Initial results of our spectro-photometric monitoring of XZ Tau
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917639401504768 |
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| author | Ghosh, Arpan Sharma, Saurabh Ninan, Joe Philip Ojha, Devendra K. Verma, Aayushi Sahu, Tarak Chand Pandey, Rakesh Singh, Koshvendra |
| author_facet | Ghosh, Arpan Sharma, Saurabh Ninan, Joe Philip Ojha, Devendra K. Verma, Aayushi Sahu, Tarak Chand Pandey, Rakesh Singh, Koshvendra |
| contents | We present here initial results of our spectro-photometric monitoring of XZ Tau. During our monitoring period, XZ Tau exhibited several episodes of brightness variations in timescales of months at optical wavelengths in contrast to the mid-infrared wavelengths. The color evolution of XZ Tau during this period suggest that the brightness variations are driven by changes in accretion from the disc. The mid-infrared light curve shows an overall decline in brightness by $\sim$ 0.5 and 0.7 magnitude respectively in WISE W1 (3.4 $μ$m) and W2 (4.6 $μ$m) bands. The emission profile of the hydrogen recombination lines along with that of Ca II IRT lines points towards magnetospheric accretion of XZ Tau. We have detected P Cygni profile in H$β$ indicating of outflowing winds from regions close to accretion. Forbidden transitions of oxygen are also detected, likely indicating of jets originating around the central pre-main sequence star. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_09361 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Initial results of our spectro-photometric monitoring of XZ Tau Ghosh, Arpan Sharma, Saurabh Ninan, Joe Philip Ojha, Devendra K. Verma, Aayushi Sahu, Tarak Chand Pandey, Rakesh Singh, Koshvendra Solar and Stellar Astrophysics We present here initial results of our spectro-photometric monitoring of XZ Tau. During our monitoring period, XZ Tau exhibited several episodes of brightness variations in timescales of months at optical wavelengths in contrast to the mid-infrared wavelengths. The color evolution of XZ Tau during this period suggest that the brightness variations are driven by changes in accretion from the disc. The mid-infrared light curve shows an overall decline in brightness by $\sim$ 0.5 and 0.7 magnitude respectively in WISE W1 (3.4 $μ$m) and W2 (4.6 $μ$m) bands. The emission profile of the hydrogen recombination lines along with that of Ca II IRT lines points towards magnetospheric accretion of XZ Tau. We have detected P Cygni profile in H$β$ indicating of outflowing winds from regions close to accretion. Forbidden transitions of oxygen are also detected, likely indicating of jets originating around the central pre-main sequence star. |
| title | Initial results of our spectro-photometric monitoring of XZ Tau |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2404.09361 |