1999A&A...342..480S


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.19CEST15:07:15

1999A&A...342..480S - Astronomy and Astrophysics, volume 342, 480-491 (1999/2-2)

Physics of accretion onto young stars. III. Comparisons with observations.

SIESS L., FORESTINI M. and BERTOUT C.

Abstract (from CDS):

We present new evolutionary sequences for long lasting accreting low-mass (0.1M≤M≤2.5M) pre-main sequence stars. The calculations, performed for two different mass accretion rates, show that accretion accelerates the evolution of the star. The star has a smaller radius and goes down its convective track faster than in a standard scheme. Consequently, the age of a star, as given by its location on the Hertzsprung-Russell diagram, is lower than that of a non-accreting star. We discuss 2H and 7Li burning and show how accretion affects the surface abundance of these elements. Notably, we point out that deuterium must be present at the surface of accreting intermediate-mass stars. Finally, we estimate the age, mass and radius of a sample of T Tauri stars located in the Taurus Auriga star forming region.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - stars: abundances - stars: evolution - stars: fundamental parameters - stars: pre-main sequence

Simbad objects: 51

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Number of rows : 51

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* V679 Tau TT* 03 52 02.2217462456 +24 39 47.690003665   13.57 11.41 11.89 10.77 K5e 117 0
2 HD 283447 Or* 04 14 12.9232870093 +28 12 12.378540314 13.17 12.07 10.68 9.45 8.67 K3Ve 386 0
3 V* FM Tau Or* 04 14 13.5839505100 +28 12 49.166941548 14.44   13.80 13.64   M0/2e 196 0
4 V* V1098 Tau Or* 04 14 47.9897419517 +27 52 34.232647358   14.08 11.73 10.95   M1 108 0
5 EM* LkCa 4 Or* 04 16 28.1070192558 +28 07 35.732032828   13.96 12.78 11.825   K7:Ve 154 0
6 V* V1069 Tau Or* 04 18 51.7034617249 +17 23 16.579842927   13.32 12.22 12.22 10.944 K7e 107 0
7 V* BP Tau Or* 04 19 15.8342975037 +29 06 26.929456808   13.13 12.12 11.89   K5/7Ve 616 0
8 WK81 1 TT* 04 19 26.2671630797 +28 26 14.259129092   14.81 13.04 12.240   K7 198 1
9 V* V1070 Tau Or* 04 19 41.2688488305 +27 49 48.151086734   13.75 12.25 11.14   M0 136 0
10 V* DE Tau Or* 04 21 55.6346296353 +27 55 06.184221341 15.18 15.13 13.80     M3Ve 231 0
11 V* RY Tau Or* 04 21 57.4132838427 +28 26 35.533990877 10.82 10.34 9.30 9.67 8.87 K1IV/Ve 662 1
12 HD 283572 Or* 04 21 58.8482823933 +28 18 06.511915195   9.80 9.03 9.14   G5IVe 272 0
13 V* T Tau TT* 04 21 59.4323326335 +19 32 06.439974179   11.22 10.12 9.80   K0IV/Ve 1339 1
14 V* IP Tau Or* 04 24 57.0823478325 +27 11 56.543062579   14.50   12.46   M0:Ve 201 0
15 V* DF Tau Or* 04 27 02.7917481241 +25 42 22.456361256 11.97 12.25 11.42 10.31 9.14 M3Ve 466 1
16 V* DG Tau Or* 04 27 04.6913654419 +26 06 16.041555299 13.57 13.97 10.50 12.28   K6Ve 950 1
17 V* DH Tau Or* 04 29 41.5520056304 +26 32 58.123761109 15.14 14.62 13.10 13.01   M1Ve 275 0
18 V* UX Tau A TT* 04 30 03.9931880444 +18 13 49.476948664   12.92 11.15     K2Ve 333 0
