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Backyard Worlds: Planet 9 Discovery of an Unusual Low-mass Companion to an M Dwarf at 80 pc
Research Notes of the AAS Pub Date : 2021-01-27 , DOI: 10.3847/2515-5172/abdf46
Austin Rothermich 1 , Adam C. Schneider 2, 3 , Jacqueline K. Faherty 4 , Katelyn Allers 5 , Daniella Bardalez-Gagliuffi 4 , Aaron M. Meisner 6 , Marc Kuchner 7 , J. Davy Kirkpatrick 8 , Dan Caselden 9 , Paul Beaulieu 10
Affiliation  

We present the discovery of CWISE J203546.35–493611.0, a peculiar M8 companion to the M4.5 star APMPM J2036−4936 discovered through the citizen science project Backyard Worlds: Planet 9. Given CWISE J203546.35–493611.0's proper motion (μ α , μ δ ) = (−126 22, −478 23) and angular separation of 342 from APMPM 2036−4936, we calculate a chance alignment probability of 1.15 10−6. Both stars in this system appear to be underluminous, and the spectrum obtained for CWISE J203546.35–493611.0 shows a triangular H band. Further study of this system is warranted to understand these peculiarities.



中文翻译:

后院世界:行星 9 发现了一个不寻常的低质量伴星与一个 M 矮星,占 80 pc

我们展示了 CWISE J203546.35–493611.0 的发现,它是通过公民科学项目后院世界:行星 9 发现的 M4.5 恒星 APMPM J2036−4936 的特殊 M8 伴星。鉴于 CWISE J203546.35–493611.0 的自行(μ α , μ δ ) = (-126 22, -478 23) 并且与 APMPM 2036-4936 的角间距为 342,我们计算出 1.15 10 -6的机会对齐概率。该系统中的两颗恒星似乎都很暗,CWISE J203546.35–493611.0 获得的光谱显示出三角形H波段。有必要进一步研究该系统以了解这些特性。

更新日期:2021-01-27
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