J/ApJ/383/487 Planetary nebulae as standard candles. VII. (Ciardullo+, 1991)
Planetary nebulae as standard candles.
VII. A test versus Hubble type in the NGC 1023 group.
Ciardullo R., Jacoby G.H., Harris W.E.
<Astrophys. J. 383, 487 (1991)>
=1991ApJ...383..487C 1991ApJ...383..487C
ADC_Keywords: Planetary nebulae ; Galaxies, nearby
Keywords: galaxies: distances - galaxies: individual (NGC 1023, NGC 891) -
galaxies: stellar content - luminosity function - nebulae: planetary
Abstract:
We present the results of an [O III] λ5007 survey for planetary
nebulae in the NGC 1023 Group. In all, we detected 143 planetary
nebula candidates: 110 in the SB0 galaxy NGC 1023 and 33 in the halo
of the edge-on Sb spiral NGC 891. Using a statistically complete and
homogeneous sample of planetary nebulae and the procedures described
in previous papers in the series, we derive distances to these
galaxies using the planetary nebula luminosity function (PNLF). After
correcting for foreground extinction by using the estimated reddening
values of Burstein and Heiles, we find the distance moduli for
NGC 1023 and NGC 891 are 29.97±0.14 and 29.97±.16, respectively.
The similarity of these distances demonstrates the insensitivity of
the PNLF to galaxy Hubble types and population age, and again confirms
it as one of the best extragalactic standard candles.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 50 110 NGC 1023 planetary nebulae
table3.dat 51 33 NGC 891 planetary nebulae
table5.dat 37 36 Astrometric reference stars
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See also:
J/ApJ/339/53 : Paper II, M 31 (Ciardullo+, 1989)
J/ApJ/344/704 : Paper III, M 81 (Jacoby+, 1989)
J/ApJ/344/715 : Paper IV, Leo I group (Ciardullo+, 1989)
J/ApJ/356/332 : Paper V, Virgo cluster (Jacoby+, 1990)
J/ApJ/365/471 : Paper VI, Magellanic Clouds (Jacoby+, 1990)
J/ApJ/416/62 : Paper IX, Fornax cluster (McMillan+, 1993)
J/ApJ/462/1 : Paper X, Coma I region (Jacoby+, 1996)
J/ApJ/479/231 : Paper XI, M 101, M 51, M96 (Felmeier+, 1997)
J/ApJ/577/31 : Paper XII, Pop I and Pop II (Ciardullo+, 2002)
Byte-by-byte Description of file: table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- [CJH91] Star identification (NGC NNNN NNN) (G1)
14- 15 I2 h RAh Right ascension (1950)
17- 18 I2 min RAm Right ascension (1950)
20- 24 F5.2 s RAs Right ascension (1950)
26 A1 --- DE- Declination sign (1950)
27- 28 I2 deg DEd Declination (1950)
30- 31 I2 arcmin DEm Declination (1950)
33- 36 F4.1 arcsec DEs Declination (1950)
38- 42 F5.2 mag m5007 m5007 magnitude (=-2.5logF(5007) - 13.74)
44- 47 F4.1 arcsec Z ? High above the plane (table3 only)
50 A1 --- Sample [S] S: in the sample (table2 only)
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- [CJH91] Astrometric reference star name (NGC NNNN a) (G1)
16 I1 h RAh Right ascension (1950)
18- 19 I2 min RAm Right ascension (1950)
21- 25 F5.2 s RAs Right ascension (1950)
27 A1 --- DE- Declination sign (1950)
28- 29 I2 deg DEd Declination (1950)
31- 32 I2 arcmin DEm Declination (1950)
34- 37 F4.1 arcsec DEs Declination (1950)
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Global notes:
Note (G1): Nomenclature:
Table 2: [CJH91] NGC 1023 NNN in Simbad
Table 3: [CJH91] NGC 891 NN in Simbad
Table 5: [CJH91] NGC 891 a in Simbad
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History:
Prepared via OCR at CDS.
References:
Jacoby, Paper I 1989ApJ...339...39J 1989ApJ...339...39J
Ciardullo & Jacoby Paper VIII 1992ApJ...388..268C 1992ApJ...388..268C
(End) James Marcout, Patricia Bauer [CDS] 16-Jan-2003