A study of the photometric and spectroscopic variations of the prototypical FU Orionis-type star V1057 Cyg
arXiv:2105.10405 · doi:10.3847/1538-4357/ac04b3
Abstract
Among the low-mass pre-main sequence stars, a small group called FU Orionis-type objects (FUors) are notable for undergoing powerful accretion outbursts. V1057 Cyg, a classical example of an FUor, went into outburst around 1969-1970, after which it faded rapidly, making it the fastest fading FUor known. Around 1995, a more rapid increase in fading occurred. Since that time, strong photometric modulations have been present. We present nearly 10 years of source monitoring at Piszkéstető Observatory, complemented with optical/near-infrared photometry and spectroscopy from the Nordic Optical Telescope, Bohyunsan Optical Astronomy Observatory, Transiting Exoplanet Survey Satellite, and the Stratospheric Observatory for Infrared Astronomy. Our light curves show continuation of significant quasi-periodic variability in brightness over the past decade. Our spectroscopic observations show strong wind features, shell features, and forbidden emission lines. All of these spectral lines vary with time. We also report the first detection of [S II], [N II], and [O III] lines in the star.
37 pages, 20 figures
References in corpus (26)
- The Transiting Exoplanet Survey Satellite
- The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
- Molecfit: A general tool for telluric absorption correction. I. Method and application to ESO instruments
- Empirical Color Transformations Between SDSS Photometry and Other Photometric Systems
- Molecfit: A general tool for telluric absorption correction II. Quantitative evaluation on ESO-VLT X-Shooter spectra
- Early Science with SOFIA, the Stratospheric Observatory for Infrared Astronomy
- Discovery of a Companion Candidate in the HD169142 Transition Disk and the Possibility of Multiple Planet Formation
- CSI 2264: Probing the inner disks of AA Tau-like systems in NGC 2264
- An Enigmatic Pointlike Feature within the HD 169142 Transitional Disk
- Photometric variability of the T Tauri star TW Hya on time scales of hours to years
- Spitzer-IRS Observations of FU Orionis Objects
- Thermodynamics of Giant Planet Formation: Shocking Hot Surfaces on Circumplanetary Disks
- Long-wavelength excesses of FU Orionis objects: flared outer disks or infalling envelopes?
- The Formation of a Stellar Association in the NGC 7000/IC 5070 Complex: Results from Kinematic Analysis of Stars and Gas
- Gaia 18dvy: a new FUor in the Cygnus OB3 association
- Outbursts in Global Protoplanetary Disk Simulations
- Multi-wavelength study of the low-luminosity outbursting young star HBC 722
- Distinguishing between different mechanisms of FU-Orionis-type luminosity outbursts
- V346 Nor: the post-outburst life of a peculiar young eruptive star
- Brightness variations of the FUor-type eruptive star V346 Nor
- Interferometric view of the circumstellar envelopes of northern FU Orionis-type stars
- High Resolution Optical and NIR Spectra of HBC 722
- High-resolution spectroscopic monitoring observations of FU Orionis-type object, V960 Mon
- The outbursting protostar 2MASS~22352345+7517076 and its environment
- Reading between the lines: Disk emission, wind, and accretion during the ZCMa NW outburst
- Disc light variability in the FUor star V646 Puppis as observed by TESS and from the ground