A Two-dimensional Spectroscopic Study of Emission-line Galaxies in the Faint Infrared Grism Survey (FIGS). I. Detection Method and Catalog - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles The Astrophysical Journal Year : 2018

A Two-dimensional Spectroscopic Study of Emission-line Galaxies in the Faint Infrared Grism Survey (FIGS). I. Detection Method and Catalog

Norbert Pirzkal
  • Function : Author
Barry Rothberg
  • Function : Author
Russell E. Ryan
  • Function : Author
Sangeeta Malhotra
  • Function : Author
James Rhoads
  • Function : Author
Norman Grogin
  • Function : Author
Emma Curtis-Lake
  • Function : Author
Jacopo Chevallard
Stéphane Charlot
Steven L. Finkelstein
  • Function : Author
Anton M. Koekemoer
  • Function : Author
Parviz Ghavamian
  • Function : Author
Mathieu Puech
Rebecca L. Larson
  • Function : Author
Andrea Cimatti
  • Function : Author
Ignacio Ferreras
Jonathan P. Gardner
  • Function : Author
Caryl Gronwall
  • Function : Author
Bhavin Joshi
  • Function : Author
Gerhardt R. Meurer
  • Function : Author
Robert W. O'Connell
  • Function : Author
Goeran Oestlin
  • Function : Author
Anna Pasquali
  • Function : Author
John Pharo
  • Function : Author
Amber N. Straughn
  • Function : Author
Jeremy R. Walsh
  • Function : Author
Rogier A. Windhorst
  • Function : Author
Nadia L. Zakamska
  • Function : Author
Russell Ryan
  • Function : Author
Steven Finkelstein
  • Function : Author
Anton Koekemoer
Rebecca Larson
  • Function : Author
Jonathan Gardner
  • Function : Author
Gerhardt Meurer
  • Function : Author
Robert O’connell
  • Function : Author
Amber Straughn
  • Function : Author
Jeremy Walsh
  • Function : Author
Rogier Windhorst
Nadia Zakamska
  • Function : Author

Abstract

We present the results from the application of a two-dimensional emission line detection method, EMission-line two-Dimensional (EM2D), to the near-infrared G102 grism observations obtained with the Wide-Field Camera 3 (WFC3) as part of the Cycle 22 Hubble Space Telescope Treasury Program: the Faint Infrared Grism Survey (FIGS). Using the EM2D method, we have assembled a catalog of emission line galaxies (ELGs) with resolved star formation from each of the four FIGS fields. Not only can one better assess the global properties of ELGs, but the EM2D method allows for the analysis and improved study of the individual emission-line region within each galaxy. This paper includes a description of the methodology, advantages, and the first results of the EM2D method applied to ELGs in FIGS. The advantage of 2D emission line measurements includes significant improvement of galaxy redshift measurements, approaching the level of accuracy seen in high-spectral-resolution data, but with greater efficiency; and the ability to identify and measure the properties of multiple sites of star formation and over scales of ˜1 kpc within individual galaxies out to z ˜ 4. The EM2D method also significantly improves the reliability of high-redshift (z ˜ 7) Lyα detections. Coupled with the wide field of view and high efficiency of space-based grism observations, EM2D provides a noteworthy improvement on the physical parameters that can be extracted from grism observations.

Dates and versions

hal-02280802 , version 1 (06-09-2019)

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Cite

Norbert Pirzkal, Barry Rothberg, Russell E. Ryan, Sangeeta Malhotra, James Rhoads, et al.. A Two-dimensional Spectroscopic Study of Emission-line Galaxies in the Faint Infrared Grism Survey (FIGS). I. Detection Method and Catalog. The Astrophysical Journal, 2018, 868 (1), pp.61. ⟨10.3847/1538-4357/aae585⟩. ⟨hal-02280802⟩
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