The Unusual Variability of the Large Magellanic Cloud Planetary Nebula RPJ 053059 – 683542

Content Provider	Semantic Scholar
Author	Rest, Armin Damke, Guillermo
Copyright Year	2008
Abstract	We present images and light curves of the bipolar Planetary Nebula RPJ 053059–683542 that was discovered in the Reid-Parker AAO/UKST Hα survey of the Large Magellanic Cloud (LMC). The emission from this object appears entirely nebular, with the central star apparently obscured by a central band of absorption that bisects the nebula. The light curves, which were derived from images from the SuperMACHO project at CTIO, showed significant, spatially resolved variability over the period 2002 January through 2005 December. Remarkably, the emission from the two bright lobes of the nebula vary either independently, or similarly but with a phase lag of at least one year. The optical spectra show a low level of nebular excitation, and only modest N enrichment. Infrared photometry from the 2MASS and SAGE surveys indicates the presence of a significant quantity of dust. The available data imply that the central star has a close binary companion, and that the system has undergone some kind of outburst event that caused the nebular emission to first brighten and then fade. Further monitoring, high-resolution imaging, and detailed IR polarimetry and spectroscopy would uncover the nature of this nebula and the unseen ionizing source. Subject headings: Magellanic Clouds — planetary nebulae: general — stars: evolution
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://arxiv.org/pdf/0709.2674v1.pdf
Language	English
Access Restriction	Open
Subject Keyword	2MASS Acer Aspire One American Academy of Osteopathy Diffuse Large B-Cell Lymphoma Excitation GUCY2C protein, human Gene Ontology Term Enrichment Heart rate variability Image resolution Little man computer Magellanic Catalogue of Stars Medical Subject Headings Photometry Planetary scanner Polarimetry STMN1 gene Stars, Celestial lobe
Content Type	Text
Resource Type	Article