Abstract
view Abstract Citations (165) References (41) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Planetary Nebula System and Dynamics of NGC 5128. I. Planetary Nebulae as Standard Candles Hui, Xiaohui ; Ford, Holland C. ; Ciardullo, Robin ; Jacoby, George H. Abstract We present the result of a planetary nebula (PN) survey of the nearby giant elliptical galaxy NGC 5128 performed with CCD cameras at the prime focus of the CTIO 4 m telescope. By comparing CCD images centered on the characteristic emission line [O III] λ5007 and on the adjacent continuum, we identify a total of 785 PNs in areas extending 20 kpc along the photometric major axis and covering the whole galaxy to 10 kpc. From these data, we form a complete sample of 224 PNs extending to a dereddened limiting magnitude of m_5007_ = 24.8, which extends 1.5 mag down the PN luminosity function (PNLF). Adopting a foreground extinction of E(B- V) = 0.1, we derive a distance to the galaxy of 3.5 +/- 0.2 Mpc, in excellent agreement with the surface brightness fluctuation method. No population effect on the bright cutoff of PNLF is observed in the isophotal radius range of 2-16 kpc, but the luminosity specific PN density (α_2.5_) seems to increase with radius inside of 7 kpc, in agreement with the α_2.5_-color relation observed for other galaxies. Publication: The Astrophysical Journal Pub Date: September 1993 DOI: 10.1086/173093 Bibcode: 1993ApJ...414..463H Keywords: Astrometry; Elliptical Galaxies; Galactic Halos; Galactic Structure; Luminosity; Planetary Nebulae; Astronomical Photometry; Chemical Evolution; Emission Spectra; Galactic Evolution; Magnitude; Mass Distribution; Oxygen Spectra; Astrophysics; COSMOLOGY: DISTANCE SCALE; GALAXIES: INDIVIDUAL NGC NUMBER: NGC 5128; ISM: PLANETARY NEBULAE: GENERAL full text sources ADS | data products SIMBAD (15) NED (1) CDS (1) Related Materials (2) Part 2: 1993ApJS...88..423H Part 3: 1995ApJ...449..592H
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