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Radio Continuum and Water Maser Monitoring of the Outburst in HOPS 373: Free–Free Emission Does Not Respond to the Outburst

  • Authors: John J. Tobin, Doug Johnstone, Gregory Herczeg, Jeong-Eun Lee, Ho-Gyu Lee, Carlos Contreras Peña, Sung-Yong Yoon, Steve Mairs

John J. Tobin et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 9.

Continuum images at 1.3 cm toward HOPS 373 using all the data taken during a particular configuration. The maser positions are overlaid on the D-configuration images for the masers detected in those configurations (no masers detected in the C configuration). The D-configuration images show, by eye, that in 2021 the SW source was brighter than the NE source, reversing the pattern observed in 2015. Then, in 2022, the sources appear equally bright in the D configuration again. The comparison of source flux densities and their ratios is consistent with no variability within their uncertainties (Figure 10).

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