Some Aspects of the calculation of Balmer lines in the sun and stars

Details Some Aspects of the calculation of Balmer lines in the sun and stars Some Aspects of the calculation of Balmer lines in the sun and stars

2002-01-15

arxiv.org/abs/astro-ph/0201258v1

Astronomy and Astrophysics

Astrophysics

Submitted to Astronomy and Astrophysics Better figures at http://astro.lsa.umich.edu/users/cowley

Scientific paper

10.1051/0004-6361:20020421

We compare the results of Balmer-line calculations using recent theory and improved computational algorithms with those from the widely-used SYNTHE and BALMER9 routines. The resulting profiles are mostly indistinguishable. Good fits to the normalized solar Balmer lines H$\alpha$ through H$\delta$ are obtained (apart from the cores) using the recent unified-broadening calculations by Barklem and his coworkers provided that some adjustment for the continuum is performed. We discuss a surprising linearity with temperature of the Balmer line profiles in dwarfs.

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