Access to Astronomical Catalogues

← Click to display the menu
J/A+A/456/623     VLT-FLAMES survey of massive stars              (Evans+, 2006)

The VLT-FLAMES survey of massive stars: observations centered on the Magellanic Cloud clusters NGC 330, NGC 346, NGC 2004, and the N11 region. Evans C.J., Lennon D.J., Smartt S.J., Trundle C. <Astron. Astrophys., 456, 623-638 (2006)> =2006A&A...456..623E
ADC_Keywords: Magellanic Clouds ; Clusters, open ; Photometry ; Radial velocities Keywords: stars: early-type - stars: fundamental parameters - stars: emission-line, Be - binaries: spectroscopic - galaxies: Magellanic Clouds Abstract: We present new observations of 470 stars using the Fibre Large Array Multi-Element Spectrograph (FLAMES) instrument in fields centered on the clusters NGC 330 and NGC 346 in the Small Magellanic Cloud (SMC), and NGC 2004 and the N11 region in the Large Magellanic Cloud (LMC). A further 14 stars were observed in the N11 and NGC 330 fields using the Ultraviolet and Visual Echelle Spectrograph (UVES) for a separate programme. Spectral classifications and stellar radial velocities are given for each target, with careful attention to checks for binarity. In particular, we have investigated previously unexplored regions around the central LH9/LH10 complex of N11, finding ∼25 new O-type stars from our spectroscopy. We have observed a relatively large number of Be-type stars that display permitted Fe II emission lines. These are primarily not in the cluster cores and appear to be associated with classical Be-type stars, rather than pre main-sequence objects. The presence of the Fe II emission, as compared to the equivalent width of Hα, is not obviously dependent on metallicity. We have also explored the relative fraction of Be- to normal B-type stars in the field-regions near to NGC 330 and NGC 2004, finding no strong evidence of a trend with metallicity when compared to Galactic results. A consequence of service observations is that we have reasonable time-sampling in three of our FLAMES fields. We find lower limits to the binary fraction of O- and early B-type stars of 23 to 36%. One of our targets (NGC 346-013) is especially interesting with a massive, apparently hotter, less luminous secondary component. Description: The adopted photometry and astrometry for the targets in NGC 346 and NGC 330 is that from the initial ESO Imaging Survey (EIS) pre-FLAMES release by Momany et al. (2001A&A...379..436M). The N11 region was not covered by the EIS pre-FLAMES Survey and so we obtained 60s B and V images with the Wide Field Imager (WFI) at the 2.2-m Max Planck Gesellschaft (MPG)/ESO telescope, on 2003 April 04. NGC 2004 was observed in two of the EIS pre-FLAMES fields, LMC 33 and 34. At the time of the FLAMES observations a full EIS data release was not available for these fields, so the raw images were acquired from the ESO archive and reduced using the INT-WFC pipeline (also by Dr. M. Irwin). Objects: ----------------------------------------------------------- RA (2000) DE Designation(s) (files) ----------------------------------------------------------- 00 59 18.0 -72 10 48 NGC 346 = LHA 115-N 66A (table4) 00 56 18.7 -72 27 50 NGC 330 = Cl Kron 35 (table5) 04 57 16.2 -66 23 18 IC 2116 = LHA 120-N 11A (table6) 05 30 40.2 -67 17 14 NGC 2004 = KMHK 991 (table7) ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 164 116 NGC 346: observational parameters of target stars table5.dat 164 125 NGC 330: observational parameters of target stars table6.dat 164 124 N 11 : observational parameters of target stars table7.dat 164 119 NGC 2004: observational parameters of target stars table8.dat 197 105 Comparison of current classifications with published spectral types notes.dat 80 28 Individual notes
