J/A+A/373/536 New galactic bulge PNe (van de Steene+, 2001)
Radio observations of new galactic bulge planetary nebulae.
van de Steene G. C., Jacoby G.
<Astron. Astrophys. 373, 536 (2001)>
=2001A&A...373..536V 2001A&A...373..536V
ADC_Keywords: Planetary nebulae ; Radio lines ; Morphology
Keywords: planetary nebulae: general - galaxy bulge continuum: stars -
galaxy: stellar content radio
Abstract:
We observed 64 newly identified galactic bulge planetary nebulae in
the radio continuum at 3 and 6 cm with the Australia Telescope Compact
Array. We present their radio images, positions, flux densities, and
angular sizes. The survey appears to have detected a larger ratio of
more extended planetary nebulae with low surface brightness than in
previous surveys. We calculated their distances according to Van de
Steene & Zijlstra (1995A&A...293..541V 1995A&A...293..541V). We find that most of the new
sample is located on the near side around the galactic center and
closer in than the previously known bulge PNe. Based on Hα
images and spectroscopic data, we calculated the total Hα flux.
We compare this flux value with the radio flux density and derive the
extinction. We confirm that the distribution of the extinction values
around the galactic center rises toward the center, as expected.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 84 64 Optical and radio positions of the new galactic
bulge PNe.
table2.dat 96 57 Radio flux densities at 6 and 3 cm, and angular
sizes
tables.tex 131 167 LaTeX version of the tables
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See also:
V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- JaSt PN name
4- 5 I2 h RAh Optical right ascension (J2000.0)
7- 8 I2 min RAm Optical right ascension (J2000.0)
10- 14 F5.2 s RAs Optical right ascension (J2000.0)
17 A1 --- DE- Optical declination sign (J2000.0)
18- 19 I2 deg DEd Optical declination (J2000.0)
21- 22 I2 arcmin DEm Optical declination (J2000.0)
24- 28 F5.2 arcsec DEs Optical declination (J2000.0)
32- 33 I2 h RArh ? Radio right ascension (J2000.0) (1)
35- 36 I2 min RArm ? Radio right ascension (J2000.0)
38- 42 F5.2 s RArs ? Radio right ascension (J2000.0)
43 A1 --- u_RArs Uncertainty flag on RArs
45 A1 --- DEr- Radio declination sign (J2000.0)
46- 47 I2 deg DErd ? Radio declination (J2000.0)
49- 50 I2 arcmin DErm ? Radio declination (J2000.0)
52- 56 F5.2 arcsec DErs ? Radio declination (J2000.0)
57 A1 --- u_DErs Uncertainty flag on DErs
59- 63 F5.2 arcsec oRA ? Offset in right ascension
65- 69 F5.2 arcsec oDE ? Offset in declination
71 I1 --- Run [1/2] Run number (2)
73- 84 A12 --- ND Note (not detected)
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Note (1): The radio position is the position of the peak flux density per beam
of the PN at 6cm.
Note (2): Objects for which run=1 were observed in 1997,
objects for which run=2 were observed in 1999.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- JaSt PN name
4- 8 F5.2 mJy Peak6cm ? Peak flux density at 6cm (5GHz) in mJy/beam
10 A1 --- l_Flux6cm Limit flag on Flux6cm
11- 14 F4.1 mJy Flux6cm ? Total radio flux density at 6cm (5GHz)
15 A1 --- u_Flux6cm Uncertainty flag on Flux6cm
16- 19 F4.1 mJy e_Flux6cm ? rms uncertainty on Flux6cm
21- 24 F4.2 mJy Noise6cm ? Noise in the 6cm map in mJy/beam
26- 30 F5.2 mJy Peak3cm ? Peak flux density at 3cm (10GHz) in mJy/beam
32 A1 --- l_Flux3cm Limit flag on Flux3cm
33- 36 F4.1 mJy Flux3cm ? Total radio flux density at 3cm (10GHz)
37 A1 --- u_Flux3cm Uncertainty flag on Flux3cm
39- 41 F3.1 mJy e_Flux3cm ? rms uncertainty on Flux3cm
43- 46 F4.2 mJy Noise3cm ? Noise in the 3cm map (in mJy/beam)
48- 52 F5.2 arcsec DDE ? Deconvolved FWHM (Δδ)
53 A1 --- u_DDE Uncertainty flag on DDE
54 A1 --- --- [x]
55- 59 F5.2 arcsec DRA ? Deconvolved FWHM (Δα)
60 A1 --- u_DRA Uncertainty flag on DRA
61- 62 A2 --- PS [PS ] Point source
64- 66 F3.1 arcsec MajAxis FWHM of the beam major axis (maj)
68 A1 --- --- [x]
70- 73 F4.2 arcsec MinAxis FWHM of the beam minor axis (min)
75 A1 --- l_Diam Limit flag on Diam
76- 80 F5.2 arcsec Diam ? Equivalent FWHM diameter
81 A1 --- u_Diam Uncertainty flag on Diam
83 A1 --- Method [CG] Method (1)
85- 87 A3 --- n_Diam [3cm ] Note (2)
91 A1 --- l_Theta Limit flag on Theta
92- 95 F4.1 arcsec Theta ? Estimation of the full equivalent diameter
96 A1 --- u_Theta Uncertainty flag on Theta
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Note (1): The diameter FWHM is the deconvolved FWHM determined after fitting a
Gaussian model (G) or after measuring the size from the contour
plot (C).
Note (2): If 3cm, diameter determined at 3cm, otherwise at 6cm.
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Acknowledgements: Griet Van de Steene
(End) Patricia Bauer [CDS] 11-May-2001