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On the zero point constant of the bolometric correction scale

Date
2021
Author
Bakis, V
Eker, Z.
Bilir, S.
Soydugan, F.
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Abstract
Arbitrariness attributed to the zero-point constant of the V-band bolometric corrections (BCV) and its relation to 'bolometric magnitude of a star ought to be brighter than its visual magnitude' and 'bolometric corrections must always be negative' was investigated. The falsehood of the second assertion became noticeable to us after IAU 2015 General Assembly Resolution B2, where the zero-point constant of bolometric magnitude scale was decided to have a definite value C-Bol(W) = 71.197 425 ... . Since the zero-point constant of the BCV scale could be written as C-2 = C-Bol - C-V, where C-V is the zero-point constant of the visual magnitudes in the basic definition BCV = M-Bol - M-V = m(bol) - m(V), and C-Bol > C-V, the zero-point constant (C-2) of the BCV scale cannot be arbitrary anymore; rather, it must be a definite positive number obtained from the two definite positive numbers. The two conditions C-2 > 0 and 0 < BCV < C-2 are also sufficient for L-V < L, a similar case to negative BCV numbers, which means that 'bolometric corrections are not always negative'. In sum it becomes apparent that the first assertion is misleading causing one to understand bolometric corrections must always be negative, which is not necessarily true.
URI
http://hdl.handle.net/20.500.12627/170481
https://doi.org/10.1093/mnras/stab684
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Creative Commons Lisansı

İstanbul Üniversitesi Akademik Arşiv Sistemi (ilgili içerikte aksi belirtilmediği sürece) Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.

DSpace software copyright © 2002-2016  DuraSpace
Contact Us | Send Feedback
Theme by 
Atmire NV