New Eruptive YSOs from SPICY and WISE

Carlos Contreras Peña; M. Ashraf; J. E. Lee; G. Herczeg; P. W. Lucas; Z. Guo; D. Johnstone; H. G. Lee; J. Jose

doi:10.5303/JKAS.2023.56.2.253

New Eruptive YSOs from SPICY and WISE

Carlos Contreras Peña, M. Ashraf, J. E. Lee, G. Herczeg, P. W. Lucas, Z. Guo, D. Johnstone, H. G. Lee, J. Jose

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Abstract

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.

Original language	English
Pages (from-to)	253-262
Number of pages	10
Journal	Journal of the Korean Astronomical Society (JKAS)
Volume	56
Issue number	2
DOIs	https://doi.org/10.5303/JKAS.2023.56.2.253
Publication status	Published - 28 Dec 2023

Keywords

astro-ph.SR
stars: formation
stars: pre-main sequence
stars: protostars
stars: variables: T Tauri, Herbig Ae/Be

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10.5303/JKAS.2023.56.2.253Licence: CC BY-SA

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title = "New Eruptive YSOs from SPICY and WISE",

abstract = "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.",

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doi = "10.5303/JKAS.2023.56.2.253",

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T1 - New Eruptive YSOs from SPICY and WISE

AU - Peña, Carlos Contreras

AU - Ashraf, M.

AU - Lee, J. E.

AU - Herczeg, G.

AU - Lucas, P. W.

AU - Guo, Z.

AU - Johnstone, D.

AU - Lee, H. G.

AU - Jose, J.

N1 - © Published under Creative Commons license CC BY-SA 4.0.

PY - 2023/12/28

Y1 - 2023/12/28

N2 - 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.

AB - 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.

KW - astro-ph.SR

KW - stars: formation

KW - stars: pre-main sequence

KW - stars: protostars

KW - stars: variables: T Tauri, Herbig Ae/Be

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U2 - 10.5303/JKAS.2023.56.2.253

DO - 10.5303/JKAS.2023.56.2.253

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SN - 1225-4614

VL - 56

SP - 253

EP - 262

JO - Journal of the Korean Astronomical Society (JKAS)

JF - Journal of the Korean Astronomical Society (JKAS)

IS - 2

ER -

New Eruptive YSOs from SPICY and WISE

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