19 V* UX Tau Or* 04 30 03.99626 +18 13 49.4355 11.23 11.84 10.80 9.83 9.05 K2Ve+M1Ve 319 0
20 V* FX Tau Or* 04 30 29.618064 +24 26 45.02724   15.18 13.61 13.21   M4 144 0
21 V* DK Tau A * 04 30 44.2409691803 +26 01 24.730398215           K5Ve 250 0
22 V* DK Tau Or* 04 30 44.243376 +26 01 24.65328 13.32 14.59 13.05 12.08   K7e+K7e 303 0
23 HBC 392 Or* 04 31 27.1756563044 +17 06 24.745482804   13.71       K5e 70 0
24 V* HL Tau Or* 04 31 38.471952 +18 13 58.08504   15.89 14.49 14.39   K5 1249 0
25 IRAS 04287+1807 mul 04 31 38.8 +18 13 57           ~ 796 0
26 L 1551-51 Or* 04 32 09.2838548075 +17 57 22.695083303   13.29       K7e 120 0
27 V* V827 Tau TT* 04 32 14.5731257511 +18 20 14.719337994   14.00 12.63 12.35   K7Ve 159 0
28 V* V826 Tau TT* 04 32 15.8394065935 +18 01 38.751126168   13.51 12.074   10.312 K7.0 167 0
29 V* GG Tau Or* 04 32 30.3318954228 +17 31 40.834888327 14.84 14.78 13.40 11.54   M0e+M2.0e 667 1
30 V* GH Tau Or* 04 33 06.2181025969 +24 09 33.628411049     13.20 12.59   M3Ve 172 0
31 V* V830 Tau TT* 04 33 10.0299730541 +24 33 43.255853678   13.91 12.08 11.30   M0-1 179 1
32 V* GI Tau Or* 04 33 34.0608378045 +24 21 17.067391746 14.34   13.70 12.15 11.06 K5Ve 261 1
33 V* GK Tau Or* 04 33 34.5626781676 +24 21 05.854541262 15.50   13.00 12.02 10.62 K7:Ve 281 0
34 V* DL Tau Or* 04 33 39.0766866461 +25 20 38.097973550 14.04 14.59 13.40 11.85 10.89 K7Ve 294 0
35 V* CI Tau Or* 04 33 52.0144455735 +22 50 30.093741884 14.97 15.09 13.80     K4IVe 287 1
36 V* AA Tau Or* 04 34 55.4222683130 +24 28 53.038273587 13.14 13.34 12.20     K5Ve 649 0
37 V* DN Tau Or* 04 35 27.3776240781 +24 14 58.908761629 13.56 12.88 11.50 11.79   M1:Ve 357 0
38 CoKu HP Tau G2 Or* 04 35 54.1553246504 +22 54 13.404170652 13.63 12.31 11.158 10.14 9.172 G2e 118 0
39 V* DO Tau Or* 04 38 28.5882167490 +26 10 49.472067634 12.78 13.44 12.30 13.01   M1Ve 327 1
40 V* VY Tau Or* 04 39 17.4208176970 +22 47 53.361809753     9.00     M0Ve 183 0
41 EM* LkCa 15 Or* 04 39 17.7912813350 +22 21 03.387667491   13.01 12.03 11.61   K5:Ve 581 1
42 V* IW Tau Or* 04 41 04.7179844751 +24 51 06.034940625   14.25 12.595 11.65 10.504 K7Ve 109 0
43 Haro 6-37 Or* 04 46 58.97952 +17 02 38.1948           K7e+M1e 105 0
44 V* DR Tau Or* 04 47 06.2152696011 +16 58 42.814250257 12.03 11.86 10.50 12.19   K5Ve 484 0
45 V* DS Tau Or* 04 47 48.5954846337 +29 25 11.189809829 13.11 13.16 12.30 12.37 10.80 K4Ve 219 0
46 V* GM Aur Or* 04 55 10.9813656049 +30 21 59.375978047 14.59 14.22 13.10     K3Ve 567 0
47 HD 282630 Or* 04 55 36.9698052301 +30 17 55.100440086   12.17 11.12 10.55   K0Ve 154 0
48 V* SU Aur Or* 04 55 59.3861369488 +30 34 01.499800471   10.33 9.30 9.17   G2IIIne 546 0
49 V* V397 Aur Or* 04 56 02.0261376554 +30 21 03.635056925   13.07 11.72 11.25   K7e 155 0
50 V* V836 Tau TT* 05 03 06.5988350466 +25 23 19.604482133   15.00 13.49 13.48   K7/M0Ve 213 0
51 V* RW Aur TT* 05 07 49.5662483 +30 24 05.177426   10.86 9.60 9.95   K1/5e+K5e 729 0

    Equat.    Gal    SGal    Ecl

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2021.04.19-15:07:15

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