a PG 1159-type absorption spectrum, with the O VI 3811-3834 doublet in emission. On three past occasions (one in 1992, two in 2006; H.E. Bond, 2008, ASP Conf Series 391, p. 129) the spectrum has changed temporarily to an emission-line [WCE] type, with strong emission at the C IV+He II complex near 4659-4686 A and O VI 5291.

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