arXiv Open Access 2021

Backyard Worlds: Planet 9 Discovery of an Unusual Low-mass Companion to an M Dwarf at 80 pc

Austin Rothermich Adam C. Schneider Jacqueline K. Faherty Katelyn Allers Daniella Bardalez-Gagliuffi +5 lainnya

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Abstrak

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 ($μ_α$, $μ_δ$) = ($-$126$\pm$22, $-$478$\pm$23) and angular separation of 34.2$''$ from APMPM 2036-4936, we calculate a chance alignment probability of $1.15 \times 10^{-6}$. 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.

Topik & Kata Kunci

astro-ph.SR astro-ph.EP

Penulis (10)

Austin Rothermich

Adam C. Schneider

Jacqueline K. Faherty

Katelyn Allers

Daniella Bardalez-Gagliuffi

Aaron M. Meisner

Marc Kuchner

J. Davy Kirkpatrick

Dan Caselden

Paul Beaulieu

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Rothermich, A., Schneider, A.C., Faherty, J.K., Allers, K., Bardalez-Gagliuffi, D., Meisner, A.M. et al. (2021). Backyard Worlds: Planet 9 Discovery of an Unusual Low-mass Companion to an M Dwarf at 80 pc. https://arxiv.org/abs/2102.02815

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Tahun Terbit: 2021
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