2006A&A...456.1045B


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.14CET08:41:23

2006A&A...456.1045B - Astronomy and Astrophysics, volume 456, 1045-1068 (2006/9-4)

Modeling of PMS Ae/Fe stars using UV spectra.

BLONDEL P.F.C. and TJIN A DJIE H.R.E.

Abstract (from CDS):

Spectral classification of HAeFe stars, based on visual observations, may lead to ambiguous conclusions. We aim to reduce these ambiguities by using UV spectra for the classification of these stars, because the rise of the continuum in the UV is highly sensitive to the stellar spectral type of A/F-type stars. We analyse the low-resolution UV spectra in terms of a 3-component model, that consists of spectra of a central star, of an optically-thick accretion disc, and of a boundary-layer between the disc and star. The disc-component was calculated as a juxtaposition of Planck spectra, while the 2 other components were simulated by the low-resolution UV spectra of well-classified standard stars (taken from the IUE spectral atlases). The hot boundary-layer shows strong similarities to the spectra of late-B type supergiants (see Appendix A). We modeled the low-resolution UV spectra of 37 HAeFe stars. Each spectral match provides 8 model parameters: spectral type and luminosity-class of photosphere and boundary-layer, temperature and width of the boundary-layer, disc-inclination and circumstellar extinction. From the results of these analyses, combined with available theoretical PMS evolutionary tracks, we could estimate their masses and ages and derive their mass-accretion rates. For a number of analysed PMS stars we calculated the corresponding SEDs and compared these with the observed SEDs. All stars (except BPC) show indications of accretion, that affect the resulting spectral type of the stellar photosphere. Formerly this led to ambiguities in classificaton of PMS stars as the boundary-layer was not taken into consideration. We give evidence for an increase of the mass-accretion rate with stellar mass and for a decreases of this rate with stellar age.

Abstract Copyright:

Journal keyword(s): stars: pre-main sequence - accretion, accretion disks

CDS comments: Appendix C Associations Ori T4,Tau T4 and Aur T1 not in Simbad.

