The H II regions of the spiral galaxy M 101

Details The H II regions of the spiral galaxy M 101 The H II regions of the spiral galaxy M 101

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103..902s&link_type=abstract

(Rice University and University of Texas, Texas-Mexico Conference on Astrophysics: Plasmas in Astrophysics, 3rd, Rice University

Astronomy and Astrophysics

Astrophysics

2

Abundance, Astronomical Spectroscopy, Charge Coupled Devices, H Ii Regions, Spiral Galaxies, Oxygen, Signal To Noise Ratios, Stellar Luminosity

Scientific paper

Employment of a new identification and integration algorithm to CCD images of extragalactic H II regions has yielded new results for radial changes in spectrophotometric parameters. A change in the radial oxygen abundance, with an apparent discontinuity at a radius of 5.5 aremin, evidence is presented for an increase in the reddening of each region toward the center of the galaxy. A high-resolution overlay of the best radio data onto optical imagery is included.

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