J/ApJ/414/463 Planetary nebula system of NGC 5128 (Hui+, 1993)
The planetary nebula system and dynamics of NGC 5128. I. Planetary nebulae as standard candles. Hui X.-H., Ford H.C., Ciardullo R., Jacoby G.H. <Astrophys. J. 414, 463 (1993)> =1993ApJ...414..463H
ADC_Keywords: Planetary nebulae ; Positional data ; Galaxies, nearby Keywords: distance scale - galaxies: individual (NGC 5128) - planetary nebulae: general 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 4m in telescope. By comparing CCD images centered on the characteristic emission line [O III] λ5007Å and on the adjacent continuum, we identify a total of 785 PNs in areas extending 20kpc along the photometric major axis and covering the whole galaxy to 10kpc. From these data, we form a complete sample of 224 PN's extending to a dereddened limiting magnitude of m5007=24.8, which extends 1.5mag 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±0.2Mpc, 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 2-16kpc, but the luminosity specific PN density (α2.5) seems to increase with radius inside of 7kpc, in agreement with the α2.5-color relation observed for other galaxies. Description: Our PN observations of NGC 5128 took place over three observing seasons. During 1985 and 1986, we took [O III] λ5007Å on-band/off-band pictures of selected galaxy fields using the RCA CCD camera at the prime focus of the CTIO 4m telescope. In 1988 a third survey was carried out on the same telescope with a TI CCD. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 51 43 Journal of observations table6.dat 110 15 Luminosity specific PN densities
See also: J/ApJS/88/423 : NGC 5128 PN. II. (Hui+ 1993) J/ApJ/449/592 : NGC 5128 PN. III. (Hui+ 1995) J/ApJ/602/685 : PN of NGC 5128 outer halo (Peng+, 2004) J/ApJ/414/454 : NGC 3379 planetary nebulae radial velocities (Ciardullo+ 1993) J/ApJ/339/53 : Planetary nebulae as standard candles. II. (Ciardullo+, 1989) J/ApJ/344/704 : Planetary nebulae as standard candles. III. (Jacoby+, 1989) J/ApJ/344/715 : Planetary nebulae as standard candles. IV. (Ciardullo+, 1989) J/ApJ/356/332 : Planetary nebulae as standard candles. V. (Jacoby+, 1990) J/ApJ/365/471 : Planetary nebulae as standard candles. VI. (Jacoby+, 1990) J/ApJ/383/487 : Planetary nebulae as standard candles. VII. (Ciardullo+, 1991) J/ApJ/416/62 : Planetary nebulae as standard candles. IX. (McMillan+, 1993) J/ApJ/462/1 : Planetary nebulae as standard candles. X. (Jacoby+, 1996) J/ApJ/479/231 : Planetary nebulae as standard candles. XI. (Feldmeier+, 1996) J/ApJ/577/31 : Planetary nebulae as standard candles. XII. (Ciardullo+, 2002) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 A3 --- Field Field designation 6- 7 I2 h RAh Right ascension (J2000) 9- 10 I2 min RAm Right ascension (J2000) 12- 16 F5.2 s RAs Right ascension (J2000) 19 A1 --- DE- Declination sign (J2000) 20- 21 I2 deg DEd Declination (J2000) 23- 24 I2 arcmin DEm Declination (J2000) 26- 29 F4.1 arcsec DEs Declination (J2000) 32- 34 F3.1 arcsec Seeing Seeing 37- 40 F4.2 --- AirMass AirMass (1) 42- 51 A10 "YYYY/MM/DD" Date UT observation date
Note (1): The effective air mass during a 1hr exposure (Stetson, 1989, Highlights Astron. 8, 635).
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 4 I4 --- NGC NGC number 6- 9 F4.2 mag (B-V)0 Dereddened (B-V) colour index 11- 12 I2 10-9/solLum alpha2.5 Luminosity specific PN density (1) 14- 32 A19 --- BibCode Bibcode of the reference 34- 49 A16 --- Aut Author's name of the reference 51-110 A60 --- Comm Comments about the reference
Note (1): This number of PN per 10+9 solLum is scaled to 2.5mag below the bright cutoff, but normalized in the B band rather than in the bolometric light due to the lack of proper multicolor infrared photometry.
History: Prepared via OCR at CDS. 07-Jun-2005 : Equinox 2000 modified into J2000 (from G.H. Jacoby)
(End) James Marcout, Patricia Vannier [CDS] 17-Jan-2005
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