Simbad objects: 157

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Number of rows : 157

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 232121 Al* 00 10 42.0679098681 +54 53 29.360355721   9.67       B5+K3III 171 0
2 * bet Hyi PM* 00 25 45.07036 -77 15 15.2860 3.52 3.41 2.79 2.28 1.94 G0V 530 0
3 * bet Cet PM* 00 43 35.37090 -17 59 11.7827 3.90 3.02 2.01 1.29 0.78 G9.5IIICH-1 495 0
4 * mu. And PM* 00 56 45.2121113 +38 29 57.638044 4.14 3.99 3.87 3.72 3.64 A6V 205 0
5 V* U Cep Al* 01 02 18.4416064122 +81 52 32.080928443   6.92 6.92     G2III:+B8/9 455 0
6 HD 10307 SB* 01 41 47.1431421954 +42 36 48.443521767 5.69 5.58 4.96 4.43 4.10 G1V 460 0
7 * 107 Psc PM* 01 42 29.7634932653 +20 16 06.660242064 6.57 6.08 5.24 4.55 4.12 K1V 492 0
8 * alf Hyi PM* 01 58 46.1946699 -61 34 11.494778 3.33 3.13 2.84 2.55 2.39 F0IV 199 0
9 * 53 Cas * 02 03 00.1867607539 +64 23 24.064160879 5.69 5.930 5.614     A0Ib 103 0
10 V* RZ Cas Al* 02 48 55.5096536172 +69 38 03.441544807   6.40 6.26     A3V 437 0
11 * 16 Per dS* 02 50 35.0597875 +38 19 07.108023   4.57   4.0   F2III 112 0
12 HD 20346 * 03 17 45.7550548653 +39 17 00.146769245   6.005 5.967     A2IV 43 0
13 * kap01 Cet BY* 03 19 21.6963205 +03 22 12.715139 5.71 5.52 4.85 4.27 3.91 G5V 811 0
14 * alf Per V* 03 24 19.3700924 +49 51 40.245455 2.64 2.27 1.79     F5Ib 791 2
15 HD 21071 Pu* 03 25 57.3816680230 +49 07 14.733158780 5.53 6.02 6.09     B7V 145 0
16 HD 21291 s*b 03 29 04.1289203454 +59 56 25.213264523 4.40 4.63 4.22 3.84 3.46 B9Ia 279 1
17 * eps Eri BY* 03 32 55.8449634 -09 27 29.731165 5.19 4.61 3.73 3.00 2.54 K2V 1659 1
18 * del Per Be* 03 42 55.5042561 +47 47 15.174633 2.38 2.89 3.01 2.99 3.10 B5III 301 0
19 * 17 Tau Be* 03 44 52.5368818 +24 06 48.011217 3.19 3.59 3.70 3.71 3.80 B6IIIe 371 1
20 * 18 Tau PM* 03 45 09.7395444345 +24 50 21.349504233 5.21 5.57 5.64 5.61 5.68 B8V 252 0
21 * eta Tau Be* 03 47 29.0765529 +24 06 18.488347 2.44 2.78 2.87 2.84 2.88 B7III 508 1
22 * 27 Tau SB* 03 49 09.7425852 +24 03 12.300277 3.18 3.54 3.63 3.62 3.68 B8III 359 0
23 HD 275874 * 03 49 28.2430946311 +39 07 05.813329266 12.5 10.18 9.77     A4 4 0
24 V* XY Per Ae* 03 49 36.32389 +38 58 55.6050 12.12 9.47 9.80 8.70 8.40 A2II+B6 140 0
25 LDN 1449 DNe 03 53.3 +37 39           ~ 16 0
26 * 45 Tau PM* 04 11 20.2823319709 +05 31 22.987536222   6.057 5.699 5.487 5.284 F4V 219 0
27 * 51 Tau SB* 04 18 23.2088106790 +21 34 45.202215421   5.945 5.631     F0V 245 0
28 HD 27524 PM* 04 21 31.6489558768 +21 02 23.558359736   7.215 6.779 6.531 6.283 F5V 148 0
29 V* RY Tau TT* 04 21 57.4132838427 +28 26 35.533990877 10.82 10.34 9.30 9.67 8.87 K1IV/Ve 634 1
30 HD 283572 TT* 04 21 58.8482823933 +28 18 06.511915195   9.80 9.03 9.14   G5IVe 262 0
31 * tet02 Tau dS* 04 28 39.7445471109 +15 52 15.122606898 3.690 3.600 3.410 5.43   A7III 414 0
32 HD 28527 dS* 04 30 33.6330527888 +16 11 38.462112418   4.975 4.764 6.52   A6IV 176 0
33 * rho Tau dS* 04 33 50.9175336 +14 50 39.923228 4.98 4.90 4.65 4.41 4.29 A8V 203 0
34 NAME Per B AGN 04 37 04.37510272 +29 40 13.8184969   21.7       ~ 458 2
35 HD 283817 TT* 04 40 32.6390643711 +24 26 31.332766721   11.49 10.61     K2e+A 33 0
