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J/A+A/306/134                            Liller 1              (Ortolani+, 1996)
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NTT V, I and Gunn z colour-magnitude diagrams of Liller 1: a globular cluster
as metal-rich as the inner bulge stellar population ?
     Ortolani S., Bica E., Barbuy B.
    <Astron. Astrophys. 306, 134 (1996)>
    =1996A&A...306..134O      (SIMBAD/NED BibCode)
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ADC_Keywords:Clusters, globular ; Photometry, VRI
Keywords: Galaxy: globular clusters: individual: Liller 1 - stars: HR diagram -
          stars: abundances

Description:
    We carried out VRI and Gunn z observations of the obscured globular
    cluster Liller 1. The cluster is so reddened (A_V_=~9.0) that it is
    at the detection limit in V. The RGB in I vs. (I-z) shows a strong
    curvature. Recalling that the nearly solar metallicity globular clusters
    NGC 6553 and NGC 6528 present similar blanketing effects only in the
    visible bandpasses, we conclude that Liller 1 is considerably more
    metal-rich than these clusters. The CMD comparison of Liller 1
    with the inner bulge field around it (located =~5deg from the nucleus),
    suggests that the cluster is as metallic as the most metallic fraction
    of this inner bulge population. Similarly deep I and z observations
    at =~0.5deg away from Liller 1, at the nominal position of Grindlay 1
    do not reveal any cluster.

Objects:
    -----------------------------------------------
      RA  (2000)  DE       Names
    -----------------------------------------------
    17 33 24.0  -33 23 16  Cl Liller 1 = C 1730-333
    -----------------------------------------------

File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table2             64     3168   I, Gunn z photometry of Liller1
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Byte-by-byte Description of file: table2
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   Bytes Format  Units   Label    Explanations
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   6-  9  I4     ---     Number   + Sequence number
  14- 20  F7.2   pix     Xpos     X pixel coordinate
  25- 31  F7.2   pix     Ypos     Y pixel coordinate
  37- 42  F6.3   mag     Imag     I magnitudes
  48- 53  F6.3   mag     Gmag     Gunn z instrumental magnitudes
  58- 64  F7.3   pix     RDist    Radial distance to cluster center
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Courtesy: Barbuy B. <BARBUY@mesioa.obspm.fr>
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(End)                                             Simona Mei [CDS]   05-Jul-1995