Southern Galaxies. III. Isophotometry of the Large Barred Spiral NGC 1313.

Abstract

view Abstract Citations (69) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Southern Galaxies. III. Isophotometry of the Large Barred Spiral NGC 1313. de Vaucouleurs, Gerard Abstract Isophotes and photometric parameters of the SB(s)d spiral NGC 1313 are derived from photographs taken with the Mount Stromlo 30- and 74-inch reflectors. The total apparent photographic magnitude = 9.74 (with provisional zero point) and maximum dimensions 14' ?( 10' (at the threshold p = 27.3mag = 0.95 C/pc2) correspond to MT = -18.7 and Dm = 18.3 kpc, if m - M = 28.55 and A = 4.5 Mpc. The major axis is in position angle 0 40" at j# 25 mag , and 0 15" at p 27 mag (including a peculiar appendage 6' X 5' at 6 1 in p.a. 185"); the mean axis ratio of the outer regions q = (b/a = 0.80 corresponds to an incllnation i = 39". The equivalent effective radius is - 1 `44 - 1.9 kpc, the effective surface brightness = 22.32 mag = 91 0/pc2, and the mean luminosity gradient of the exponential component contributing 70 per cent of the total luminosity is G(a) = -0.36 = -0.275 . The radial velocity of the brightest H ii region is V = +254 + 10 (p.e.) km . Publication: The Astrophysical Journal Pub Date: April 1963 DOI: 10.1086/147550 Bibcode: 1963ApJ...137..720D full text sources ADS | data products NED (1) Related Materials (7) Part 1: 1961ApJ...133..405D Part 2: 1962ApJ...136..107D Part 4: 1963ApJ...138..934D Part 5: 1964ApJ...139..899D Part 6: 1964ApJ...140..399D Part 7: 1973ApJ...181...31D Part 8: 1975ApJS...29..193D