T Tauri stars as $\gamma$-ray source in the Rho Ophiuchi region

A. Fil\'ocomo; E. A. P\'assaro; G. J. Escobar; J. A. Combi; J. F. Albacete Colombo

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T Tauri stars as $\gamma$-ray source in the Rho Ophiuchi region

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arxiv 2006.16413 v1 pith:KHM33352 submitted 2020-06-29 astro-ph.HE

A. Filócomo , G. J. Escobar , J. F. Albacete Colombo , E. A. Pássaro , J. A. Combi This is my paper · ORCID

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abstract

More than 30 % of $\gamma$-ray sources detected in the last source catalog of the Fermi satellite have no observational counterpart at other frequencies. A significant fraction of these sources is positionally in agreement with star-forming regions dominated by associations of T Tauri stars. Rho Ophiuchi, which is one of the closest star-forming regions, matches the unidentified Fermi source 4FGL J1625.3-2338. In this work we modeled the spectral energy distribution considering some dominant radiative processes in T Tauri stars. Accounting for a total of 22 Class III T Tauri stars in the region, integrated $\gamma$-ray luminosity in the 100 MeV to 100 GeV energy range is consistent with the observed in the catalog for the 4FGL J1625.3-2338 source.

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