J/AJ/131/2089 Planetary nebulae in NGC 3379 and NGC 3384 (Sluis+, 2006)
Uncovering planetary nebulae in early-type galaxies using the Rutgers
Fabry-Perot.
Sluis A.P.N., Williams T.B.
<Astron. J., 131, 2089-2104 (2006)>
=2006AJ....131.2089S 2006AJ....131.2089S
ADC_Keywords: Planetary nebulae ; Galaxies, nearby; Radial velocities
Keywords: galaxies: elliptical and lenticular, cD -
galaxies: kinematics and dynamics - instrumentation: spectrographs -
planetary nebulae: general
Abstract:
We report on observations of four early-type galaxies performed with
the Rutgers Fabry-Perot in order to search for planetary nebulae (PNe)
in these systems. The aim is to use the PNe as kinematic tracers of
the galaxy potential. We describe our data reduction and analysis
procedure and show that the proper calibration of our detection
statistic is crucial in getting down to our limiting magnitude of
m5007=26.1. In the case of the two Leo galaxies, we find moderately
sized samples: 54 PNe in NGC 3379 and 50 PNe in NGC 3384; NGC 4636
(two PNe) and NGC 1549 (six PNe) are included for completeness. We
present our samples in tabular form, as well as the spectrum for each
PN.
Description:
We observed the four galaxies in our sample with the Rutgers
Fabry-Perot over the course of two runs at the Cerro Tololo
Inter-American Observatory (CTIO) 4m Blanco telescope.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 85 54 NGC 3379 planetary nebulae
table6.dat 80 50 NGC 3384 planetary nebulae
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See also:
J/ApJ/344/715 : Planetary nebulae as standard candles. IV. (Ciardullo+, 1989)
J/ApJ/414/454 : NGC 3379 planetary nebulae radial velocities (Ciardullo+ 1993)
J/ApJ/449/592 : NGC 5128 PN. III. (Hui+ 1995)
J/ApJ/602/685 : NGC 5128 planetary nebulae (Peng+, 2004)
Byte-by-byte Description of file: table5.dat table6.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- ID Source identification (1)
5- 6 I2 h RAh Hour of Right Ascension (J2000) (2)
8- 9 I2 min RAm Minute of Right Ascension (J2000) (2)
11- 15 F5.2 s RAs Second of Right Ascension (J2000) (2)
16 A1 --- DE- Sign of the Declination (J2000) (2)
17- 18 I2 deg DEd Degree of Declination (J2000) (2)
20- 21 I2 arcmin DEm Arcminute of Declination (J2000) (2)
23- 26 F4.1 arcsec DEs Arcsecond of Declination (J2000) (2)
28- 33 F6.1 0.1nm lambda Peak wavelength in Angstroms
35- 38 I4 km/s HRV Heliocentric line-of-sight velocity
40- 41 I2 km/s e_HRV Uncertainty in HRV
43- 46 F4.2 10-19W/m2 Flux Emission line flux in units
of 10-16erg/s/cm2
48- 52 F5.2 mag 5007mag Emission line magnitude (3)
54- 57 F4.2 mag e_5007mag Uncertainty in 5007mag
59- 63 F5.1 --- S The likelihood ratio test statistic (4)
65- 66 I2 --- Num ? Number of data points in spectrum
68- 71 F4.1 --- S/N Signal-to-noise ratio
73- 74 I2 --- C89ID ? Ciardullo et al. (1989, J/ApJ/344/715)
identification
76- 80 F5.2 mag C89mag ? Ciardullo et al. (1989, J/ApJ/344/715)
emission line magnitude
82- 85 I4 km/s C89HRV ? Ciardullo et al. (1989, J/ApJ/344/715)
heliocentric line-of-sight velocity
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Note (1): E and W denote PNe found in the East and West fields, respectively.
Nomenclature in Simbad:
Table 5: [SW2006] NGC 3379 WNN
Table 6: [SW2006] NGC 3384 WNN
Note (2): Where the uncertainty in each coordinate is 0.4" (includes random and
systematic uncertainty);
Note (3): 5007mag=-2.5log(Flux)+13.74 (no extinction correction was made).
Note (4): The spectra have a wide range in their number of data points and we
determine Sc(α) for regions with one, two, or three pointings
separately. Hence, the values of S listed in Table 6 are not always
directly comparable.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 22-May-2007