TLUSTY and SYNSPEC Users's Guide IV: Upgraded Versions 208 and 54

Abstract

We present a brief description of the newly upgraded versions of the programs TLUSTY, version 208, and SYNSPEC, version 54. TLUSTY is used to generate model stellar atmospheres or accretion disks, and SYNSPEC produces detailed synthetic spectra and/or opacity tables. This paper complements published guides that provide a detailed description of earlier versions of the codes, TLUSTY205, and SYNSPEC51. The main upgrades include the flexible construction of opacity tables in SYNSPEC, and their use in producing hybrid models with TLUSTY}, with important species treated in NLTE, while the bulk of opacity of atomic and molecular lines and continua are considered in LTE using a pre-calculated opacity table. There is also a number of additional changes and upgrades that increase the versatility and flexibility of these codes.

111 pages, 4 figures

References in corpus (3)

• A brief introductory guide to TLUSTY and SYNSPEC
• TLUSTY User's Guide III: Operational Manual
• TLUSTY User's Guide II: Reference Manual

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• WD 1145+017: Alternative models of the atmosphere, dust clouds, and gas rings
• Chemical abundances of the young inner-disk open cluster NGC 6705 observed by APOGEE: sodium-rich and not $\alpha$-enhanced
• Abundance analysis of a nitrogen-rich extreme-helium hot subdwarf from the SALT survey