High-resolution imaging of Virgo cluster galaxies. II - Detection of the brightest stars in NGC 4523

Details High-resolution imaging of Virgo cluster galaxies. II - Detection of the brightest stars in NGC 4523 High-resolution imaging of Virgo cluster galaxies. II - Detection of the brightest stars in NGC 4523

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.256p..29s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 256, no. 2, May 15, 1992, p. 29P-32P.

Astronomy and Astrophysics

Astronomy

16

Red Shift, Stellar Luminosity, Supergiant Stars, Virgo Galactic Cluster, Charge Coupled Devices, Distance, High Resolution, Imaging Techniques

Scientific paper

High-resolution CCD observations of the Virgo spiral NGC 4523 are reported. In 0.6-arcsec seeing, candidates for the brightest blue and yellow supergiants with magnitudes in the range 20-21.5 were detected. On the assumption that the yellow supergiants are standard candles with 9.6 mag, the implied distance modulus for NGC 4523 is 30.6 +/-0.3 mag or 11-15 Mpc. The important implications for the Virgo distance and the Hubble constant of this low distance to NGC 4523 are confirmed.

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