Access to Astronomical Catalogues

← Click to display the menu
J/A+A/506/1277   Modelisation of Magellanic Cloud C/O stars (Groenewegen+, 2009)

Luminosities and mass-loss rates of SMC and LMC AGB stars and red supergiants. Groenewegen M.A.T., Sloan G.C., Soszynski I., Petersen E.A. <Astron. Astrophys. 506, 1277 (2009)> =2009A&A...506.1277G
ADC_Keywords: Magellanic Clouds ; Stars, giant ; Stars, supergiant ; Mass loss Keywords: stars: AGB and post-AGB - stars: mass loss - Magellanic Clouds Abstract: Mass loss is one of the fundamental properties of Asymptotic Giant Branch (AGB) stars, and through the enrichment of the interstellar medium, AGB stars are key players in the life cycle of dust and gas in the universe. However, a quantitative understanding of the mass-loss process is still largely lacking, particularly its dependence on metallicity. To investigate the relation between mass loss, luminosity and pulsation period for a large sample of evolved stars in the Small and Large Magellanic Cloud. Description: Dust radiative transfer models are presented for 101 carbon stars and 86 oxygen-rich evolved stars in the Magellanic Clouds for which 5-35um Spitzer IRS spectra are available. The spectra are complemented with available optical and infrared photometry to construct the spectral energy distribution. A minimisation procedure is used to fit luminosity, mass-loss rate and dust temperature at the inner radius. Different effective temperatures and dust content are also considered. Periods from the literature and from new OGLE-III data are compiled and derived. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1c.dat 157 101 C-star sample: identifiers and pulsation periods table2o.dat 157 86 O-star sample: identifiers and pulsation periods table3c.dat 91 101 Fit results for the C-star sample table4m.dat 109 172 Fit results for the O-star sample
See also: J/ApJ/348/98 : LMC AGB stars IRAS fluxes (Reid+ 1990) J/A+A/377/945 : Variability and spectra of LMC giants (Cioni+ 2001) J/AJ/129/1465 : Spectroscopy of red giants in the LMC bar (Cole+, 2005) J/AJ/131/2514 : Radial velocities of red giants in the SMC (Harris+, 2006) J/A+A/480/379 : Abundances of 59 red giants in LMC (Pompeia+, 2008) Byte-by-byte Description of file: table1c.dat table2o.dat
Bytes Format Units Label Explanations
1- 62 A62 --- Names Various identifiers 64- 73 F10.6 deg RAdeg Right ascension, in decimal degrees (J2000) 75- 84 F10.6 deg DEdeg Declination, in decimal degrees (J2000) 87- 97 A11 --- Ident Identifier in Tables and Plots 102-120 A19 d Per Pulsation Period(s) 124-137 A14 --- Ref Reference code 140-144 F5.3 mag Amp1 ? Pulsation Amplitude 145 A1 --- --- [(] 146 A1 --- n_Amp1 [RIKVB] Filter for Amp1 147 A1 --- --- [)] 148 A1 --- --- [,] 150-153 F4.2 mag Amp2 ? Pulsation Amplitude 155 A1 --- --- [(] 156 A1 --- n_Amp2 [RK] Filter for Amp2 157 A1 --- --- [)]
Byte-by-byte Description of file: table3c.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Ident Identifier 15- 18 I4 K Teff Effective temperature 23- 27 A5 --- Type Identification of type of dust (1) 33- 37 I5 solLum Lum Luminosity in solar units 41- 48 E8.2 solMass/yr dM/dt Mass-loss rate 52 I1 --- n_dM/dt [0/1] Code (1=free param; 0=fixed value) 56- 59 I4 K Tc Temperature at inner radius 63 I1 --- n_Tc [0/1] Code (1=free param; 0=fixed value) 67- 73 F7.1 --- Router Outer radius (relative to inner radius) 77- 82 F6.3 --- tau1 Optical depth at 0.55 micron 87- 91 F5.3 --- tau2 Optical depth at 11.3 micron
Note (1): combination of amorphous carbon (AMC) and silicon carbide (SiC) (α-SiC and β-SiC). The number refers to the percentage of SiC.
Byte-by-byte Description of file: table4m.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Ident Identifier 15- 17 A3 --- SpType MK spectral type 25- 45 A21 --- Type Identification of type of dust (1) 49- 55 I7 solLum Lum Luminosity in solar units 59- 66 E8.2 solMass/yr dM/dt Mass-loss rate 70 I1 --- n_dM/dt [0/1] Code (1=free param; 0=fixed value) 74- 77 I4 K Tc Temperature at inner radius 81 I1 --- n_Tc [0/1] Code (1=free param; 0=fixed value) 85- 91 F7.1 --- Router Outer radius (relative to inner radius) 95-100 F6.3 --- tau1 Optical depth at 0.55 micron 105-109 F5.3 --- tau2 Optical depth at 10 micron
Note (1): For every star there are two lines, for "laboratory silicates" and "astronomical silicates". The first line provides the best fitting one.
Acknowledgements: Martin Groenewegen, marting(at)oma.be
(End) Martin Groenewegen [ROB], Patricia Vannier [CDS] 27-Aug-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

catalogue service

© UDS/CNRS

Contact