See also: J/A+A/437/467 : VLT-FLAMES survey of massive stars (Evans+, 2005) J/A+A/457/265 : VLT-FLAMES survey of massive Stars (Dufton+, 2006) J/A+A/466/277 : VLT-FLAMES survey of massive stars (Hunter+, 2007) Byte-by-byte Description of file: table[4567].dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Variable name (G1) 13 A1 --- n_Name [+] indicates a note in notes.dat 15- 25 A11 --- EIS EIS name 27- 28 I2 h RAh Right ascension (J2000) 30- 31 I2 min RAm Right ascension (J2000) 33- 37 F5.2 s RAs Right ascension (J2000) 39 A1 --- DE- Declination sign (J2000) 40- 41 I2 deg DEd Declination (J2000) 43- 44 I2 arcmin DEm Declination (J2000) 46- 50 F5.2 arcsec DEs Declination (J2000) 52- 56 F5.2 arcsec Rd ? Radial distance to the centre of the cluster 58- 62 F5.2 mag Vmag V magnitude 63 A1 --- n_Vmag [*] *: photometry from Parker et al. (1992, Cat. J/AJ/103/1205) 64- 68 F5.2 mag B-V B-V colour index 70- 86 A17 --- SpType MK spectral type (1) 88- 90 I3 km/s RV ? Radial velocity 91 A1 --- u_RV Uncertainty flag on RV 93- 94 I2 --- o_RV ? Number of lines used for RV determination 96-107 A12 --- Bin Binarity information 109-164 A56 --- Com Comments (2)
Note (1): -- in table6.dat, Classifications for N11-031 and N11-060 were taken from Walborn et al. (2000PASP..112...50W) and Walborn et al. (2004ApJ...608.1028W) respectively. -- in table7.dat, all spectral types are those of the authors, excepting NGC 2004-057 (Brey 45), taken from Smith et al. (1996MNRAS.281..163S) Note (2): Cross-references to identifications as follows: 2dFS NNNN = Evans et al. (2004, Cat. J/MNRAS/353/601) AzV NNN = Azzopardi & Vigneau (1975A&AS...22..285A, 1982A&AS...50..291A) KWB NNNN = Keller et al. (1999, Cat. J/A+AS/134/489), Cl* NGC NNNN KWBBE NNNN in Simbad MA93 NNNN = Meyssonnier & Azzopardi (1993, Cat. J/A+AS/102/451), [MA93] NNNN in Simbad MPG NNN = Massey et al. (1989, Cat. J/AJ/98/1305), Cl* NGC NNNN MPG NNN in Simbad NMC NN = Niemela et al. (1986, Cat. J/PASP/98/1133), Cl* NGC NNNN NMC NN in Simbad Sk NNN = Sanduleak (1968AJ.....73..246S) Arp NNN = Arp (1959AJ.....64..254A), Cl* NGC 330 ARP III-NNN in Simbad R74-ANNN = Robertson (1974A&AS...15..261R), Cl* NGC 2004 Rob ANNN in Simbad PNNNN = Parker et al. (1992, Cat. J/AJ/103/1205), PGMW NNNN in Simbad Brey NN = Breysacher (1981A&AS...43..203B) Walker N = Walker (1987PASP...99..179W), Cl* NGC 2004 WALK N in Simbad MHF NNNN = Martayan et al. (2006A&A...445..931M), Cl* NGC 2004 MHF NNNNNN in Simbad
Byte-by-byte Description of file: table8.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Variable name (G1) 14- 27 A14 --- OName Other name 29- 45 A17 --- SpType FLAMES MK spectral type 46- 72 A27 --- SpType1 Published MK spectral type with reference (1) 74-122 A49 --- SpType2 Published MK spectral type with reference (1) 124-155 A32 --- SpType3 Published MK spectral type with reference (1) 157-183 A27 --- SpType4 Published MK spectral type with reference (1) 185-197 A13 --- SpType5 Published MK spectral type with reference (1)
Note (1): References as follows: W77 = Walborn (1977ApJ...215...53W) FB80 = Feast & Black (1980MNRAS.191..285F) CJF85 = Carney et al. (1985AJ.....90.1196C) NMC = Niemela et al. (1986, Cat. J/PASP/98/1133) G87 = Garmany et al. (1987AJ.....93.1070G) MPG = Massey et al. (1989, Cat. J/AJ/98/1305) F91 = Fitzpatrick (1991PASP..103.1123F) P92 = Parker et al. (1992, Cat. J/AJ/103/1205) L93 = Lennon et al. (1993SSRv...66..169L) M95 = Massey et al. (1995ApJ...438..188M) G96 = Grebel et al. (1996A&A...311..470G) LG96 = classifications from Lennon, given by Grebel et al. (1996A&A...311..470G) HM00 = Heydari-Malayeri et al. (2000A&A...361..877H), who adopt identifications from Woolley (1963RGOB...66..263W) W00 = Walborn et al. (2000PASP..112...50W) L03 = Lennon et al. (2003A&A...398..455L) EH04 = Evans et al. (2004, Cat. J/MNRAS/353/601)
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Variable name (G1) 13- 80 A68 --- Note Test of the note
Global notes: Note (G1): Names are written: -- table4.dat = NGC 346-NNN, Cl* NGC 346 ELS NNN in Simbad -- table5.dat = NGC 330-NNN, Cl* NGC 330 ELS NNN in Simbad -- table6.dat = N11-NNN, [ELS2006] N11 NNN in Simbad -- table7.dat = NGC 2004-NNN, Cl* NGC 2004 ELS NNN in Simbad
History: From electronic version of the journal * 11-May-2007: Original files * 28-Jan-2008: 3 objects added in table4 (from author) (NGC 346-063, NGC 346-064, and NGC 346-065)
(End) Patricia Vannier [CDS] 27-Mar-2007
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

catalogue service

© UDS/CNRS

Contact