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read_corot

Source: R/read_corot.R
read_corot.Rd

read_corot reads CoRoT FITS files

Usage

read_corot(corotfits, hdu = 1)

Arguments

hdu

Numeric, scalar. Data block: 1 (default) or 2,3 (additional data)

filename

String, scalar. Input CoRoT FITS file (.FITS)

Value

A column-named dataframe containing the lightcurve and related data as well as the original header as attributes.

Header data is stored as attributes. To see all attributes use: attributes(yourobject)

To select one particular attribute use attr(yourobject, "name-of-attribute")

Details

This function reads CoRoT mission FITS files and stores the result in an R dataframe. The function reads

  • AN2_STAR files. Former Seismo Field. These files correspond to bright stars observed by CoRoT (V<=8). It contains two binary blocks accessed by the hdu parameter.

  • EN2_STAR_CH files. Former Exo Field. These files correspond to faint stars observed by CoRoT (8<V<12). It contains three binary blocks accessed by the hdu parameter.

Details about the content of each file are given below. All the information has been extracted from the publication CoRoT Legacy Book(https://www.edp-open.org/books/edp-open-books/320-the- corot-legacy-book)

AN2_STAR (hdu=1)

  • DATETT: (double) date of measurement in Terrestrial Time; terrestrial time, Julian date

  • RAWFLUX: (float) Integrated red flux; e- per 32s (32-s or 512-s sampling)

  • RAWFLUXDEV: (float) Standard deviation of the 16 exposures of 32 s in the green channel added for the 512 sampling; e- per 32s

  • RAWSTATUS: (int)

  • BG: (float) Background flux already subtracted; e- per 32s

AN2_STAR (hdu=2)

  • DATEBARTT: (double) date of the measurement in the solar barycentric reference frame; Solar barycentric Terrestrial Time, Julian day

  • FLUXBAR: (float) White flux, after the gap filling correction; e- per 32s

  • FLUXDEVBAR: (float)

  • STATUSBAR: (int) Flag of the status

AN2_STAR (hdu=3)

  • DATEBARREGTT: (double) date of the measurement in the solar barycentric reference frame; Solar barycentric Terrestrial Time, Julian day.

  • FLUXBARREG: (float) White flux, after the gap filling correction; e- per 32s

  • FLUXDEVBARREG: (float)

  • STATUSBARREG: (int) Flag of the status

EN2_STAR_CH (hdu=1)

  • DATE: (string) calendar date, yyyy-mm-ddThh:mm:ss

  • DATETT: (double) date of measurement in Terrestrial Time; terrestrial time, Julian date

  • DATEBARTT: (double ) date of the measurement in the solar barycentric reference frame; Solar barycentric Terrestrial Time, Julian day

  • STATUS: (int) Flag of the status

  • REDFLUX: (float) Integrated red flux; e- per 32s (32s or 512s sampling)

  • REDFLUXDEV: (float) Standard deviation of the 16 exposures of 32 s in the green channel added for the 512 sampling; e- per 32s

  • GREENFLUX: (float) Integrated green flux; e- per 32s (32s or 512s sampling)

  • GREENFLUXDEV: (float) Standard deviation of the 16 exposures of 32 s in the green channel added for the 512 sampling; e- per 32s

  • BLUEFLUX: (float) Integrated blue flux; e- per 32s (32s or 512s sampling)

  • BLUEFLUXDEV: (float) Standard deviation of the 16 exposures of 32 s in the green channel added for the 512 sampling; e- per 32s

  • WHITEFLUX: (float) Integrated white flux; e- per 32s

  • BG: (float) Background flux already subtracted; e- per 32s

EN2_STAR_CH (hdu=2)

  • DATETT: (double) date of measurement in Terrestrial Time; terrestrial time, Julian date

  • DATEBARTT: (double ) date of the measurement in the solar barycentric reference frame; Solar barycentric Terrestrial Time, Julian day

  • WHITEFLUXFIL: (float) White flux, after the gap filling correction; e- per 32s

  • STATUSFIL: (int) Flag of the status

  • TEXP: (int) Exposure Time; 32s or 512s

Examples

myLC_exo <- readobs_corot('/myhome/EN2_STAR_CHR_corotid_tini-tfin.fits')
#> Error in readobs_corot("/myhome/EN2_STAR_CHR_corotid_tini-tfin.fits"): could not find function "readobs_corot"
myLC_sis <- readobs_corot('/myhome/AN2_STAR_corotid_tini-tfin.fits')
#> Error in readobs_corot("/myhome/AN2_STAR_corotid_tini-tfin.fits"): could not find function "readobs_corot"

if (FALSE) {
  readobs_corot('/myhome/EN2_STAR_CHR_corotid_tini-tfin.fits')
}