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
|The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line|