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 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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 51 43 Journal of observations
table6.dat 110 15 Luminosity specific PN densities
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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
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Bytes Format Units Label Explanations
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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
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Note (1): The effective air mass during a 1hr exposure (Stetson, 1989,
Highlights Astron. 8, 635).
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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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
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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.
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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