천문학회지 (Journal of The Korean Astronomical Society)

  • 제56권2호
  • /
  • Pages.253-262
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  • 2023
  • /
  • 1225-4614(pISSN)
  • /
  • 2288-890X(eISSN)
한국천문학회 (The Korean Astronomical Society)
권호 표지
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New Eruptive YSOs from SPICY and WISE

  • Carlos Contreras Pena (Department of Physics and Astronomy, Seoul National University) ;
  • Mizna Ashraf (Indian Institute of Science Education and Research (IISER) Tirupati) ;
  • Jeong-Eun Lee (Department of Physics and Astronomy, Seoul National University) ;
  • Gregory Herczeg (Kavli Institute for Astronomy and Astrophysics, Peking University) ;
  • Phil Lucas (Centre for Astrophysics Research, University of Hertfordshire) ;
  • Zhen Guo (Instituto de Fisica y Astronomia, Universidad de Valparaiso) ;
  • Doug Johnstone (NRC Herzberg Astronomy and Astrophysics) ;
  • Ho-Gyu Lee (Korea Astronomy and Space Science Institute) ;
  • Jessy Jose (Indian Institute of Science Education and Research (IISER) Tirupati)
  • 투고 : 2023.09.13
  • 심사 : 2023.11.21
  • 발행 : 2023.12.30
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초록

This work presents four high-amplitude variable YSOs (≃3 mag at near- or mid-IR wavelengths) arising from the SPICY catalog. Three outbursts show a duration that is longer than 1 year, and are still ongoing. And additional YSO brightened over the last two epochs of NEOWISE observations and the duration of the outburst is thus unclear. Analysis of the spectra of the four sources confirms them as new members of the eruptive variable class. We find two YSOs that can be firmly classified as bona fide FUors and one object that falls in the V1647 Ori-like class. Given the uncertainty in the duration of its outburst, an additional YSO can only be classified as a candidate FUor. Continued monitoring and follow-up of these particular sources is important to better understand the accretion process of YSOs.

키워드

과제정보

We are grateful to all past and current JKAS authors for their trust and their support. CCP was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (No. 2019R1A6A1A10073437). J.-E. Lee was supported by the New Faculty Startup Fund from Seoul National University and the NRF grant funded by the Korean government (MSIT) (grant number 2021R1A2C1011718). ZG is supported by the ANID FONDECYT Postdoctoral program No. 3220029. ZG acknowledges support by ANID, - Millennium Science Initiative Program - NCN19_171. D.J. is supported by NRC Canada and by an NSERC Discovery Grant. PWL received some funding from grant ST/R000905/1 of the UK Science and Technology Facilities Council.

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