Access to Astronomical Catalogues

J/A+A/543/A75    Near-IR spectra of LMC globular clusters   (Lyubenova.+, 2012)
Integrated J- and H-band spectra of globular clusters in the LMC:
implications for stellar population models and galaxy age dating.
    Lyubenova. M., Kuntschner H., Rejkuba M., Silva D.R., Kissler-Patig M.,
    Tacconi-Garman L.E.
   <Astron. Astrophys. 543, A75 (2012)>
   =2012A&A...543A..75L
ADC_Keywords: Magellanic Clouds; Clusters, globular; Spectra, infrared

Keywords: Magellanic Clouds - galaxies: star clusters - stars: carbon


Abstract:
    The rest-frame near-IR spectra of intermediate age (1-2Gyr) stellar
    populations are dominated by carbon based absorption features offering
    a wealth of information. Yet, spectral libraries that include the
    near-IR wavelength range do not sample a sufficiently broad range of
    ages and metallicities to allow for accurate calibration of stellar
    population models and thus the interpretation of the observations.

    In this paper we investigate the integrated J- and H-band spectra of
    six intermediate age and old globular clusters in the Large Magellanic
    Cloud (LMC).

Description:
    Provided are spatially integrated J- and H-band spectra of LMC
    globular clusters in the wavelength range 1.15-1.34 and
    1.5-1.78-microns. The spectra are obtained using the IFU spectrograph
    SINFONI mounted on the VLT. A detailed description of the integration
    process can be found in the paper. The regions 1.21-1.236 and
    1.26-1.295 are severely affected by varying sky line residuals, thus
    the spectra are set to 0.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
clusters.dat      76        6   List of the 6 clusters observed.
n1754_j.dat       19     1312   J-band spectrum of NGC 1754
n1806_h.dat       19     1437   H-band spectrum of NGC 1806
n1806_j.dat       19     1312   J-band spectrum of NGC 1806
n2005_j.dat       19     1312   J-band spectrum of NGC 2005
n2019_h.dat       19     1437   H-band spectrum of NGC 2019
n2019_j.dat       19     1312   J-band spectrum of NGC 2019
n2162_h.dat       19     1437   H-band spectrum of NGC 2162
n2162_j.dat       19     1312   J-band spectrum of NGC 2162
n2173_h.dat       19     1437   H-band spectrum of NGC 2173
n2173_j.dat       19     1312   J-band spectrum of NGC 2173


See also:
  J/A+A/510/A19 : K-band spectra of 6 LMC globular clusters (Lyubenova+, 2010)


Byte-by-byte Description of file: clusters.dat

   Bytes Format Units   Label     Explanations

       1  A1    ---     J         [J] Existence of J-band spectrum (1)
       3  A1    ---     H         [H] Existence of H-band spectrum (1)
   5-  7  A3    ---     ---       [NGC]
   9- 12  I4    ---     NGC       NGC designation of the cluster
  15- 16  I2    h       RAh       Right Ascension J2000 (hours)
      17  A1    ---     ---       [:]
  18- 19  I2    min     RAm       Right Ascension J2000 (minutes)
      20  A1    ---     ---       [:]
  21- 25  F5.2  s       RAs       Right Ascension J2000 (seconds)
      27  A1    ---     DE-       Declination J2000 (sign)
  28- 29  I2    deg     DEd       Declination J2000 (degrees)
      30  A1    ---     ---       [:]
  31- 32  I2    arcmin  DEm       Declination J2000 (minutes)
      33  A1    ---     ---       [:]
  34- 37  F4.1  arcsec  DEs       Declination J2000 (seconds)
  39- 41  A3    ---     ---       [ESO]
  43- 52  A10   ---     ESO       ESO desgination of the cluster
  55- 59  A5    ---     ---       [2MASX]
  61- 76  A16   ---     2MASX     2MASX designation of the cluster

Note (1): the spectrum files are named "nNNNN_j.dat" and "nNNNN_h.dat"
     for the J-band and H-band respectively.


Byte-by-byte Description of file: n*

   Bytes Format Units   Label     Explanations

   1-  8  F8.6  um      lambda    Wavelength
  12- 19  F8.3  ---     Flux      Flux, in H or J band, normalized to its
                                   median value


Acknowledgements:
    Mariya Lyubenova, lyubenova(at)mpia.de
(End)           Mariya Lyubenova [MPIA], Patricia Vannier [CDS]    22-Jun-2012