A model of an expanding giant that swallowed planets for the eruption of V838 Monocerotis

Abstract

In early 2002 V838 Monocerotis had an extraordinary outburst whose nature is still unclear. The optical light curve showed at least three peaks and imaging revealed a light echo around the object - evidence for a dust shell which was emitted several thousand years ago and now reflecting light from the eruption. Spectral analysis suggests that the object was relatively cold throughout the event, which was characterized by an expansion to extremely large radii. We show that the three peaks in the light curve have a similar shape and thus it seems likely that a certain phenomenon was three times repeated. Our suggestion that the outburst was caused by the expansion of a red giant, followed by the successive swallowing of three relatively massive planets in close orbits, supplies a simple explanation to all observed peculiarities of this intriguing object.

arXiv comment5 pages, 1 LaTex file, 2 .eps figures, accepted for publication in MNRAS

References in corpus (19)

• The accretion of planets and brown dwarfs by giant stars -- II. solar mass stars on the red giant branch
• An energetic stellar outburst accompanied by circumstellar light echoes
• Can Planets Influence the Horizontal Branch Morphology?
• The mysterious eruption of V838 Mon
• Main-sequence stellar eruption model for V838 Mon
• The Accretion of Brown Dwarfs and Planets by Giant Stars -- I. AGB Stars
• Nova Sagittarii 1994 #1 (V4332 Sagittarii): The Discovery and Evolution of an Unusual Luminous Red Variable Star
• A Critical Examination of Li Pollution and Giant Planet Consumption by a Host Star
• A Search for ${}^6$Li in Stars with Planets
• Planet Consumption and Stellar Metallicity Enhancements
• Dynamical Stability of Earth-Like Planetary Orbits in Binary Systems
• The peculiar variable V838 Mon
• New measurement of the Lithium-6/Lithium-7 isotopic ratio in the extra-solar planet host star HD82943 and line blending in the Li 6708 A region
• Planets in habitable zones: A study of the binary Gamma Cephei
• The post-outburst photometric behaviour of V838 Mon
• Near infra-red spectroscopy of V838 Monocerotis
• CK Vul as a Candidate Eruptive Stellar Merging Event
• The Effects of Planets and Brown Dwarfs on Stellar Rotation and Mass-Loss
• Spectroscopic and Spectropolarimetric Observations of V838 Mon

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