J/MNRAS/440/2026 Calibration of some distance scales (Vukotic+, 2014)
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On calibration of some distance scales in astrophysics.
Vukotic B., Jurkovic M., Urosevic D., Arbutina B.
=2014MNRAS.440.2026V (SIMBAD/NED BibCode)
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ADC_Keywords: Models ; Stars, distances ; Stars, variable ; Planetary nebulae ;
Supernova remnants
Keywords: methods: data analysis - stars: variables: Cepheids -
planetary nebulae: general - ISM: supernova remnants
Abstract:
We present a method for distance calibration without using standard
fitting procedures. Instead, we use random resampling to reconstruct
the probability density function (PDF) of calibration data points in
the fitting plane. The resulting PDF is then used to estimate
distance-related properties. The method is applied to samples of radio
surface brightness to diameter ({Sigma}-D}) data for the Galactic
supernova remnants (SNRs) and planetary nebulae (PNe), and
period-luminosity (PL) data for the Large Magellanic Cloud (LMC)
fundamental mode classical Cepheids. We argue that resulting density
maps can provide more accurate and more reliable calibrations than
those obtained by standard linear fitting procedures. For the selected
sample of the Galactic SNRs, the presented PDF method of distance
calibration results in a smaller average distance fractional error of
up to ~16 percentage points. Similarly, the fractional error is
smaller for up to ~8 and ~0.5 percentage points, for the samples of
Galactic PNe and LMC Cepheids, respectively. In addition, we provide a
PDF-based calibration data for each of the samples.
Description:
We apply our analysis to the radio surface brightness to diameter
({Sigma}-D) relation for supernova remnants (SNRs) and planetary
nebulae (PNe), and also to the period-luminosity (PL) relation for
classical Cepheids. The majority of the work done on the {Sigma}-D
relation was in order to produce reliable calibrations that can be
used to calculate distances.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 93 99 Calibrating values for distance determination for
the Galactic {Sigma}-D relations (SNRs and PNe)
and the PL relation (in the form of apparent
magnitude m versus period P) for fundamental
mode Cepheids in I and V bands,
grid size is 10^2^x10^2^
table3.dat 93 999 Calibrating values for distance determination for
the Galactic {Sigma}-D relations (SNRs and PNe)
and the PL relation (in the form of apparent
magnitude m versus period P) for fundamental
mode Cepheids in I and V bands,
grid size is 10^3^x10^3^
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Byte-by-byte Description of file: table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 7 F7.3 [W/m2/Hz/sr] logSS SNRs sample surface brightness
9- 14 F6.2 pc D1S ?=- SNRs sample Mode distance
(with mode estimator)
16- 20 F5.2 pc D2S ?=- SNRs sample Mean distance
(with mean estimator)
22- 26 F5.2 pc D3S ?=- SNRs sample Med. distance
(with median estimator)
28- 34 F7.3 [W/m2/Hz/sr] logSP PNe sample surface brightness
36- 39 F4.2 pc D1P ?=- PNe sample distance
(with mode estimator)
41- 44 F4.2 pc D2P ?=- PNe sample distance
(with mean estimator)
46- 49 F4.2 pc D3P ?=- PNe sample distance
(with median estimator)
51- 57 F7.4 [d] logP Period
59- 63 F5.2 mag Imag1 ?=- Cepheids sample I magnitude
(with mode estimator)
65- 69 F5.2 mag Imag2 ?=- Cepheids sample I magnitude
(with mean estimator)
71- 75 F5.2 mag Imag3 ?=- Cepheids sample I magnitude
(with median estimator)
77- 81 F5.2 mag Vmag1 ?=- Cepheids sample V magnitude
(with mode estimator)
83- 87 F5.2 mag Vmag2 ?=- Cepheids sample V magnitude
(with mean estimator)
89- 93 F5.2 mag Vmag3 ?=- Cepheids sample V magnitude
(with median estimator)
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History:
From electronic version of the journal
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(End) Patricia Vannier [CDS] 31-Jul-2015