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Barred galaxies · evidence and sources

NGC 1512

Webb reveals a bright nuclear ring and intricate dusty structure within a barred spiral.

Also known as NGC 1512 barred spiral.

Catalog Position basis, the same label the app shows on the selection card.

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Every aspect, with its origin

One record per aspect. The origin says what kind of thing each value is; the source says where it came from; the limit says what it cannot tell you.

ObservedCatalogComputedReconstructedIllustrativeUndocumented
Position Catalog

Registered image field

J2000 image-field center RA 4.1 h, Dec -43.3°. Field 3.6 × 2.2 arcminutes; north -18.4° right of vertical.

SourceWebb NIRCam and MIRI
EpochJ2000
LimitThe image field center is not necessarily a galaxy nucleus.
Physical data Catalog

Adopted distance

Approximately 30,000,000 light-years.

SourcePublished distance context
LimitAn approximate reference distance; distances to individual points within the image are not supplied by the observation.
Appearance Reconstructed

Observation-derived appearance

This PHANGS-Webb infrared field shows the bar and inner ring; the galaxy’s much larger outer arms extend beyond it. Colors encode infrared bands, not naked-eye appearance. Projected structure follows the credited observation at its published angular scale and an approximate adopted distance. Shallow depth is illustrative, not measured tomography. The source palette is preserved; brightness is adjusted for the navigable view.

SourceNASA, ESA, CSA, STScI, J. Lee (STScI), T. Williams (Oxford), PHANGS Team
Appearance Reconstructed

Live telescope view: Hubble WFPC2 · UV / visible

The central ring and bar appear through ultraviolet and visible filters, contrasting with Webb’s bright infrared dust. Publisher release: 31 May 2001; this is not the observing epoch.

SourceNASA , ESA , Dan Maoz (Tel-Aviv University, Israel, and Columbia University, USA)
MethodPublisher AVM tangent-plane coordinates, resampled to the original destination field; approximate display registration.
LimitThis observation covers approximately 68% of the destination’s rectangular source field. Outside its footprint, the original observation remains visible. Field edges and detector gaps are not physical boundaries. Source palettes are display colors; shallow scene depth is illustrative, not measured tomography.

What is not measured

  • Appearance: a reconstruction from measurements, not a direct observation. Observation-derived appearance. This PHANGS-Webb infrared field shows the bar and inner ring; the galaxy’s much larger outer arms extend beyond it. Colors encode infrared bands, not naked-eye appearance. Projected structure follows the credited observation at its published angular scale and an approximate adopted distance. Shallow depth is illustrative, not measured tomography. The source palette is preserved; brightness is adjusted for the navigable view.
  • Appearance: a reconstruction from measurements, not a direct observation. Live telescope view: Hubble WFPC2 · UV / visible. This observation covers approximately 68% of the destination’s rectangular source field. Outside its footprint, the original observation remains visible. Field edges and detector gaps are not physical boundaries. Source palettes are display colors; shallow scene depth is illustrative, not measured tomography.

Sources cited

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