An UXor among FUors: Extinction-related brightness variations of the young eruptive star V582 Aur

P. Ábrahám, Kóspál, M. Kun, O. Fehér, G. Zsidi, J. A. Acosta-Pulido, Bruce G. Elmegreen, L. Viktor Tóth, Manuel Güdel

Research output: Contribution to journalArticle

Abstract

The early evolution of Sun-like stars may be interspersed by energetic FU Orionis (FUor) type accretion outbursts. We analysed eight years of photometric and spectroscopic variability of V582 Aur, a bona fide FUor, in outburst. While the accretion rate derived from near-infrared measurements was constant, radical brightness changes occurred due to dust clumps crossing the line of sight. The brightness minima resemble the variability patterns of the UXor phenomenon. Orbiting density enhancements or short-lived clumps moving in and out of the line-of-sight may explain these observations. Our message is that during FUor outbursts the inner disk is a dynamically active place, affecting the initial conditions for planet formation.

Original languageEnglish
Pages (from-to)390-392
Number of pages3
JournalProceedings of the International Astronomical Union
DOIs
Publication statusAccepted/In press - Jan 1 2019

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Keywords

  • accretion disks
  • circumstellar matter
  • stars: Pre-main-sequence

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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