read_cestam

read_cestam reads the content of stellar structure files form CESTAM code, and save it to a dataframe.

Usage

read_cestam(strFile)

Arguments

file: ASCII file with a stellar structure compliant with stellar oscillations computation with extension .osc or .OSC.

Value

A dataframe with the stellar structure, in which global parameters -common values for the star - are saved as attributes, and variables - physical quantities that vary with the stellar depth- are saved as columns.

Details

This function takes one argument: the stellar structure file .osc from CESTAM code. It should also compatible with last versions (deprecated) of CESAM2K models as well as MESA (OSC-type) models. The input file can be local or web address (http).

Metadata

`name`	name of the model file
`code`	generator code name
`version`	version of the code
`date`	date of the computation
`time`	time of the computation

Global variables

`rmass`	mass, cgs
`R`	radius, cgs
`rphot`	photometric radius, cgs
`rlum`	luminosity, cgs, log10
`al`	convective alpha (dimensionless)
`age`	age, Myr
`rotini`	initial angular rotation (in rad/s)
`rlogg`	surface gravity, cgs, log10
`teff`	effective temperature (temp(r=rphot)), K
`nshell`	number of shells of the model (radial)

Structure variables

`r`	radius profile, cgs, log
`q`	mass profile, cgs, log
`temp`	temperature profile, K
`p`	pressure profile, cgs
`rho`	density profile rho, cgs
`gamma`	gamma1 parameter, cgs
`aast`	A constant (BV)
`rr`	radius normalized to total radius
`c1`	solar dynamical time
`cs2`	sound speed squared, cgs
`vg`	solar dynamical time
`rot`	rotation profile, rad/s

Examples

mystruc <- read_cestam("/my/path/file.osc")
#> Warning: cannot open file '/my/path/file.osc': No such file or directory
#> Error in file(description = strFile, open = "r"): cannot open the connection

mystruc_from_web <- read_cestam("http://my-path-to-file/myoscfile.osc")
#> Warning: URL 'http://my-path-to-file/myoscfile.osc': status was 'Couldn't resolve host name'
#> Error in file(description = strFile, open = "r"): cannot open the connection to 'http://my-path-to-file/myoscfile.osc'

if (FALSE) {
  mystruc <- read_cestam("/my/path/file.osc")
}