Modeling the Multiwavelength Evolution of the V960 Mon System

Abstract We study the evolution of the FU Ori object V960 Mon since its outburst, using available multiwavelength photometric time series over 8 yr, complemented by several epochs of moderate-dispersion spectrophotometry. We find that the source fading can be well-described by a decrease in the temp...

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Bibliographic Details
Published in:The Astrophysical journal 2023-08, Vol.953 (1), p.86
Main Authors: Carvalho, Adolfo S., Hillenbrand, Lynne A., Hambsch, Franz-Josef, Dvorak, Shawn, Sitko, Michael, Russell, Ray W., Hammond, Victoria, Connelley, Michael, Ashley, Michael C. B., Hankins, Matthew J.
Format: Article
Language:English
Subjects:
Accretion
Astrophysics
Atmospheric models
Deposition
Evolution
FU Orionis stars
Infrared sources
Line spectra
Optical bursts
Photometry
Spectrophotometry
Stellar accretion disks
Young stellar objects
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Summary:Abstract We study the evolution of the FU Ori object V960 Mon since its outburst, using available multiwavelength photometric time series over 8 yr, complemented by several epochs of moderate-dispersion spectrophotometry. We find that the source fading can be well-described by a decrease in the temperature of the inner disk, which results from a combination of decreasing accretion rate and increasing inner disk radius. We model the system with a disk atmosphere model that produces the observed variations in multiband photometry (this paper) and high-resolution spectral lines (a companion paper).
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/ace2cb