The james webb space telescope north ecliptic pole time-domain field. I. Field selection of a JWST community field for time-domain studies

Rolf A. Jansen, Rogier Windhorst

Research output: Contribution to journalArticle

Abstract

We describe the selection of the James Webb Space Telescope (JWST) North Ecliptic Pole (NEP) Time-domain Field (TDF), a ≳14′ diameter field located within JWST’s northern continuous viewing zone (CVZ) and centered at (R.A., decl.)J2000=(17:22:47.896, +65:49:21.54). We demonstrate that this is the only region in the sky where JWST can observe a clean (i.e., free of bright foreground stars and with low Galactic foreground extinction) extragalactic deep survey field of this size at arbitrary cadence or at arbitrary orientation, and without a penalty in terms of a raised zodiacal background. This will crucially enable a wide range of new and exciting time-domain science, including high-redshift transient searches and monitoring (e.g., SNe), variability studies from active galactic nuclei (AGNs) to brown dwarf atmospheres, as well as proper motions of possibly extreme scattered Kuiper Belt and Inner Oort Cloud Objects, and of nearby Galactic brown dwarfs, low-mass stars, and ultracool white dwarfs. A JWST/NIRCam+NIRISS GTO program will provide an initial 0.8–5.0 μm spectrophotometric characterization to mAB ∼ 28.8±0.3 mag of four orthogonal “spokes” within this field. The multi-wavelength (radio through X-ray) context of the field is in hand (ground-based near–UV-visible–near-IR), in progress (VLA 3 GHz, VLBA 5 GHz, HST UV-visible, Chandra X-ray, and IRAM 30 m 1.3 and 2 mm), or scheduled (JCMT 850 μm). We welcome and encourage ground-and space-based follow-up of the initial GTO observations and ancillary data, to realize its potential as an ideal JWST time-domain community field.

Original languageEnglish (US)
Article number124001
JournalPublications of the Astronomical Society of the Pacific
Volume130
Issue number994
DOIs
StatePublished - Jan 1 2018

Fingerprint

James Webb Space Telescope
ecliptic
poles
Oort cloud
spokes
Kuiper belt
stars
proper motion
penalties
active galactic nuclei
field survey
sky
extinction
x rays
radio
wavelength
atmospheres
atmosphere
monitoring
wavelengths

Keywords

  • (cosmology:) dark ages
  • (stars:) supernovae: general
  • First stars
  • Galaxies: active
  • Galaxies: evolution
  • Galaxies: high-redshift
  • Reionization
  • Surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

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title = "The james webb space telescope north ecliptic pole time-domain field. I. Field selection of a JWST community field for time-domain studies",
abstract = "We describe the selection of the James Webb Space Telescope (JWST) North Ecliptic Pole (NEP) Time-domain Field (TDF), a ≳14′ diameter field located within JWST’s northern continuous viewing zone (CVZ) and centered at (R.A., decl.)J2000=(17:22:47.896, +65:49:21.54). We demonstrate that this is the only region in the sky where JWST can observe a clean (i.e., free of bright foreground stars and with low Galactic foreground extinction) extragalactic deep survey field of this size at arbitrary cadence or at arbitrary orientation, and without a penalty in terms of a raised zodiacal background. This will crucially enable a wide range of new and exciting time-domain science, including high-redshift transient searches and monitoring (e.g., SNe), variability studies from active galactic nuclei (AGNs) to brown dwarf atmospheres, as well as proper motions of possibly extreme scattered Kuiper Belt and Inner Oort Cloud Objects, and of nearby Galactic brown dwarfs, low-mass stars, and ultracool white dwarfs. A JWST/NIRCam+NIRISS GTO program will provide an initial 0.8–5.0 μm spectrophotometric characterization to mAB ∼ 28.8±0.3 mag of four orthogonal “spokes” within this field. The multi-wavelength (radio through X-ray) context of the field is in hand (ground-based near–UV-visible–near-IR), in progress (VLA 3 GHz, VLBA 5 GHz, HST UV-visible, Chandra X-ray, and IRAM 30 m 1.3 and 2 mm), or scheduled (JCMT 850 μm). We welcome and encourage ground-and space-based follow-up of the initial GTO observations and ancillary data, to realize its potential as an ideal JWST time-domain community field.",
keywords = "(cosmology:) dark ages, (stars:) supernovae: general, First stars, Galaxies: active, Galaxies: evolution, Galaxies: high-redshift, Reionization, Surveys",
author = "Jansen, {Rolf A.} and Rogier Windhorst",
year = "2018",
month = "1",
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doi = "10.1088/1538-3873/aae476",
language = "English (US)",
volume = "130",
journal = "Publications of the Astronomical Society of the Pacific",
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T1 - The james webb space telescope north ecliptic pole time-domain field. I. Field selection of a JWST community field for time-domain studies

