Results from the Gemini NICI Planet-Finding Campaign

Beth A. Biller*, Michael C. Liu, Zahed Wahhaj, Eric L. Nielsen, Thomas L. Hayward, Mark R. Chun, Laird M. Close, Christ Ftaclas, Jared R. Males, Markus Hartung, I. Neill Reid, Evgenya Shkolnik, Andrew J. Skemer, Matthias Tecza, Niranjan A. Thatte, Fraser Clarke, Douglas Toomey

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

From 2008 December to 2012 September, the NICI (Near-Infrared Coronagraphic Imager at the Gemini-South 8.1-m) Planet-Finding Campaign (Liu et al. 2010) obtained deep, high-contrast AO imaging of a carefully selected sample of over 200 young, nearby stars. In the course of the campaign, we discovered four co-moving brown dwarf companions: PZ Tel B (36 +/- 16.4 1.0 AU), CD-35 2722B (31 +/- 8 67 +/- 4 AU), HD 1160B (33(9)(i2) 81 +/- AU), and HIP 79797Bb (55(19)(21) M-Jup, 3 AU from the previously known brown dwarf companion HIP 79797Ba), as well as numerous stellar binaries. Three survey papers have been published to date, covering: 1) high mass stars (Nielsen et al. 2013), 2) debris disk stars (Wahhaj et al. 2013), and 3) stars which are members of nearby young moving groups (Biller et al. 2013). In addition, the Campaign has yielded new orbital constraints for the similar to 8-10 Mi-up planet beta Pic b (Nielsen et al. 2014) and a high precision measurement of the star-disk offset for the well-known disk around HR 4796A (Wahhaj et al. 2014). Here we discuss constraints placed on the distribution of wide giant exoplanets from the NICI Campaign, new substellar companion discoveries, and characterization both of exoplanets and circumstellar disks.

Original languageEnglish
Title of host publicationADAPTIVE OPTICS SYSTEMS IV
EditorsE Marchetti, LM Close, JP Veran
Place of PublicationBELLINGHAM
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Number of pages15
DOIs
Publication statusPublished - 2014
EventConference on Adaptive Optics Systems IV - Montreal, Canada
Duration: 22 Jun 201427 Jun 2014

Publication series

NameProceedings of SPIE
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Volume9148
ISSN (Print)0277-786X

Conference

ConferenceConference on Adaptive Optics Systems IV
CountryCanada
Period22/06/1427/06/14

Keywords

  • exoplanets
  • adaptive optics
  • coronagraphy
  • circumstellar disks
  • L DWARF COMPANION
  • EXTRASOLAR PLANETS
  • GIANT PLANETS
  • CIRCUMSTELLAR DISK
  • BETA-PICTORIS
  • YOUNG STARS
  • HR 8799
  • DISCOVERY
  • FREQUENCY
  • MASS

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