A Search for long-period brightness variations of the T Tauri stars T Tau, DI Cep, and SU Aur

Исмаилов, Н. З.; Shustarev, P. N.; Alieva, A. A.; Alimardanova, F. N.

doi:10.1134/s1063772909070063

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…At these wavelengths, there is no substantial contribution to the total light of the system from the T TauS components. Therefore, Ismailov et al (2009) argue that the long term cyclic variations in brightness must come from T TauN and not from T TauS.…”

Section: Introductionmentioning

confidence: 99%

Periodic variability in the emission spectrum of T Tauri

Исмаилов

Quliev²,

Khalilov³

et al. 2010

A&A

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Context. Long timescale periodic variations in T Tauri stars may be related to changes in their protoplanetary disks. Aims. A lengthy homogeneous series of spectral observations of the CTTS T TauN has been analyzed. Methods. We search for periodicity in the equivalent widths of the emission lines in the optical and in the UV. Results. Significant periodic variation is found in the equivalent widths of Hβ and CaII emission features on a time scale of 33 ± 1.5 days. Variations in the UV emission lines based on archival IUE spectra are also consistent with this period. Conclusions. This is clearly not the rotation period of the star, which is known to be 2.8 days, and must arise somewhere in the magnetosphere, disk or outflow region.

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Section: Introductionmentioning

confidence: 99%

Periodic variability in the emission spectrum of T Tauri

Исмаилов

Quliev²,

Khalilov³

et al. 2010

A&A

Self Cite

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“…T Tauri stars can display similar periodic phenomena with periods exceeding the rotational periods of the stars, which can be explained by the presence of additional nearby companions [37,38]. Our analysis provides indirect arguments for the presence of several forming bodies around the central star.…”

Section: Discussionmentioning

confidence: 83%

Light curve analysis for RY Tau

Исмаилов

Adygezalzade

2012

Astron. Rep.

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We have analyzed a master light curve of the classical T Tauri star RY Tau. The brightness variations observed in 1983-2004 were found to be periodic. A period of 377 ± 10 d is derived using a frequency analysis. A statistical analysis shows that the brightness variability cannot be described by a normal distribution. The brightness variations could be due to the presence of some bodies being formed in the circumstellar environment.

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A Search for long-period brightness variations of the T Tauri stars T Tau, DI Cep, and SU Aur

Cited by 2 publications

References 21 publications

Periodic variability in the emission spectrum of T Tauri

Periodic variability in the emission spectrum of T Tauri

Light curve analysis for RY Tau

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