AU - Jansen, Rolf A.

AU - Windhorst, Rogier

PY - 2018/1/1

Y1 - 2018/1/1

N2 - We describe the selection of the James Webb Space Telescope (JWST) North Ecliptic Pole (NEP) Time-domain Field (TDF), a ≳14′ diameter field located within JWST’s northern continuous viewing zone (CVZ) and centered at (R.A., decl.)J2000=(17:22:47.896, +65:49:21.54). We demonstrate that this is the only region in the sky where JWST can observe a clean (i.e., free of bright foreground stars and with low Galactic foreground extinction) extragalactic deep survey field of this size at arbitrary cadence or at arbitrary orientation, and without a penalty in terms of a raised zodiacal background. This will crucially enable a wide range of new and exciting time-domain science, including high-redshift transient searches and monitoring (e.g., SNe), variability studies from active galactic nuclei (AGNs) to brown dwarf atmospheres, as well as proper motions of possibly extreme scattered Kuiper Belt and Inner Oort Cloud Objects, and of nearby Galactic brown dwarfs, low-mass stars, and ultracool white dwarfs. A JWST/NIRCam+NIRISS GTO program will provide an initial 0.8–5.0 μm spectrophotometric characterization to mAB ∼ 28.8±0.3 mag of four orthogonal “spokes” within this field. The multi-wavelength (radio through X-ray) context of the field is in hand (ground-based near–UV-visible–near-IR), in progress (VLA 3 GHz, VLBA 5 GHz, HST UV-visible, Chandra X-ray, and IRAM 30 m 1.3 and 2 mm), or scheduled (JCMT 850 μm). We welcome and encourage ground-and space-based follow-up of the initial GTO observations and ancillary data, to realize its potential as an ideal JWST time-domain community field.

AB - We describe the selection of the James Webb Space Telescope (JWST) North Ecliptic Pole (NEP) Time-domain Field (TDF), a ≳14′ diameter field located within JWST’s northern continuous viewing zone (CVZ) and centered at (R.A., decl.)J2000=(17:22:47.896, +65:49:21.54). We demonstrate that this is the only region in the sky where JWST can observe a clean (i.e., free of bright foreground stars and with low Galactic foreground extinction) extragalactic deep survey field of this size at arbitrary cadence or at arbitrary orientation, and without a penalty in terms of a raised zodiacal background. This will crucially enable a wide range of new and exciting time-domain science, including high-redshift transient searches and monitoring (e.g., SNe), variability studies from active galactic nuclei (AGNs) to brown dwarf atmospheres, as well as proper motions of possibly extreme scattered Kuiper Belt and Inner Oort Cloud Objects, and of nearby Galactic brown dwarfs, low-mass stars, and ultracool white dwarfs. A JWST/NIRCam+NIRISS GTO program will provide an initial 0.8–5.0 μm spectrophotometric characterization to mAB ∼ 28.8±0.3 mag of four orthogonal “spokes” within this field. The multi-wavelength (radio through X-ray) context of the field is in hand (ground-based near–UV-visible–near-IR), in progress (VLA 3 GHz, VLBA 5 GHz, HST UV-visible, Chandra X-ray, and IRAM 30 m 1.3 and 2 mm), or scheduled (JCMT 850 μm). We welcome and encourage ground-and space-based follow-up of the initial GTO observations and ancillary data, to realize its potential as an ideal JWST time-domain community field.

KW - (cosmology:) dark ages

KW - (stars:) supernovae: general

KW - First stars

KW - Galaxies: active

KW - Galaxies: evolution

KW - Galaxies: high-redshift

KW - Reionization

KW - Surveys

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