2° · 1.7 kpc
Multi-band composite
- Data
- SHASSA H-alpha, beam 48″ (0.8' resolution, 48'' pixels) · Gaustad et al. 2001WISE 12 µm, beam 6.5″ · Wright et al. 2010Herschel SPIRE 250 µm, beam 18″ · Griffin et al. 2010WISE 3.4 µm, beam 6.1″ · Wright et al. 2010
- Stretch
- Per band: background removal, asinh stretch from a percentile black point, starlet sharpening, colour screen blend (scripts/composites.py).
- Scale
- LMC, width 12.1° at 49.59 ± 0.09 (stat) ± 0.54 (sys) kpc (Pietrzynski et al. 2019)
- Script
- scripts/composites.py composite(), scripts at e462b02-dirty
Composite with the Planck field
- Data
- SHASSA H-alpha, beam 48″ (0.8' resolution, 48'' pixels) · Gaustad et al. 2001WISE 12 µm, beam 6.5″ · Wright et al. 2010Herschel SPIRE 250 µm, beam 18″ · Griffin et al. 2010WISE 3.4 µm, beam 6.1″ · Wright et al. 2010Planck 353 GHz (PR4), beam 4.9′ (effective beam FWHM 4.94') · Planck Collaboration III 2020
- Stretch
- Per band: background removal, asinh stretch from a percentile black point, starlet sharpening, colour screen blend (scripts/composites.py).
- Smoothing
- Field texture: Q and U smoothed with a 10′ sigma Gaussian (FWHM 24′ with the Planck beam), then drawn as line integral convolution.
- Polarized S/N
- Above 3 over 89% of the field (median 12.4). Noise from the PR4 covariances, white between pixels; a lower bound.
- Scale
- LMC, width 12.1° at 49.59 ± 0.09 (stat) ± 0.54 (sys) kpc (Pietrzynski et al. 2019)
- Script
- scripts/composites.py composite(), scripts at e462b02-dirty
- Download
- lmc_field_angle.fits 1.2 MB · Field position angle, east of north (deg)lmc_field_snr.fits 1.2 MB · Polarized S/N at the field smoothingCredits and licence are in the FITS header.
