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J/A+A/479/141      Iz photometry, RV and EW(Li) in IC 4665       (Manzi+, 2008)
Detection of the lithium depletion boundary in the young open cluster IC 4665.
    Manzi S., Randich S., De Wit W.J., Palla F.
   <Astron. Astrophys., 479, 141-148 (2008)>
   =2008A&A...479..141M
ADC_Keywords: Clusters, open ; Photometry ; Radial velocities ;
              Equivalent widths
Keywords: open clusters and associations: individual: IC 4665 -
          stars: low-mass, brown dwarfs - stars: pre-main-sequence -
          stars: abundances

Abstract:
    The so-called lithium depletion boundary (LDB) provides a secure and
    independent tool for deriving the ages of young open clusters.

    In this context, our goal is to determine membership for a sample of
    147 photometrically selected candidates of the young open cluster
    IC 4665 and to use confirmed members to establish an age based on the
    LDB.

    Employing the FLAMES multi-object spectrograph on VLT/UT2, we have
    obtained intermediate-resolution spectra of the cluster candidates.
    The spectra were used to measure radial velocities and to infer the
    presence of the LiI 670.8nm doublet and Hα emission.

Description:
    Target stars were selected from different sources: Prosser (1993, Cat.
    J/AJ/105/1441), Giampapa et al. (1998ApJ...501..624G), de Wit et al.
    (2006, Cat. J/A+A/448/189), and a literature search on SIMBAD.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        91      147   The 147 candidate members of IC 4665 observed
                              with FLAMES
table2.dat        32       39   Stars confirmed as members


See also:
 J/AJ/105/1441 : IC 4665 photometry and proper motions (Prosser 1993)
 J/A+A/448/189 : IzJHK photometry of IC4665 (de Wit+, 2006)
 J/A+A/475/539 : BV photometry and Li abundances in NGC 3960 (Prisinzano+, 2007)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     MRD       [1/147] Sequential number, Cl* IC 4665 MRD NNN
   5-  6  I2    h       RAh       Right ascension (J2000)
   8-  9  I2    min     RAm       Right ascension (J2000)
  11- 16  F6.3  s       RAs       Right ascension (J2000)
      18  A1    ---     DE-       Declination sign (J2000)
  19- 20  I2    deg     DEd       Declination (J2000)
  22- 23  I2    arcmin  DEm       Declination (J2000)
  25- 29  F5.2  arcsec  DEs       Declination (J2000)
      31  I1    ---     Ref       Data source (1)
  33- 45  A13   ---     Name      Name (2)
      46  A1    ---     n_Name    [*] Note on Name (3)
  47- 52  F6.3  mag     Imag      ?=- CFHT Mould Im magnitude
  54- 59  F6.3  mag     zmag      ?=- CFHT z magnitude
  61- 66  F6.1  km/s    RV        ?=- Radial velocity
  67- 73  A7    ---     n_RV      Note about variability and binarity
  75- 78  F4.1  km/s    e_RV      ?=- rms uncertainty on RV
  80- 81  A2    ---     Li        [YN? ] Presence (Y) or lack (N) of the Li line (4)
  83- 88  A6    ---     Halpha    [em/abs ] Presence of the Halpha line in
                                         absorption or emission
  90- 91  A2    ---     Mm        [YN?] Membership flag

Note (1): Data source as follows:
      1 = only in Prosser (1993, Cat. J/AJ/105/1441) or
          Giampapa et al. (1998ApJ...501..624G)
      2 = from Prosser (1993, Cat. J/AJ/105/1441) and
          de Wit et al. (2006, Cat. J/A+A/448/189)
      3 = only in de Wit et al. (2006, Cat. J/A+A/448/189)
      4 = not in Prosser (1993, Cat. J/AJ/105/1441) nor in de Wit et al.
          (2006, Cat. J/A+A/448/189) because brighter than the I limit
          of that paper
      9 = from IRAS or Luyten
Note (2): Conventions for Names:
     PNNN = Cl* IC 4665 P NNN in Simbad
     GPF98-R05 = [GPF98] R05  in Simbad
     K057 = IC 4665 57  in Simbad
     A.NN.NN.NNNN = not in Simbad
     D.NN.NN.NNN  = not in Simbad
Note (3): In the original table, objects No 38 and 40 have P155 in this
     column, but none of them correspond to Cl* IC 4665 P 155, then the
     Name have been taking out of the table by CDS (19-Jun-2008)
Note (4): "?" means that the S/N did not allow to confirm or reject the
     presence of Li.


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     MRD       [1/147] Sequential number, Cl* IC 4665 MRD NNN
   5- 10  F6.3  mag     Imag      ?=- Mould Im magnitude
  12- 16  F5.3  mag     I-z       ?=- Mould Im-z colour index
  18- 22  F5.3  mag     Ic-Ks     ?=- Cousins-Johnson Ic-Ks colour index (1)
  24- 26  I3    0.1nm   EW(Li)    ?=- Li equivalent width
  28- 29  I2    0.1nm   e_EW(Li)  ?=- rms uncertainty on EW(Li)
  31- 32  A2    ---     n_EW(Li)  [Y? ] Note on EW(Li) when no measurement

Note (1): The values for Ic are converted from Im.



History:
  * 11-Mar-2008: from electronic version of the journal
  * 19-Jun-2008: see Note (3) above.
(End)                                      Patricia Vannier [CDS]    11-Mar-2008