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The weakening outburst of the young eruptive star V582 Aur

The weakening outburst of the young eruptive star V582 Aur
The weakening outburst of the young eruptive star V582 Aur
V582 Aur is a pre-main-sequence FU Orionis type eruptive star, which entered a brightness minimum in 2016 March due to changes in the line-of-sight extinction. Here, we present and analyze new optical B, V, R C , and I C band multiepoch observations and new near-infrared J, H, and K S band photometric measurements from 2018 January–2019 February, as well as publicly available midinfrared Wide-field Infrared Survey Explorer (WISE) data. We found that the source shows a significant optical–near-infrared variability, and the current brightness minimum has not completely finished yet. If the present dimming originates from the same orbiting dust clump that caused a similar brightness variation in 2012, then our results suggest a viscous spreading of the dust particles along the orbit. Another scenario is that the current minimum is caused by a dust structure, that is entering and leaving the inner part of the system. The WISE measurements could be consistent with this scenario. Our long-term data, as well as an accretion disk modeling hint at a general fading of V582 Aur, suggesting that the source will reach the quiescent level in ~80 yr.
0004-637X
Zsidi, G.
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Abraham, P.
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Acosta-Pulido, J.A.
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Kospal, A.
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Kun, M.
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Szabo, Zs. M.
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Bodi, A.
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Cseh, B.
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Castro Segura, N.
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Hanyecz, O.
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Ignacz, B.
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Kalup, Cs.
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Kriskovics, L.
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Meszaros, L.
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Ordasi, A.
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Pal, A.
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Sarneczky, K.
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Seli, B.
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Sodor, A.
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Szakats, R.
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Zsidi, G.
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Abraham, P.
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Acosta-Pulido, J.A.
fc5838ac-2390-4272-a93d-ecaf4e90b6f8
Kospal, A.
bb3e1338-7329-447d-9838-950927f3a820
Kun, M.
feae1dfa-7f7b-448a-8f4d-894709dd2e5c
Szabo, Zs. M.
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Bodi, A.
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Cseh, B.
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Castro Segura, N.
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Hanyecz, O.
9a545bf4-359e-47b4-9ae9-cbd593874245
Ignacz, B.
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Kalup, Cs.
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Kriskovics, L.
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Meszaros, L.
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Ordasi, A.
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Pal, A.
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Sarneczky, K.
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Seli, B.
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Sodor, A.
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Szakats, R.
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Zsidi, G., Abraham, P., Acosta-Pulido, J.A., Kospal, A., Kun, M., Szabo, Zs. M., Bodi, A., Cseh, B., Castro Segura, N., Hanyecz, O., Ignacz, B., Kalup, Cs., Kriskovics, L., Meszaros, L., Ordasi, A., Pal, A., Sarneczky, K., Seli, B., Sodor, A. and Szakats, R. (2019) The weakening outburst of the young eruptive star V582 Aur. The Astrophysical Journal, 873, [130]. (doi:10.3847/1538-4357/ab05c9).

Record type: Article

Abstract

V582 Aur is a pre-main-sequence FU Orionis type eruptive star, which entered a brightness minimum in 2016 March due to changes in the line-of-sight extinction. Here, we present and analyze new optical B, V, R C , and I C band multiepoch observations and new near-infrared J, H, and K S band photometric measurements from 2018 January–2019 February, as well as publicly available midinfrared Wide-field Infrared Survey Explorer (WISE) data. We found that the source shows a significant optical–near-infrared variability, and the current brightness minimum has not completely finished yet. If the present dimming originates from the same orbiting dust clump that caused a similar brightness variation in 2012, then our results suggest a viscous spreading of the dust particles along the orbit. Another scenario is that the current minimum is caused by a dust structure, that is entering and leaving the inner part of the system. The WISE measurements could be consistent with this scenario. Our long-term data, as well as an accretion disk modeling hint at a general fading of V582 Aur, suggesting that the source will reach the quiescent level in ~80 yr.

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The Weakening Outburst of the Young Eruptive Star V582 Aur - Accepted Manuscript
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Accepted/In Press date: 8 February 2019
e-pub ahead of print date: 11 March 2019

Identifiers

Local EPrints ID: 429963
URI: http://eprints.soton.ac.uk/id/eprint/429963
ISSN: 0004-637X
PURE UUID: 06baa765-9d81-42ca-8f8b-81ee6b817872

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Date deposited: 09 Apr 2019 16:30
Last modified: 06 Oct 2020 17:09

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Contributors

Author: G. Zsidi
Author: P. Abraham
Author: J.A. Acosta-Pulido
Author: A. Kospal
Author: M. Kun
Author: Zs. M. Szabo
Author: A. Bodi
Author: B. Cseh
Author: O. Hanyecz
Author: B. Ignacz
Author: Cs. Kalup
Author: L. Kriskovics
Author: L. Meszaros
Author: A. Ordasi
Author: A. Pal
Author: K. Sarneczky
Author: B. Seli
Author: A. Sodor
Author: R. Szakats

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