2007ApJ...663..995V

Query : 2007ApJ...663..995V

2007ApJ...663..995V - Astrophys. J., 663, 995-1020 (2007/July-2)

Models for massive stellar populations with rotation.

VAZQUEZ G.A., LEITHERER C., SCHAERER D., MEYNET G. and MAEDER A.

Abstract (from CDS):

We present and discuss evolutionary synthesis models for massive stellar populations generated with the Starburst99 code in combination with a new set of stellar evolution models accounting for rotation. The new stellar evolution models were compiled from several data releases of the Geneva group and cover heavy-element abundances ranging from twice solar to one-fifth solar. The evolution models were computed for rotation velocities on the zero-age main sequence of 0 and 300 km/s and with the latest revision of stellar mass-loss rates. Since the mass coverage is incomplete, in particular at nonsolar chemical composition, our parameter study is still preliminary and must be viewed as exploratory. Stellar population properties computed with Starburst99 and the new evolution models show some marked differences in comparison with models obtained using earlier tracks. Since individual stars now tend to be more luminous and bluer when on the blue side of the Hertzsprung-Russell diagram, the populations mirror this trend. For instance, increases by factors of 2 or more are found for the light-to-mass ratios at ultraviolet to near-infrared wavelengths, as well as for the output of hydrogen-ionizing photons. If these results are confirmed once the evolution models have matured, recalibrations of certain star formation and initial mass function indicators will be required.

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Journal keyword(s): galaxies: individual (SMC) - galaxies: individual (LMC) - Galaxies: Individual: Messier Number: M31 - Galaxies: Individual: Alphanumeric: IC 10 - Galaxies: Stellar Content - Stars: Evolution

Simbad objects: 33

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Number of rows : 33
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 SK 7 s*b 00 45 46.9602407784 -73 39 54.697500036 11.763 12.614 12.636   11.77 B3Ia 24 0
4 SK 13 s*b 00 47 12.2164410744 -73 06 33.111710784   12.52 12.48     B1.5Ia 83 0
5 BBB SMC 259 s*b 00 47 38.7409708152 -73 07 48.851948496   12.17 12.24     B3Ia 43 0
6 SK 31 s*b 00 49 51.2735728512 -72 55 45.253625124   11.16 11.16     B2Ia 46 0
7 HD 5045 s*b 00 50 38.3868754296 -73 28 18.256667052   11.02 11.04     B1Ia+ 94 0
8 SK 46 s*b 00 51 23.1472439448 -72 07 20.916492744   12.49 12.59     B1Iab 32 0
9 AzV 104 s*b 00 51 38.4279675528 -72 48 06.081643404 12.053 13.064 13.226   13.57 B0.5Ia 43 0
10 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
11 SK 57 s*b 00 53 59.3747012712 -72 45 59.656787964 11.443 12.294 12.316   12.28 B2.5Ia 32 0
12 Cl* NGC 346 MPG 12 * 00 58 14.0865065520 -72 10 44.292892764   19.15 17.98   16.72 B0III 43 0
13 Cl* NGC 346 ELS 28 * 00 58 31.7543622456 -72 10 57.965696544 13.58 14.73 14.94   15.23 OC6Vz 33 0
14 SK 73 s*b 00 58 35.7838206672 -72 16 25.018020660 11.73 12.63 12.66   12.69 B1Iab-Ib 38 0
15 SK 76 s*b 00 58 55.6254525024 -72 32 08.467356804 11.64 12.65 12.75   12.84 BN0Ia 52 0
16 Cl* NGC 346 ELS 7 * 00 58 57.3961905528 -72 10 33.660822720 12.68 13.82 14.13   14.28 O4V((f+)) 61 0
17 AzV 216 EB* 00 58 59.1397025928 -72 44 34.125224352 13.11 14.15 14.32 14.49 14.56 B0IIw 43 0
18 Cl* NGC 346 W 3 * 00 59 00.7591806336 -72 10 28.171806492 11.46 12.61 12.80   13.63 O2III(f) 69 0
19 Cl* NGC 346 NMC 28 * 00 59 01.8187292184 -72 10 31.216864152   13.95 14.18     O5.5V((f+)) 38 0
20 Cl* NGC 346 NMC 17 * 00 59 06.7498587648 -72 10 41.262204828 13.05 14.19 14.33   14.60 O8V 26 0
21 RMC 18 s*b 01 00 06.8830919184 -72 13 57.371461032   11.7 11.5     B1Ia 76 0
22 SK 94 s*b 01 01 07.7622056304 -71 59 58.783358472   12.21 12.36 12.20   B1Ia 39 0
23 RMC 36 s*b 01 04 49.3494336384 -72 06 21.746153556 10.57 11.34 11.36     B3Ia 58 0
24 SK 119 s*b 01 04 58.0658804448 -72 39 59.515048656 11.57 10.12 12.34   12.23 B2Ia 34 0
25 SK 131 s*b 01 07 32.6015725776 -72 17 38.750615340 11.903 12.974 13.146     B0.7II 24 0
26 HD 7099 s*b 01 09 03.9542485824 -72 32 17.627859960   10.89 10.9     B2.5Ia 72 0
27 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
28 WDG 1 s*b 01 41 42.0683863272 -73 50 38.183979624   11.86 11.84     B1.5Ia 74 0
29 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
30 NGC 3293 OpC 10 35 50.3 -58 14 04           ~ 327 0
31 NGC 4755 OpC 12 53 39.2 -60 22 07           ~ 300 0
32 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
33 NAME Local Group GrG ~ ~           ~ 9325 0

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