FIGS - Faint Infrared Grism Survey: Description and Data Reduction

Norbert Pirzkal, Sangeeta Malhotra, Russell E. Ryan, Barry Rothberg, Norman Grogin, Steven L. Finkelstein, Anton M. Koekemoer, James Rhoads, Rebecca L. Larson, Lise Christensen, Andrea Cimatti, Ignacio Ferreras, Jonathan P. Gardner, Caryl Ann Gronwall, Nimish P. Hathi, Pascale Hibon, Bhavin Joshi, Harald Kuntschner, Gerhardt R. Meurer, Robert W. O'ConnellGoeran Oestlin, Anna Pasquali, John Pharo, Amber N. Straughn, Jeremy R. Walsh, Darach Watson, Rogier A. Windhorst, Nadia L. Zakamska, Andrew Zirm

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The Faint Infrared Grism Survey (FIGS) is a deep Hubble Space Telescope (HST) WFC3/IR (Wide Field Camera 3 Infrared) slitless spectroscopic survey of four deep fields. Two fields are located in the Great Observatories Origins Deep Survey-North (GOODS-N) area and two fields are located in the Great Observatories Origins Deep Survey-South (GOODS-S) area. One of the southern fields selected is the Hubble Ultra Deep Field. Each of these four fields were observed using the WFC3/G102 grism (0.8 μm-1.15 μm continuous coverage) with a total exposure time of 40 orbits (≈100 kilo-seconds)er field. This reaches a 3σ continuum depth of 26 ≈ AB magnitudes and probes emission lines to ∼ 10-17 erg s-1 cm-2. This paper details the four FIGS fields and the overall observational strategy of the project. A detailed description of the Simulation Based Extraction (SBE) method used to extract and combine over 10,000 spectra of over 2000 distinct sources brighter than mF105W = 26.5 mag is provided. High fidelity simulations of the observations is shown to significantly improve the background subtraction process, the spectral contamination estimates, and the final flux calibration. This allows for the combination of multiple spectra to produce a final high quality, deep, 1D spectra for each object in the survey.

Original languageEnglish (US)
Article number84
JournalAstrophysical Journal
Volume846
Issue number1
DOIs
StatePublished - Sep 1 2017

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data reduction
observatory
observatories
extraction method
erg
field survey
simulation
Hubble Space Telescope
subtraction
probe
contamination
calibration
cameras
continuums
orbits
probes
estimates

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Pirzkal, N., Malhotra, S., Ryan, R. E., Rothberg, B., Grogin, N., Finkelstein, S. L., ... Zirm, A. (2017). FIGS - Faint Infrared Grism Survey: Description and Data Reduction. Astrophysical Journal, 846(1), [84]. https://doi.org/10.3847/1538-4357/aa81cc
Pirzkal, Norbert ; Malhotra, Sangeeta ; Ryan, Russell E. ; Rothberg, Barry ; Grogin, Norman ; Finkelstein, Steven L. ; Koekemoer, Anton M. ; Rhoads, James ; Larson, Rebecca L. ; Christensen, Lise ; Cimatti, Andrea ; Ferreras, Ignacio ; Gardner, Jonathan P. ; Gronwall, Caryl Ann ; Hathi, Nimish P. ; Hibon, Pascale ; Joshi, Bhavin ; Kuntschner, Harald ; Meurer, Gerhardt R. ; O'Connell, Robert W. ; Oestlin, Goeran ; Pasquali, Anna ; Pharo, John ; Straughn, Amber N. ; Walsh, Jeremy R. ; Watson, Darach ; Windhorst, Rogier A. ; Zakamska, Nadia L. ; Zirm, Andrew. / FIGS - Faint Infrared Grism Survey : Description and Data Reduction. In: Astrophysical Journal. 2017 ; Vol. 846, No. 1.
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abstract = "The Faint Infrared Grism Survey (FIGS) is a deep Hubble Space Telescope (HST) WFC3/IR (Wide Field Camera 3 Infrared) slitless spectroscopic survey of four deep fields. Two fields are located in the Great Observatories Origins Deep Survey-North (GOODS-N) area and two fields are located in the Great Observatories Origins Deep Survey-South (GOODS-S) area. One of the southern fields selected is the Hubble Ultra Deep Field. Each of these four fields were observed using the WFC3/G102 grism (0.8 μm-1.15 μm continuous coverage) with a total exposure time of 40 orbits (≈100 kilo-seconds)er field. This reaches a 3σ continuum depth of 26 ≈ AB magnitudes and probes emission lines to ∼ 10-17 erg s-1 cm-2. This paper details the four FIGS fields and the overall observational strategy of the project. A detailed description of the Simulation Based Extraction (SBE) method used to extract and combine over 10,000 spectra of over 2000 distinct sources brighter than mF105W = 26.5 mag is provided. High fidelity simulations of the observations is shown to significantly improve the background subtraction process, the spectral contamination estimates, and the final flux calibration. This allows for the combination of multiple spectra to produce a final high quality, deep, 1D spectra for each object in the survey.",
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Pirzkal, N, Malhotra, S, Ryan, RE, Rothberg, B, Grogin, N, Finkelstein, SL, Koekemoer, AM, Rhoads, J, Larson, RL, Christensen, L, Cimatti, A, Ferreras, I, Gardner, JP, Gronwall, CA, Hathi, NP, Hibon, P, Joshi, B, Kuntschner, H, Meurer, GR, O'Connell, RW, Oestlin, G, Pasquali, A, Pharo, J, Straughn, AN, Walsh, JR, Watson, D, Windhorst, RA, Zakamska, NL & Zirm, A 2017, 'FIGS - Faint Infrared Grism Survey: Description and Data Reduction', Astrophysical Journal, vol. 846, no. 1, 84. https://doi.org/10.3847/1538-4357/aa81cc

