TY - JOUR
T1 - The Absolute Magnitude of the Sun in Several Filters
AU - Willmer, Christopher N.A.
N1 - Funding Information:
I thank George Rieke for suggestions and discussions. I also thank the anonymous referee and the editor Dr. Shadia Habbal, whose suggestions helped improve the presentation. Funding from the JWST/NIRCam contract NAS5-02015 to the University of Arizona, the use of the NASA/SAO ADS, the NASA/IPAC Infrared Science Archive, Simbad (at Strasbourg and Harvard), and the Mikulski Archive for Space Telescopes are gratefully acknowledged. This work uses data from the SOLID Projecthttp://projects.pmodwrc.ch/solid/, which is funded by the European Community’s Seventh Framework Programne (FP7 2012) under grant agreement no 313188.
Publisher Copyright:
© 2018. The American Astronomical Society. All rights reserved..
PY - 2018/6
Y1 - 2018/6
N2 - This paper presents a table with estimates of the absolute magnitude of the Sun and the conversions from vegamag to the AB and ST systems for several wide-band filters used in ground-based and space-based observatories. These estimates use the dustless spectral energy distribution (SED) of Vega, calibrated absolutely using the SED of Sirius, to set the vegamag zero-points and a composite spectrum of the Sun that coadds space-based observations from the ultraviolet to the near-infrared with models of the Solar atmosphere. The uncertainty of the absolute magnitudes is estimated by comparing the synthetic colors with photometric measurements of solar analogs and is found to be ∼0.02 mag. Combined with the uncertainty of ∼2% in the calibration of the Vega SED, the errors of these absolute magnitudes are ∼3%-4%. Using these SEDs, for three of the most utilized filters in extragalactic work the estimated absolute magnitudes of the Sun are M B = 5.44, M V = 4.81, and M K = 3.27 mag in the vegamag system and M B = 5.31, M V = 4.80, and M K = 5.08 mag in AB.
AB - This paper presents a table with estimates of the absolute magnitude of the Sun and the conversions from vegamag to the AB and ST systems for several wide-band filters used in ground-based and space-based observatories. These estimates use the dustless spectral energy distribution (SED) of Vega, calibrated absolutely using the SED of Sirius, to set the vegamag zero-points and a composite spectrum of the Sun that coadds space-based observations from the ultraviolet to the near-infrared with models of the Solar atmosphere. The uncertainty of the absolute magnitudes is estimated by comparing the synthetic colors with photometric measurements of solar analogs and is found to be ∼0.02 mag. Combined with the uncertainty of ∼2% in the calibration of the Vega SED, the errors of these absolute magnitudes are ∼3%-4%. Using these SEDs, for three of the most utilized filters in extragalactic work the estimated absolute magnitudes of the Sun are M B = 5.44, M V = 4.81, and M K = 3.27 mag in the vegamag system and M B = 5.31, M V = 4.80, and M K = 5.08 mag in AB.
KW - astronomical databases: miscellaneous
KW - catalogs
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U2 - 10.3847/1538-4365/aabfdf
DO - 10.3847/1538-4365/aabfdf
M3 - Article
AN - SCOPUS:85051205737
SN - 0067-0049
VL - 236
JO - Astrophysical Journal, Supplement Series
JF - Astrophysical Journal, Supplement Series
IS - 2
M1 - 47
ER -