A Brown Dwarf Census from the SIMP Survey
Abstract
We have conducted a near-infrared (NIR) proper motion survey, the Sondage Infrarouge de Mouvement Propre, in order to discover field ultracool dwarfs (UCD) in the solar neighborhood. The survey was conducted by imaging of the sky with the Cam\'era PAnoramique Proche-InfraRouge both in the southern hemisphere at the Cerro Tololo Inter-American Observatory 1.5 m telescope, and in the northern hemisphere at the Observatoire du Mont-M\'egantic 1.6 m telescope and comparing the source positions from these observations with the Two Micron All-Sky Survey Point Source Catalog (2MASS PSC). Additional color criteria were used to further discriminate unwanted astrophysical sources. We present the results of an NIR spectroscopic follow-up of 169 M, L, and T dwarfs. Among the sources discovered are 2 young field brown dwarfs, 6 unusually red M and L dwarfs, 25 unusually blue M and L dwarfs, 2 candidate unresolved L+T binaries, and 24 peculiar UCDs. Additionally, we add 9 L/T transition dwarfs (L6--T4.5) to the already known objects.
Cite
@article{arxiv.1607.06117,
title = {A Brown Dwarf Census from the SIMP Survey},
author = {Jasmin Robert and Jonathan Gagné and Étienne Artigau and David Lafrenière and Daniel Nadeau and René Doyon and Lison Malo and Loïc Albert and Corinne Simard and Daniella C. Bardalez Gagliuffi and Adam J. Burgasser},
journal= {arXiv preprint arXiv:1607.06117},
year = {2016}
}
Comments
85 pages, 9 figures. Accepted for publication in ApJ