J/A+A/696/A57 MIRI Deep Imaging Survey of the HUDF (Ostlin+, 2025)
MIRI Deep Imaging Survey (MIDIS) of the Hubble Ultra Deep Field.
Survey description and early results for the galaxy population detected
at 5.6 µm.
Ostlin G., Perez-Gonzalez P.G., Melinder J., Gillman S., Iani E.,
Costantin L., Boogaard L.A., Rinaldi P., Colina L., Norgaard-Nielsen H.U.,
Dicken D., Greve T.R., Wright G., Alonso-Herrero A., Alvarez-Marquez J.,
Annunziatella M., Bik A., Bosman S.E.I., Caputi K.I., Crespo Gomez A.,
Eckart A., Garcia-Marin M., Hjorth J., Ilbert O., Jermann I., Kendrew S.,
Labiano A., Langeroodi D., Le Fevre O., Libralato M., Meyer R.A.,
Moutard T., Peissker F., Pye J.P., Tikkanen T.V., Topinka M., Walter F.,
Ward M., van der Werf P., van Dishoeck E.F., Guedel M., Henning T.,
Lagage P.-O., Ray T.P., Vandenbussche B.
<Astron. Astrophys. 696, A57 (2025)>
=2025A&A...696A..57O 2025A&A...696A..57O (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, IR ; Galaxies, photometry ; Galaxy catalogs ;
Redshifts ; Surveys
Keywords: galaxies: evolution - galaxies: formation - galaxies: high-redshift -
infrared: galaxies
Abstract:
The recently launched James Webb Space Telescope (JWST) is opening new
observing windows on the distant universe. Among JWST's instruments,
the Mid Infrared Instrument (MIRI) offers the unique capability of
imaging observations at wavelengths >5um. This enables unique access
to the rest frame near infra-red (NIR, λ>1um) emission from
galaxies at redshifts z>4 and the visual (λ>5000Å) rest
frame for z>9. We here report on the guaranteed time observations
(GTO) from the MIRI European Consortium, of the Hubble Ultra Deep
Field (HUDF), forming the MIRI Deep Imaging Survey (MIDIS), consisting
of an on source integration time of ∼41 hours in the MIRI/F560W
(5.6um) filter. The F560W filter was selected since it would produce
the deepest data in terms of AB magnitudes in a given time. To our
knowledge, this constitutes the longest single filter exposure
obtained with JWST of an extragalactic field as yet. The HUDF is one
of the most observed extragalactic fields, with extensive
multi-wavelength coverage, where (before JWST) galaxies up to z∼7 have
been confirmed, and at z>10 suggested, from HST photometry. We aim to
characterise the galaxy population in HUDF at 5.6um, enabling studies
such as: the rest frame NIR morphologies for galaxies at z<4.6,
probing mature stellar populations and emission lines in z>6 sources,
intrinsically red and dusty galaxies, and active galactic nuclei (AGN)
and their host galaxies at intermediate redshifts. We have reduced the
MIRI data using the official JWST pipeline, augmented by in-house
custom scripts. We measure the noise characteristics of the resulting
image. Galaxy photometry has been obtained, and photometric redshifts
have been estimated for sources with available multi wavelength
photometry (and compared to spectroscopic redshifts when available).
Over the deepest part of our image the 5 sigma point source limit is
28.65mag AB (12.6nJy), ∼0.35mag better than predicted by the JWST
exposure time calculator. We find ∼2500 sources, the overwhelming
majority of which are distant galaxies, but note that spurious sources
likely remain at faint magnitudes due to imperfect cosmic ray
rejection in the JWST pipeline. More than 500 galaxies with available
spectroscopic redshifts, up to z∼11 have been identified, the majority
of which are at z<6. More than 1000 galaxies have reliable photometric
redshift estimates, of which ∼25 are at 6<z<12. The point spread
function in the F560W filter has a FWHM of ∼0.2 arcsec (corresponding
to 1.4kpc at z=4), allowing the near infrared rest frame morphologies
and stellar mass distributions to be resolved for z<4.5. Moreover,
>100 objects with very red Near Infrared Camera (NIRCam) vs MIRI
(3.6-5.6um>1mag) colours have been found, indicating dusty or old
stellar populations at high redshifts. We conclude that MIDIS
surpasses preflight expectations and that deep MIRI imaging has great
potential for characterizing the galaxy population from cosmic noon to
dawn.