FIGS - Faint Infrared Grism Survey : Description and Data Reduction. / Pirzkal, Norbert; Malhotra, Sangeeta; Ryan, Russell E.; Rothberg, Barry; Grogin, Norman; Finkelstein, Steven L.; Koekemoer, Anton M.; Rhoads, James; Larson, Rebecca L.; Christensen, Lise; Cimatti, Andrea; Ferreras, Ignacio; Gardner, Jonathan P.; Gronwall, Caryl Ann; Hathi, Nimish P.; Hibon, Pascale; Joshi, Bhavin; Kuntschner, Harald; Meurer, Gerhardt R.; O'Connell, Robert W.; Oestlin, Goeran; Pasquali, Anna; Pharo, John; Straughn, Amber N.; Walsh, Jeremy R.; Watson, Darach; Windhorst, Rogier A.; Zakamska, Nadia L.; Zirm, Andrew.

In: Astrophysical Journal, Vol. 846, No. 1, 84, 01.09.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - FIGS - Faint Infrared Grism Survey

T2 - Description and Data Reduction

AU - Pirzkal, Norbert

AU - Malhotra, Sangeeta

AU - Ryan, Russell E.

AU - Rothberg, Barry

AU - Grogin, Norman

AU - Finkelstein, Steven L.

AU - Koekemoer, Anton M.

AU - Rhoads, James

AU - Larson, Rebecca L.

AU - Christensen, Lise

AU - Cimatti, Andrea

AU - Ferreras, Ignacio

AU - Gardner, Jonathan P.

AU - Gronwall, Caryl Ann

AU - Hathi, Nimish P.

AU - Hibon, Pascale

AU - Joshi, Bhavin

AU - Kuntschner, Harald

AU - Meurer, Gerhardt R.

AU - O'Connell, Robert W.

AU - Oestlin, Goeran

AU - Pasquali, Anna

AU - Pharo, John

AU - Straughn, Amber N.

AU - Walsh, Jeremy R.

AU - Watson, Darach

AU - Windhorst, Rogier A.

AU - Zakamska, Nadia L.

AU - Zirm, Andrew

PY - 2017/9/1

Y1 - 2017/9/1

N2 - The Faint Infrared Grism Survey (FIGS) is a deep Hubble Space Telescope (HST) WFC3/IR (Wide Field Camera 3 Infrared) slitless spectroscopic survey of four deep fields. Two fields are located in the Great Observatories Origins Deep Survey-North (GOODS-N) area and two fields are located in the Great Observatories Origins Deep Survey-South (GOODS-S) area. One of the southern fields selected is the Hubble Ultra Deep Field. Each of these four fields were observed using the WFC3/G102 grism (0.8 μm-1.15 μm continuous coverage) with a total exposure time of 40 orbits (≈100 kilo-seconds)er field. This reaches a 3σ continuum depth of 26 ≈ AB magnitudes and probes emission lines to ∼ 10-17 erg s-1 cm-2. This paper details the four FIGS fields and the overall observational strategy of the project. A detailed description of the Simulation Based Extraction (SBE) method used to extract and combine over 10,000 spectra of over 2000 distinct sources brighter than mF105W = 26.5 mag is provided. High fidelity simulations of the observations is shown to significantly improve the background subtraction process, the spectral contamination estimates, and the final flux calibration. This allows for the combination of multiple spectra to produce a final high quality, deep, 1D spectra for each object in the survey.

AB - The Faint Infrared Grism Survey (FIGS) is a deep Hubble Space Telescope (HST) WFC3/IR (Wide Field Camera 3 Infrared) slitless spectroscopic survey of four deep fields. Two fields are located in the Great Observatories Origins Deep Survey-North (GOODS-N) area and two fields are located in the Great Observatories Origins Deep Survey-South (GOODS-S) area. One of the southern fields selected is the Hubble Ultra Deep Field. Each of these four fields were observed using the WFC3/G102 grism (0.8 μm-1.15 μm continuous coverage) with a total exposure time of 40 orbits (≈100 kilo-seconds)er field. This reaches a 3σ continuum depth of 26 ≈ AB magnitudes and probes emission lines to ∼ 10-17 erg s-1 cm-2. This paper details the four FIGS fields and the overall observational strategy of the project. A detailed description of the Simulation Based Extraction (SBE) method used to extract and combine over 10,000 spectra of over 2000 distinct sources brighter than mF105W = 26.5 mag is provided. High fidelity simulations of the observations is shown to significantly improve the background subtraction process, the spectral contamination estimates, and the final flux calibration. This allows for the combination of multiple spectra to produce a final high quality, deep, 1D spectra for each object in the survey.

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Pirzkal N, Malhotra S, Ryan RE, Rothberg B, Grogin N, Finkelstein SL et al. FIGS - Faint Infrared Grism Survey: Description and Data Reduction. Astrophysical Journal. 2017 Sep 1;846(1). 84. https://doi.org/10.3847/1538-4357/aa81cc