Optically selected superthin galaxies remain superthin in NIR with unchanged axis ratios, showing no prominent thick disk from old stars, and prefer lower-density environments consistent with high-halo-spin formation.
The u'g'r'i'z' Standard Star Network
2 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We present the 158 standard stars that define the u'g'r'i'z' photometric system. These stars form the basis for the photometric calibration of the Sloan Digital Sky Survey (SDSS). The defining instrument system and filters, the observing process, the reduction techniques, and the software used to create the stellar network are all described. We briefly discuss the history of the star selection process, the derivation of a set of transformation equations for the UBVRcIc system, and plans for future work.
years
2026 2verdicts
CONDITIONAL 2representative citing papers
Revised SDSS ugriz zero-points obtained by inverting IRFM on 6000+ FGK stars to match an adopted temperature scale, with largest offset in u band depending on filter curves.
citing papers explorer
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Optically Selected Superthin Galaxies Remain Thin in the Near-infrared
Optically selected superthin galaxies remain superthin in NIR with unchanged axis ratios, showing no prominent thick disk from old stars, and prefer lower-density environments consistent with high-halo-spin formation.