Access to Astronomical Catalogues

← Click to display the menu
J/A+A/462/683       Velocities in SMC field of NGC 330   (Martayan+, 2007)

Effects of metallicity, star-formation conditions, and evolution in B and Be stars. II. Small Magellanic Cloud, field of NGC 330. Martayan C., Fremat Y., Hubert A.-M., Floquet M., Zorec J., Neiner C. <Astron. Astrophys., 462, 683-694 (2007)> =2007A&A...462..683M
ADC_Keywords: Magellanic Clouds ; Radial velocities ; Rotational velocities ; MK spectral classification ; Effective temperatures Keywords: stars: early-type - stars: emission-line, Be - galaxies: Magellanic Clouds - stars: fundamental parameters - stars: evolution - stars: rotation Abstract: We search for the effects of metallicity on B and Be stars in the Small and Large Magellanic Clouds (SMC and LMC) and in the Milky Way (MW), by extending our previous analysis of B and Be star populations in the LMC to the SMC. The rotational velocities of massive stars and the evolutionary status of Be stars are examined with respect to their environments. Spectroscopic observations of hot stars belonging to the young cluster SMC-NGC 330 and its surrounding region were obtained with the VLT-GIRAFFE facilities in MEDUSA mode. We determined fundamental parameters for B and Be stars with the GIRFIT code, taking the effect of fast rotation and the age of observed clusters into account. We compared the mean vsini obtained by spectral type- and mass-selection for field and cluster B and Be stars in the SMC with the one in the LMC and MW. Description: This work makes use of spectra obtained with the multifibre VLT-FLAMES/GIRAFFE spectrograph in Medusa mode (131 fibres) at medium resolution (R=6400) in setup LR02 (396.4-456.7 nm). Observations (ESO runs 72.D-0245A and 72.D-0245C) were carried out in the young cluster SMC-NGC330 and in its surrounding field, as part of the Guaranteed Time Observation programmes of the Paris Observatory (P.I.: F. Hammer). Spectra were obtained on October 21, 22, and 23, 2003 and September 9 and 10, 2004. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 128 198 Fundamental parameters for O, B, A stars in the SMC table3.dat 128 134 *Apparent fundamental parameters for Be stars in the SMC
Note on table3.dat: The last three lines correspond to emission-line objects which are not Be stars
See also: J/A+AS/134/489 : Be stars in MC young clusters (Keller+ 1999) Byte-by-byte Description of file: table[13].dat
Bytes Format Units Label Explanations
1- 13 A13 --- Star Star name (1) 15- 16 I2 h RAh Right ascension (J2000) 18- 19 I2 min RAm Right ascension (J2000) 21- 26 F6.3 s RAs Right ascension (J2000) 28 A1 --- DE- Declination sign (J2000) 29- 30 I2 deg DEd Declination (J2000) 32- 33 I2 arcmin DEm Declination (J2000) 35- 39 F5.2 arcsec DEs Declination (J2000) 41- 46 F6.3 mag Vmag ?=- EIS V magnitude 48- 52 F5.2 mag B-V ?=- EIS B-V colour index 54- 56 I3 --- S/N Signal-to-noise ratio 58- 62 I5 K Teff ? Effective temperature 64- 67 I4 K e_Teff ? rms uncertainty on Teff 69- 71 F3.1 [cm/s2] logg ? Gravity surface 73- 75 F3.1 [cm/s2] e_logg ? rms uncertainty on logg 77- 79 I3 km/s vsini ? Rotational velocity 81- 82 I2 km/s e_vsini ? rms uncertainty on vsini 84- 86 I3 km/s RV ? Radial velocity 88- 89 I2 km/s e_RV ? rms uncertainty on RV 91-100 A10 --- CFP MK spectral type determined from fundamental parameters (method 2) 102-108 A7 --- CEW MK spectral type determined from EW diagrams (method 1) 110-112 A3 --- Loc Localisation of cluster (2) 114 A1 --- Flag [#] # for star was pre-selected in our catalogue of emission line stars (unpublished) 116-119 I4 ---- K99 ? Keller et al., 1999, Cat. J/A+AS/134/489 number, Cl* NGC 330 KWBBE NNNN in Simbad 121-128 A8 --- SpSim Spectral type from SIMBAD
Note (1): Star names: SMC5_NNNNNN for EIS (Momany et al., 2001A&A...379..436M) except 2 stars labelled MHF[S61]NNNNN. Coordinates are taken from EIS catalogues, except for the two MHF stars. Note (2): Localisation of cluster as follows: cl0 = NGC 330 (0:56:19 -72:27:52) cl1 = H 86 170 (0:56:21 -72:21:12) cl2 = [BS95]78 (0:56:04 -72:20:12) cl3 = the association SMC ASS 39 (0:56:6 -72:18:00) cl4 = OGLE-SMC109 (0:57:29.8 -72: 15:51.9) cl5 = NGC299 (0:53:24.5 -72:11:49) corrected coordinates cl6 = NGC306 (0:54:15 -72:14:30) cl7 = H86 145 (0:53:37 -72:21:00) cl8 = OGLE-SMC99 (0:54:48.24 -72:27:57.8)
History: From electronic version of the journal References: Martayan et al., Paper I 2006A&A...452..273M
(End) Patricia Vannier [CDS] 11-Sep-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