J/MNRAS/503/2887 PNe angular diameters from SED modeling (Bojicic+, 2021)
Determination of Planetary Nebulae angular diameters from radio continuum
spectral energy distribution modelling.
Bojicic I.S., Filipovic M.D., Urosevic D., Parker Q.A., Galvin T.J.
<Mon. Not. R. Astron. Soc., 503, 2887-2898 (2021)>
=2021MNRAS.503.2887B 2021MNRAS.503.2887B (SIMBAD/NED BibCode)
ADC_Keywords: Planetary nebulae; Radio continuum; Energy distributions
Keywords: methods: miscellaneous - planetary nebulae: general -
radio continuum: general
Abstract:
Powerful new, high-resolution, high-sensitivity, multifrequency,
wide-field radio surveys such as the Australian Square Kilometre Array
Pathfinder (ASKAP) Evolutionary Map of the Universe are emerging. They
will offer fresh opportunities to undertake new determinations of
useful parameters for various kinds of extended astrophysical
phenomena. Here, we consider specific application to angular-size
determinations of Planetary Nebulae (PNe) via a new radio continuum
spectral energy distribution fitting technique. We show that robust
determinations of angular size can be obtained, comparable to the best
optical and radio observations but with the potential for consistent
application across the population. This includes unresolved and/or
heavily obscured PNe that are extremely faint or even non-detectable
in the optical.
Description:
Catalogues of newly measured angular diameters for Planetary Nebulae
using conventional methods and SED modeling.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 109 123 PN angular diameter measurements from maximum
extent estimates at 10% of the peak brightness
in NVAS images
table2.dat 76 120 PN angular diameter measurements from maximum
extent estimates at 10% of the peak brightness
in HST images
table3.dat 106 262 PN angular diameter estimates from SED modeling
using sp-shell model
table4.dat 106 237 PN angular diameter estimates from SED modeling
using pl-shell model
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- HASHPN Id in HASHPN database
6- 15 A10 --- PNG PNG Designation
17- 20 A4 --- band Radio Continuum Band
(1cm, 2cm, 3cm, 6cm or 20cm)
22- 31 F10.6 arcsec MajDiam Major Diameter
33- 42 F10.6 arcsec MinDiam Minor Diameter
44- 54 F11.7 deg DiamPA Positional Angle
56- 65 F10.7 arcsec BMAJ VLA Major Beam FWHM
67- 76 F10.7 arcsec BMIN VLA Minor Beam FWHM
78- 83 F6.2 deg BPA VLA Beam Positional Angle
85- 91 F7.3 mJy/beam Peak Peak Emission
93- 98 F6.3 mJy/beam MeasureLevel 10% level of measurement
100-109 A10 "date" ObsYear Date of VLA observation (Y-M-D)
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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- 4 I4 --- HASHPN Id in HASHPN database
6- 15 A10 --- PNG PNG Designation
17- 25 F9.6 arcsec MajDiam Major Diameter
27- 35 F9.6 arcsec MinDiam Minor Diameter
37- 47 F11.7 deg DiamPA Positional Angle
49- 58 F10.6 ct/s Peak Peak Emission
60- 69 F10.7 ct/s MeasureLevel 10% level of measurement
71- 76 A6 --- Filter HST Filter (F187N, f350lp, f502n, f547m,
f555n, f606n, f606w, f656n or f658n_
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Byte-by-byte Description of file: table[34].dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- HASHPN Id in HASHPN database
7- 17 A11 --- PNG PNG designation
19- 27 F9.5 deg RAdeg Right Ascension FK5 (J2000.0)
29- 37 F9.5 deg DEdeg Declination FK5 (J2000.0)
39- 43 F5.2 arcsec Diam Angular Diameter
45- 49 F5.2 arcsec e_Diam Uncertainty of Angular Diameter
51- 56 F6.3 GHz Freq0 Turnover Frequency
58- 65 F8.3 GHz e_Freq0 Uncertainty of Turnover Frequency
67- 76 F10.5 10+6pc/cm6 EM Emission Measure
78- 89 F12.5 10+6pc/cm6 e_EM Uncertainty of Emission Measure
91- 92 I2 --- NoPoints ? Number of radio points used in the fit
94-104 F11.7 % nrmse Normalized root mean square residuals
106 I1 --- Qtot ? Quality factor
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Acknowledgements:
Ivan Bojicic, i.bojicic(at)westernsydney.edu.au
(End) Patricia Vannier [CDS] 07-Jun-2021