Substellar Objects in Nearby Young Clusters (SONYC). IV. A Census of Very Low Mass Objects in NGC 1333

Alexander Scholz, Koraljka Muzic, Vincent Geers, Mariangela Bonavita, Ray Jayawardhana, Motohide Tamura

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54 Citations (Scopus)

Abstract

SONYC—Substellar Objects in Nearby Young Clusters—is a program to investigate the frequency and properties of young substellar objects with masses down to a few times that of Jupiter. Here we present a census of very low mass objects in the ~1 Myr old cluster NGC 1333. We analyze near-infrared spectra taken with Fiber Multi-Object Spectrograph/Subaru for 100 candidates from our deep, wide-field survey and find 10 new likely brown dwarfs with spectral types of M6 or later. Among them, there are three with gsimM9 and one with early L spectral type, corresponding to masses of 0.006 to
Original languageEnglish
Article number6
JournalAstrophysical Journal
Volume744
Issue number1
Early online date7 Dec 2011
DOIs
Publication statusPublished - 1 Jan 2012

Keywords

  • brown dwarfs
  • circumstellar matter
  • planetary systems
  • stars: formation
  • stars: low-mass

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