J/AJ/140/1919 Zero point spectral energy distribution (Engelke+, 2010)
Spectral irradiance calibration in the infrared.
XVII. Zero-magnitude broadband flux reference for visible-to-infrared
photometry.
Engelke C.W., Price S.D., Kraemer K.E.
<Astron. J., 140, 1919-1928 (2010)>
=2010AJ....140.1919E 2010AJ....140.1919E
ADC_Keywords: Spectra, infrared ; Energy distributions
Keywords: standards - stars: general - techniques: photometric -
techniques: spectroscopic
Abstract:
The absolutely calibrated infrared (IR) stellar spectra of standard
stars described by Engelke et al. are being extended into the visible
and will span a continuous wavelength range from ∼0.35um to 35.0um.
This paper, which is a continuation of the series on calibration
initiated with Cohen et al., presents the foundation of this extension.
We find that due to various irregularities Vega (α Lyr) is not
suitable for its traditional role as the primary visible or
near-infrared standard star. We therefore define a new zero-point flux
that is independent of Vega and, as far as is feasible, uses measured
spectral energy distributions (SEDs) and fluxes derived from
photometry. The calibrated primary stars now underpinning this
zero-point definition are 109 Vir in the visible and Sirius (α CMa)
in the infrared. The resulting zero-point SED tests well against solar
analog data presented by Rieke et al. (2008, Cat. J/AJ/135/2245) while
also maintaining an unambiguous link to specific calibration stars,
thus providing a pragmatic range of options for any researcher wishing
to tie it to a given set of photometry.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 21 11770 Zero point spectral energy distribution
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See also:
J/AJ/110/275 : IR spectra of standard stars (Cohen+ 1995)
J/AJ/112/241 : Spectral irradiance calibration. VI. (Cohen+ 1996)
J/AJ/112/2274 : Spectral irradiance calibration. VII. (Cohen+ 1996)
J/AJ/132/1445 : Standard calibration stars infrared spectra (Engelke+, 2006)
J/AJ/135/2245 : Absolute spectrum of the Sun & Vega for 0.2-30um (Rieke+, 2008)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 9 F9.6 um lambda [0.11/35] Wavelength
11- 21 E11.5 W/cm2/um Flux Observed flux
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History:
From electronic version of the journal
References:
Cohen et al., Paper I 1992AJ....104.1650C 1992AJ....104.1650C
Cohen et al., Paper II 1992AJ....104.2030C 1992AJ....104.2030C
Cohen, Paper III 1992AJ....104.2045C 1992AJ....104.2045C
Cohen et al., Paper IV 1995AJ....110..275C 1995AJ....110..275C, Cat. J/AJ/110/275
Cohen & Davies, Paper V 1995MNRAS.276..715C 1995MNRAS.276..715C
Cohen et al., Paper VI 1996AJ....112..241C 1996AJ....112..241C, Cat. J/AJ/112/241
Cohen et al., Paper VII 1996AJ....112.2274C 1996AJ....112.2274C, Cat. J/AJ/112/2274
Cohen et al., Paper VIII 1998AJ....115.1671C 1998AJ....115.1671C
Cohen, Paper IX 1998AJ....115.2092C 1998AJ....115.2092C
Cohen et al., Paper X 1999AJ....117.1864C 1999AJ....117.1864C
Witteborn et al., Paper XI 1999AJ....117.2552W 1999AJ....117.2552W
Cohen et al., Paper XII 2001AJ....121.1180C 2001AJ....121.1180C
Cohen et al., Paper XIII 2003AJ....125.2645C 2003AJ....125.2645C
Cohen et al., Paper XIV 2003AJ....126.1090C 2003AJ....126.1090C
Price et al., Paper XV 2004AJ....128..889P 2004AJ....128..889P
Engelke et al., Paper XVI 2006AJ....132.1445E 2006AJ....132.1445E, Cat. J/AJ/132/1445
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 13-Jul-2012