TT ARIETIS - The low state
1985; IOP Publishing; Volume: 290; Linguagem: Inglês
10.1086/163028
ISSN1538-4357
AutoresA. W. Shafter, Paula Szkody, James Liebert, W. R. Penning, Howard E. Bond, A. D. Grauer,
Tópico(s)Astronomical Observations and Instrumentation
Resumoview Abstract Citations (90) References (39) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS TT ARIETIS : the low state. Shafter, A. W. ; Szkody, P. ; Liebert, J. ; Penning, W. R. ; Bond, H. E. ; Grauer, A. D. Abstract A comprehensive photometric and spectroscopic study of the low state of the novalike variable TT Ari has been made with observations spanning the UV to IR spectral regions. The roughly 5 mag drop in the system's luminosity from the high state indicates that the mass-transfer rate decreased by more than two orders of magnitude. The drastic reduction in the luminosity of the accretion disk between the high and low states enabled the white dwarf component to be directly observed for the first time. The broad absorption profiles at various lines and the UV energy distribution are best fitted by a hot white dwarf. A lower limit of 200 pc for the distance to TT Ari is derived, and the behavior of TT Ari is compared to that of another novalike variable, MV Lyr. The long-term photometric behavior of TT Ari makes it a typical member of the VY Scl subclass of novalike variables. Publication: The Astrophysical Journal Pub Date: March 1985 DOI: 10.1086/163028 Bibcode: 1985ApJ...290..707S Keywords: Binary Stars; Cataclysmic Variables; Dwarf Novae; Stellar Mass Accretion; Stellar Spectrophotometry; Ultraviolet Spectra; H Alpha Line; Iue; Radial Velocity; Stellar Luminosity; Astrophysics full text sources ADS | data products SIMBAD (1) MAST (1) INES (1)
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