36 HD 29646 * 04 41 19.7607530516 +28 36 53.962169646   5.736 5.729     A2V 65 0
37 V* AB Aur Ae* 04 55 45.8459978418 +30 33 04.293281305 7.20 7.16 7.05 6.96 6.70 A0Ve 899 2
38 V* SU Aur TT* 04 55 59.3861369488 +30 34 01.499800471   10.33 9.30 9.17   G2IIIne 524 0
39 HD 31648 Ae* 04 58 46.2654165113 +29 50 36.990341242 7.84 7.78 7.62 7.76 7.43 A5Vep 374 0
40 V* UX Ori Ae* 05 04 29.9881676817 -03 47 14.288047238 10.25 10.93 8.70 9.62 9.43 A4IVe 328 1
41 LDN 1616 DNe 05 07 00 -03 21.1           ~ 25 0
42 HD 287841 Y*O 05 24 42.8031051407 +01 43 48.249517233 10.55 10.45 10.17 9.99 9.80 A8V 83 0
43 V* CO Ori TT* 05 27 38.3352 +11 25 38.923 12.96 12.33 10.30 10.33 9.63 F7Ve 155 0
44 HD 35929 dS* 05 27 42.7907337821 -08 19 38.446457813   8.55 8.11     F2IV/V 85 0
45 HD 36112 Ae* 05 30 27.5286772598 +25 19 57.082162439   8.57 8.27     A8Ve 324 0
46 V* HK Ori Ae* 05 31 28.0451235474 +12 09 10.149849783 11.82 12.06 11.10 11.02 10.56 A2?e+G0?e 173 1
47 * alf Lep V* 05 32 43.8161188 -17 49 20.241380 3.02 2.77 2.57 2.35 2.14 F0Ib 266 0
48 * lam Ori ** 05 35 08.27761 +09 56 02.9611 2.45 3.48 3.66 3.72 3.89 O8IIIf+B0.5V 261 1
49 HD 245185 Ae* 05 35 09.6040600795 +10 01 51.465846371 10.05 10.07 9.93     A0Vae 101 0
50 M 42 HII 05 35 17.3 -05 23 28           ~ 3658 0
51 Ass Ori OB 1c As* 05 35 21 -05 20.5           ~ 127 1
52 Cl Collinder 70 OpC 05 35 30 -01 06.0           ~ 55 0
53 V* NV Ori Ae* 05 35 31.3684708885 -05 33 08.871090196 10.36 10.21 8.70 9.48 9.22 F6IIIe 84 0
54 V* T Ori Ae* 05 35 50.4483740019 -05 28 34.923375739 12.724 11.637 11.248 10.09 10.043 A3IVeb 226 0
55 V* CQ Tau Ae* 05 35 58.4671238887 +24 44 54.086375712 11.290 10.780 10.000   8.33 F5IVe 246 0
56 NGC 1999 RNe 05 36 25 -06 42.7   9.5       ~ 95 0
57 BD-06 1253 Ae* 05 36 25.4313245626 -06 42 57.684449700   11.65 10.9 10.29   A1e 402 1
58 V* BN Ori Ae* 05 36 29.3483164157 +06 50 02.174009216   10.04 8.80     F4e 60 0
59 V* BF Ori Ae* 05 37 13.2623698298 -06 35 00.565420577 10.37 10.00 9.69 10.06 9.31 A7III 266 0
60 NAME Ori A MoC 05 38 -07.1           ~ 2615 0
61 V* RR Tau Ae* 05 39 30.5114685049 +26 22 26.961204895 11.64 12.09 11.28 10.58 10.17 A0:IVe 215 0
62 V* V350 Ori Em* 05 40 11.7641189614 -09 42 11.085315699 12.74 12.08 11.42 11.38 10.96 A7V 61 0
63 NAME Flame Nebula HII 05 41 42.7 -01 54 44           ~ 690 1
64 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1130 0
65 V* V351 Ori Ae* 05 44 18.7949420603 +00 08 40.411665342 9.44 9.22 8.87     A7V 97 0
66 V* FU Ori FU* 05 45 22.3650208559 +09 04 12.296285806   10.72 9.60     F0Iab 686 1
67 LDN 1630 DNe 05 45.5 -00 59           ~ 346 0
68 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1602 1
69 * eta Lep PM* 05 56 24.2930042 -14 10 03.718884 4.05 4.05 3.72 3.39 3.23 F2V 314 0
70 HD 250550 Ae* 06 01 59.9894900068 +16 30 56.724889160   9.60 9.593 9.64   B9e 228 1
71 * 12 Lyn ** 06 46 14.13019 +59 26 30.0227       6.11   A2.5V 97 0
72 V* Z CMa Ae* 07 03 43.1588002461 -11 33 06.230351311 10.51 9.99 8.80     B5/8eq+F5/7 518 3
73 NAME CMa R1 As* 07 08 21.3 -11 04 50           ~ 73 1
74 CD-44 3318 Ae* 07 19 28.2886716751 -44 35 11.235575735   10.47 9.99     A1e/F2IIIe 111 0
