WFC3 Infrared Spectroscopic Parallel (WISP) survey: photometric and emission-line data release

A. J. Battisti, M. B. Bagley, M. Rafelski, I. Baronchelli, Y. S. Dai, A. L. Henry, H. Atek, J. Colbert, M. A. Malkan, P. J. McCarthy, C. Scarlata, B. Siana, H. I. Teplitz, A. Alavi, K. Boyett, A. J. Bunker, J. P. Gardner, N. P. Hathi, D. Masters, V. MehtaM. Rutkowski, K. Shahinyan, B. Sunnquist, X. Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We present reduced images and catalogues of photometric and emission-line data ( ∼230 000 and ∼8000 sources, respectively) for the WFC3 (Wide Field Camera 3) Infrared Spectroscopic Parallel (WISP) survey. These data are made publicly available on the Mikulski Archive for Space Telescopes and include reduced images from various facilities: ground-based ugri , Hubble Space Telescope ( HST ) WFC3, and Spitzer IRAC (Infrared Array Camera). Co v erage in at least one additional filter beyond the WFC3/IR data are available for roughly half of the fields (227 out of 483), with ∼20 per cent (86) having co v erage in six or more filters from u band to IRAC 3.6 μm (0.35-3.6 μm). For the lower spatial resolution (and shallower) ground-based and IRAC data, we perform PSF (point spread function)-matched, prior-based, deconfusion photometry (i.e. forced-photometry) using the TPHOT software to optimally extract measurements or upper limits. We present the methodology and software used for the WISP emission-line detection and visual inspection. The former adopts a continuous wavelet transformation that significantly reduces the number of spurious sources as candidates before the visual inspection stage. We combine both WISP catalogues and perform spectral energy distribution fitting on galaxies with reliable spectroscopic redshifts and multiband photometry to measure their stellar masses. We stack WISP spectra as functions of stellar mass and redshift and measure average emission-line fluxes and ratios. We find that WISP emission-line sources are typically 'normal' star-forming galaxies based on the mass-excitation diagram ([O III ]/H βversus M⊙ ; 0.74 < z grism < 2.31), the galaxy main sequence (SFR versus M⊙ ; 0.30 < z grism < 1.45), S 32 ratio versus M⊙ (0.30 < z grism < 0.73), and O 32 and R 23 ratios versus M⊙ (1.27 < z grism < 1.45).

Original languageEnglish (US)
Pages (from-to)894-928
Number of pages35
JournalMonthly Notices of the Royal Astronomical Society
Volume530
Issue number1
DOIs
StatePublished - May 1 2024

Bibliographical note

Publisher Copyright:
© 2024 The Author(s).

Keywords

  • ISM: evolution
  • catalogues
  • galaxies: evolution
  • galaxies: general
  • galaxies: photometry
  • surv e ys

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