ItemArticle

Identifying the population of T-Tauri stars in Taurus: UVoptical synergy

Title
Identifying the population of T-Tauri stars in Taurus: UVoptical synergy
Creator
Nayak P.K.; Narang M.; Puravankara M.; Tyagi H.; Banerjee B.; Sharma S.; Pandey R.; Surya A.; Mathew B.; Arun R.; Ujjwal K.; Kartha S.S.
Description
With the third data release of the Gaia mission, Gaia DR3 with its precise photometry and astrometry, it is now possible to study the behavior of stars at a scale never seen before. In this paper, we developed new criteria to identify T-Tauri stars (TTS) candidates using UV and optical color-magnitude diagrams (CMDs) by combining the GALEX and Gaia surveys. We found 19 TTS candidates and five of them are newly identified TTS in the Taurus molecular cloud (TMC), not cataloged before as TMC members. For some of the TTS candidates, we also obtained optical spectra from several Indian telescopes. We also present the analysis of distance and proper motion of young stars in the Taurus using data from Gaia DR3. We found that the stars in Taurus show a bimodal distribution with distance, having peaks at 130.17-1.241.31 pc and 156.25-5.001.86 pc. The reason for this bimodality, we think, is due to the fact that different clouds in the TMC region are at different distances. We further showed that the two populations have similar ages and proper motion distribution. Using the Gaia DR3 CMD, we showed that the age of Taurus is consistent with 1Myr. 2023, Indian Academy of Sciences.
Source
Journal of Astrophysics and Astronomy, Vol-44, No. 2
Date
2023-01-01
Publisher
Springer
Subject
Gaia; stars: HertzsprungRussell and CM diagrams; stars: kinematics and dynamics; stars: pre-main sequence
Coverage
Nayak P.K., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai, 400005, India, Institute of Astrophysics, Pontificia Universidad Catica de Chile, Av. Vicu MacKenna 4860, Santiago, 7820436, Chile; Narang M., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai, 400005, India, Academia Sinica Institute of Astronomy & Astrophysics, 11F of Astro-Math Bldg., No.1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan; Puravankara M., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai, 400005, India; Tyagi H., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai, 400005, India; Banerjee B., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai, 400005, India; Sharma S., Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital, 263001, India; Pandey R., Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital, 263001, India; Surya A., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai, 400005, India; Mathew B., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore, 560029, India; Arun R., Indian Institute of Astrophysics, 2nd Block Koramangala, Bangalore, 560034, India; Ujjwal K., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore, 560029, India; Kartha S.S., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore, 560029, India
Rights
All Open Access; Green Open Access
Relation
ISSN: 2506335
Format
Online
Language
English
Type
Article

Collection

Articles

Citation

Nayak P.K.; Narang M.; Puravankara M.; Tyagi H.; Banerjee B.; Sharma S.; Pandey R.; Surya A.; Mathew B.; Arun R.; Ujjwal K.; Kartha S.S., “Identifying the population of T-Tauri stars in Taurus: UVoptical synergy,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 27, 2025, https://archives.christuniversity.in/items/show/13931.

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