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J/A+A/501/553    Equivalent widths of IC 2602 & IC 2391 stars   (D'Orazi+, 2009)

Chemical composition of the young open clusters IC 2602 & IC 2391. D'Orazi V., Randich S. <Astron. Astrophys. 501, 553 (2009)> =2009A&A...501..553D
ADC_Keywords: Clusters, open ; Abundances Keywords: stars: abundances - open clusters and associations: individual: IC 2602, IC 2391 Abstract: Galactic open clusters have been long recognized as one of the best tools to investigate the chemical content of Galactic disk and its time evolution. In the last decade, many efforts have been directed to chemically characterize the old and intermediate age population; surprisingly, the chemical content of the younger and close counterpart remains largely undetermined. In this paper we present the abundance analysis of a sample of 15 G/K members of the young pre-main sequence clusters IC 2602 and IC 2391. Along with IC 4665, these are the first pre-main sequence clusters for which a detailed abundance determination has been carried out so far. Description: We analyzed high-resolution, high S/N spectra acquired with different instruments (UVES and CASPEC at ESO, and the echelle spectrograph at CTIO), using MOOG and equivalent width measurements. Along with metallicity ([Fe/H]), we measured NaI, SiI, CaI, TiI and TiII, and NiI abundances. Stars cooler than ∼5500 show lower CaI, TiI, and NaI than warmer stars. By determining TiII abundances, we show that, at least for Ti, this effect is due to NLTE and over-ionization. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file stars.dat 63 15 Sample stars tableew.dat 111 91 Equivalent widths of sample stars (tables 6 & 7 of the paper)
See also: J/A+AS/126/81 : IC 2602 VRI photometry (Foster+ 1997) J/A+AS/126/357 : Members of IC 2391 (Rolleston+ 1997) J/A+A/372/862 : Lithium abundances in IC 2602 and IC 2391 (Randich+, 2001) J/ApJS/134/103 : Low-mass members of IC 2391 (Barrado y Navascues+, 2001) J/MNRAS/355/959 : Proper motions of IC 2391 possible members (Dodd+, 2004) J/A+A/430/287 : XMM observations of IC 2391 stars (Marino+, 2005) J/A+A/461/509 : Membership and spectroscopy of IC 2391 (Platais+, 2007) Byte-by-byte Description of file: stars.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Name Star name 8- 9 I2 h RAh Simbad Hour of Right Ascension (J2000.0) 11- 12 I2 min RAm Simbad Minute of Right Ascension (J2000.0) 14- 17 F4.1 s RAs Simbad Second of Right Ascension (J2000.0) 19 A1 --- DE- Simbad Sign of the Declination (J2000.0) 20- 21 I2 deg DEd Simbad Degree of Declination (J2000.0) 23- 24 I2 arcmin DEm Simbad Arcminute of Declination (J2000.0) 26- 27 I2 arcsec DEs Simbad Arcsecond of Declination (J2000.0) 31- 35 F5.2 mag Bmag ? Simbad B band magnitude 37- 41 F5.2 mag Vmag Simbad V band magnitude 43- 44 A2 --- SpType Simbad MK spectral type 46- 63 A18 --- SName Simbad name
Byte-by-byte Description of file: tableew.dat
Bytes Format Units Label Explanations
1- 8 F8.3 0.1nm Lambda Wavelength 10- 13 A4 --- El Element 15- 20 F6.3 --- loggf Oscillator strengths 22- 26 F5.1 0.1nm EW0 Sun equivalent width 28- 32 F5.1 0.1nm EW1 ?=99.9 R1 ([RSP95] 1) equivalent width 34- 38 F5.1 0.1nm EW2 ?=99.9 R14 ([RSP95] 14) equivalent width 40- 44 F5.1 0.1nm EW3 ?=99.9 R15 ([RSP95] 15) equivalent width 46- 50 F5.1 0.1nm EW4 ?=99.9 R66 ([RSP95] 66) equivalent width 52- 56 F5.1 0.1nm EW5 ?=99.9 R70 ([RSP95] 70) equivalent width 58- 61 F4.1 0.1nm EW6 ?=99.9 R92 ([RSP95] 92) equivalent width 63- 67 F5.1 0.1nm EW7 ?=99.9 R95 ([RSP95] 95) equivalent width 69- 73 F5.1 0.1nm EW8 ?=99.9 W79 (Cl* IC 2602 W 79) equivalent width 75- 78 F4.1 0.1nm EW9 ?=99.9 VXR3 (VXR PSPC 3) equivalent width 80- 83 F4.1 0.1nm EW10 ?=99.9 VXR31 (VXR PSPC 31) equivalent width 85- 89 F5.1 0.1nm EW11 ?=99.9 VXR67 (VXR PSPC 67) equivalent width 91- 94 F4.1 0.1nm EW12 ?=99.9 VXR70 (VXR PSPC 70) equivalent width 96-100 F5.1 0.1nm EW13 ?=99.9 VXR72 (VXR PSPC 72) equivalent width 102-106 F5.1 0.1nm EW14 ?=99.9 VXR76a (VXR PSPC 76a) equivalent width 108-111 F4.1 0.1nm EW15 ?=99.9 SHJM2 (Cl* IC 2391 SHJM 2) equivalent width
Acknowledgements: V. D'Orazi, vdorazi(at)arcetri.astro.it
(End) Patricia Vannier [DS] 18-May-2009
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

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