Thirteen New M Dwarf + T Dwarf Pairs Identified with WISE/NEOWISE
Abstrak
We present the discovery of 13 new widely separated T dwarf companions to M dwarf primaries, identified using Wide-field Infrared Survey Explorer/NEOWISE data by the CatWISE and Backyard Worlds: Planet 9 projects (hereafter BYW). This sample represents an ∼60% increase in the number of known M + T systems, and allows us to probe the most extreme products of binary/planetary system formation, a discovery space made available by the CatWISE2020 catalog and the BYW effort. Highlights among the sample are WISEP J075108.79-763449.6, a previously known T9 thought to be old due to its spectral energy distribution, which was found by Zhang et al. (2021b) to be part of a common proper motion pair with L34-26 A, a well-studied young M3 V star within 10 pc of the Sun; CWISE J054129.32-745021.5 B and 2MASS J05581644-4501559 B, two T8 dwarfs possibly associated with the very fast-rotating M4 V stars CWISE J054129.32745021.5 A and 2MASS J05581644-4501559 A; and UCAC3 52-1038 B, which is among the widest late-T companions to main-sequence stars, with a projected separation of ∼7100 au. The new benchmarks presented here are prime JWST targets, and can help us place strong constraints on the formation and evolution theory of substellar objects as well as on atmospheric models for these cold exoplanet analogs.
Topik & Kata Kunci
Penulis (55)
F. Marocco
J. Kirkpatrick
A. Schneider
A. Meisner
Mark Popinchalk
C. Gelino
J. Faherty
A. Burgasser
D. Caselden
Jonathan Gagn'e
C. Aganze
Daniella C. Bardalez-Gagliuffi
S. Casewell
Chih-Chun Hsu
Rocio Kiman
P. Eisenhardt
M. Kuchner
Daniel Stern
Léopold Gramaize
Arttu Sainio
T. P. Bickle
Austin Rothermich
William Pendrill
Melina Th'evenot
Martin Kabatnik
Giovanni Colombo
Hiro Higashimura
Frank Kiwy
Elijah J. Marchese
N. S. Andersen
Christopher C. Tanner
Jim Walla
Zbigniew Wȩdracki
The Backyard Worlds Collaboration CaltechIPAC
Us
Backyard Worlds Planet Nine
Usno
NSF's NOIRLab
Amnh
Graduate Center
Cuny
Hunter College
U. Diego
Plan'etarium Rio Tinto Alcan
Ca
U. Montr'eal
A. College
U. Leicester
Uk
Caltech
Nasajpl
NasaGsfc
T. O. University
Earl of March Intermediate School
Independent Researcher
Akses Cepat
- Tahun Terbit
- 2024
- Bahasa
- en
- Total Sitasi
- 2×
- Sumber Database
- Semantic Scholar
- DOI
- 10.3847/1538-4357/ad3f1d
- Akses
- Open Access ✓