Data Archive of LMC Clusters

The data products will be defined by a "Product level" designation. The lower the number, the more basic the data product will be. The G refers to GIRAFFE data. All of these were reduced using the GIRAFFE data reduction pipleine girBLDRS.

The star ID numbers will be detailed in a preliminary version of the second data paper to be released soon.

The GIRAFFE observations of the LMC clusters had exposure times of  6x2275s per wavelength order (6 central wavelengths).
 

N11 (111 stars observed with MEDUSA/GIRAFE:)

Details of stars and IDs from Evans et al. (2006) ; but note erratum Evans et al. (2007)
Finding chart available (fchart_n11.eps).

Product level

Details

Format

Download

No. Spectra

Released

G0

Individual orders, single exposures, no sky subtraction (tarballs are 16-25MB)

ASCII

N11.3958.G0.V1.ascii.tar.gz
N11.4124.G0.V1.ascii.tar.gz
N11.4297.G0.V1.ascii.tar.gz
N11.4471.G0.V1.ascii.tar.gz
N11.4656.G0.V1.ascii.tar.gz
N11.6515.G0.V1.ascii.tar.gz

666 per tarfile

20050526

G1

Individual orders, single exposures, sky subtracted (tarballs are 16-25MB). Note that these are the 2nd version release of the sky subtracted spectra. The sky subtraction is more robust, and these spectra should be used in preference to the previous vesion, V1.

ASCII

N11.3958.G1.V2.ascii.tar.gz
N11.4124.G1.V2.ascii.tar.gz
N11.4297.G1.V2.ascii.tar.gz
N11.4471.G1.V2.ascii.tar.gz
N11.4656.G1.V2.ascii.tar.gz
N11.6515.G1.V2.ascii.tar.gz

666 per tarfile

20050526

G2

Co-added spectra merged together (20MB)  IMPORTANT - SEE NOTE BELOW

ASCII

N11.G2.V1.tar.gz

111

20050526

G3

Normalised orders, merged together (20MB) IMPORTANT - SEE NOTE BELOW

ASCII

N11.G3.V1.tar.gz

111

20050526

UVES

Supplemenatary UVES spectra of extra stars – observed with UVES during a different observing campaign by Danny Lennon (contact I. Hunter for more details of the particular stars – presented in Hunter et al. A&A, submitted, July 2006).

ASCII

N11_UVES_DATA.tar.gz

 

20060727

 

NGC2004 (116 stars observed with MEDUSA/GIRAFE:)

Details of stars and IDs from Evans et al. (2006) ; but note erratum Evans et al. (2007)
Finding chart available (fchart_2004.eps).

Product level

Details

Format

Download

No. Spectra

Released

G0

Individual orders, single exposures, no sky subtraction (tarballs are 16-25MB)

ASCII

NGC2004.3958.G0.V1.ascii.tar.gz
NGC2004.4124.G0.V1.ascii.tar.gz
NGC2004.4297.G0.V1.ascii.tar.gz
NGC2004.4471.G0.V1.ascii.tar.gz
NGC2004.4656.G0.V1.ascii.tar.gz
NGC2004.6515.G0.V1.ascii.tar.gz

696 per tarfile

20050526

G1

Individual orders, single exposures, sky subtracted (tarballs are 16-25MB). Note that these are the 2nd version release of the sky subtracted spectra. The sky subtraction is more robust, and these spectra should be used in preference to the previous vesion, V1.

ASCII

NGC2004.3958.G1.V2.ascii.tar.gz
NGC2004.4124.G1.V2.ascii.tar.gz
NGC2004.4297.G1.V2.ascii.tar.gz
NGC2004.4471.G1.V2.ascii.tar.gz
NGC2004.4656.G1.V2.ascii.tar.gz
NGC2004.6515.G1.V2.ascii.tar.gz

696 per tarfile

20050526

G2

Co-added spectra merged together (20MB)  IMPORTANT - SEE NOTE BELOW

ASCII

NGC2004.G2.V1.tar.gz

116

20050526

G3

Normalised orders, merged together (20MB) IMPORTANT - SEE NOTE BELOW

ASCII

NGC2004.G3.V1.tar.gz

116

20050526








Notes
ALL of the ascii spectra have been correcrted to the heliocentric velocity frame<><>

When the tar files are unpacked, the individual spectra files will be labeled
cluster_wavelength_exposure_level_date_version.idnumber.fits : where exposure=exposure number (1-6), date=date of reduction, version=incremental number to allow re-release of corrected data, idnumber=running ID number in each field.

Example: N11_3958_01_G0_20040101_v01.099.fits <>is N11 lambda_central=3958, exposure 01 (of 6), Level=G0, date reduced= 20040101, version=v01, Star ID number=99
If there are any corrections in the reductions, then a full release of these files will be done, with a note as to what has changed, and the version number will increment.

The co-added spectra are simple sums of the sky-subtracted orders, which have not been checked for binarity. They are meant to be used as a first-look data product but should not be used for science purposes before the individual exposures have been checked for radial velocity variability. They are also based on the V1 sky subtraction whichhas been improved and released as V2.When consortia members do produce Vrad checked and corrected spectra, email me and I will make them available in the archive as a Level 4 product.