Description:
Contains coordinates, basic morphological measurements, redshift
information, and photometry of 2401 galaxies detected in JWST/MIRI
F560W images of the Hubble Ultra Deep Field. Aperture magnitudes are
aperture corrected to infinite aperture size assuming a point source
shape and using JWST/MIRI calibration files. Fluxes are given in units
of nano-Janskys and magnitudes in the AB magnitude system.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 591 2401 Galaxies detected in JWST/MIRI F560W images of
the Hubble Ultra Deep Field
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Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 24 A24 --- MIDIS MIDIS identifier, MIDISHHMMSS.ss+DDMMSS.ss
(MIDIS_ID)
26- 36 A11 --- JADES JADES identifier,, JADESNNNNNN (JADES_ID)
38- 55 F18.15 deg RAdeg Right ascension (J2000) (RA)
57- 75 F19.15 deg DEdeg Declination (J2000) (DEC)
77- 95 F19.16 arcsec a Semi-major axis (a)
97-116 F20.17 arcsec b Semi-minor axis (b)
118-138 F21.17 deg theta Position angle (THETA)
140-158 F19.17 --- e Eccentricity (e)
160-180 F21.18 --- zph ?=-1 Photometric redshift (Z_PHOT)
182-203 F22.19 --- e_zph ?=-1 Photometric redshift error (ZPHOTERR)
205-226 E22.14 --- zsp ?=-1 Spectroscopic redshifts (Z_SPEC)
228-231 A4 --- r_zsp Reference for zsp (ZSPECREF)
233-256 F24.18 nJy Fap560W F560W APER flux (FLUXAPERF560W)
258-276 F19.16 nJy e_Fap560W F560W APER flux error (FLUXERRAPERF560W)
278-301 F24.18 nJy FKr560W F560W KRON flux (FLUXKRONF560W)
303-322 F20.16 nJy e_FKr560W F560W KRON flux error (FLUXERRKRONF560W)
324-342 F19.15 mag Fap560Wmag ?=-99 F560W APER magnitude (AB)
(MAGAPERF560W)
344-367 E24.16 mag e_Fap560Wmag ?=-99 F560W APER magnitude error (AB)
(MAGERRAPERF560W)
369-387 F19.15 mag Fkr560Wmag ?=-99 F560W KRON magnitude (MAGKRONF560W)
389-412 E24.16 mag e_Fkr560Wmag ?=-99 F560W KRON magnitude error
(MAGERRKRONF560W)
414-435 F22.16 nJy FfaF560W ?=-99 F560W FARMER flux (FLUXFARMERF560W)
437-456 F20.16 nJy e_FfaF560W ?=-99 F560W FARMER flux error
(FLUXERRFARMERF560W)
458-476 F19.15 mag Ffa560Wmag ?=-99 F560W FARMER magnitude (AB)
(MAGFARMERF560W)
478-501 E24.16 mag e_Ffa560Wmag ?=-99 F560W FARMER magnitude error (AB)
(MAGERRFARMERF560W)
503-526 E24.15 nJy Fap356W F356W APER flux (FLUXAPERF356W)
527-546 F20.17 nJy e_Fap356W F356W APER flux error (FLUXERRAPERF356W)
548-566 F19.15 mag Fap356Wmag ?=-99 F356W APER magnitude (AB)
(MAGAPERF356W)
568-591 E24.16 mag e_Fap356Wmag ?=-99 F356W APER magnitude error (AB)
(MAGERRAPERF356W)
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Acknowledgements:
Goran Ostlin, ostlin(at)astro.su.se
Jens Melinder, jens(at)astro.su.se
(End) Patricia Vannier [CDS] 26-Feb-2025