75 * eta CMa s*b 07 24 05.70228 -29 18 11.1798 1.65 2.37 2.45 2.38 2.44 B5Ia 353 0
76 HD 59612 * 07 29 51.4121211636 -23 01 27.437916738 5.27 5.10 4.86 4.58 4.38 A5/7Iab/II 117 1
77 * bet Gem PM* 07 45 18.94987 +28 01 34.3160 3.00 2.14 1.14 0.39 -0.11 K0IIIb 1038 1
78 * b Vel V* 08 40 37.5701711 -46 38 55.476997 4.86 4.52 3.81 3.16 2.62 F0Ia 126 0
79 * iot UMa ** 08 59 12.45362 +48 02 30.5741 3.40 3.33 3.14 2.92 2.85 A6 282 0
80 * iot UMa A SB* 08 59 12.4597226763 +48 02 30.593508885   3.36 3.13     A7V(n) 251 0
81 * tau UMa SB* 09 10 55.0404694887 +63 30 49.064336279   5.008 4.640     kA5hF0mF5II 213 1
82 * tet UMa PM* 09 32 51.4338939 +51 40 38.281102 3.67 3.64 3.18 2.74 2.47 F7V 382 0
83 * kap Hya V* 09 40 18.3649593 -14 19 56.267439   4.909 5.052     B3/5IV/V 154 0
84 * ups Car A * 09 47 06.123 -65 04 19.22   3.25 2.99 4.92   A8Ib 52 0
85 * mu. Leo PM* 09 52 45.8165435 +26 00 25.031882 6.50 5.10 3.88 2.97 2.39 K2IIIbCN1Ca1 395 1
86 * phi Vel * 09 56 51.7416742 -54 34 04.039043 2.81 3.35 3.45 3.51 3.59 B5Ib 120 0
87 * eta Leo * 10 07 19.9518606 +16 45 45.580270 3.17 3.39 3.41 3.32 3.35 A0Ib 314 1
88 * 21 LMi dS* 10 07 25.7629578 +35 14 40.896470 4.74 4.67 4.49 4.31 4.24 A7V(n) 212 0
89 * zet Leo V* 10 16 41.4159679 +23 25 02.322080 3.89 3.72 3.41 3.09 2.91 F0IIIa 212 0
90 * bet Sex a2* 10 30 17.4798102357 -00 38 13.303782819 4.43 4.96 5.10 5.13 5.27 B5IV/V 178 0
91 V* RZ Cha Al* 10 42 24.1085506369 -82 02 14.183157798   8.54 8.09     F3/5V 94 0
92 HD 95881 Em* 11 01 57.6212785173 -71 30 48.313329972   8.37 8.23     A0 84 0
93 HD 97048 Ae* 11 08 03.3105687971 -77 39 17.491180130 9.03 8.76 9.00   8.64 A0Vep 436 0
94 HD 97240 Em* 11 09 18.1471493575 -77 47 39.913817083   8.91 8.50     F5V 33 0
95 HD 98922 Be* 11 22 31.6740564115 -53 22 11.456030308   6.80 6.76     B9Ve 110 1
96 * iot Leo SB* 11 23 55.45273 +10 31 46.2195   4.35   3.8   F3V 259 0
97 HD 100546 Be* 11 33 25.4404858122 -70 11 41.239343121   6.71 6.30   6.64 A0VaekB8_lB 615 1
98 * bet Vir PM* 11 50 41.7182390 +01 45 52.991019 4.26 4.15 3.60 3.13 2.85 F9V 845 0
99 * gam UMa Em* 11 53 49.8473166 +53 41 41.135025 2.440 2.450 2.440 2.44 2.47 A0Ve+K2V 377 0
100 * eps Cha * 11 59 37.57634 -78 13 18.6179   4.869 4.916     B9V(n) 93 1
101 V* DX Cha Ae* 12 00 05.0870448691 -78 11 34.559255151   6.81 6.60     A0_sh 299 0
102 * del Crv PM* 12 29 51.8551642 -16 30 55.552542 2.80 2.89 2.94 2.99 3.03 A0IV(n)kB9 182 0
103 HD 111775 * 12 52 05.4326716440 -48 05 39.391506167   6.328 6.304     A0V 32 0
104 * g UMa ** 13 25 13.5378333 +54 59 16.654781 4.260 4.180 4.010 3.85 3.78 A5V+M3-4V 287 0
105 * tau Vir * 14 01 38.7934143 +01 32 40.314540   4.331 4.237   4.11 A2IV/V 134 0
106 * gam UMi dS* 15 20 43.7160391 +71 50 02.459561   3.067 3.002     A2III 140 0
107 * iot Dra V* 15 24 55.7746265 +58 57 57.834445 5.68 4.45 3.29 2.51 1.91 K2III 366 1
108 HD 139614 pr* 15 40 46.3818973118 -42 29 53.538928508   8.47 8.24     A9VekA5mA5(_lB) 148 0
109 Ass Sco OB 2-2 * 15 43.6 -27 19           ~ 16 0
110 HD 142666 TT* 15 56 40.0222941557 -22 01 40.004849949 9.41 9.37 8.82 8.31 8.01 F0V_sh 202 0
111 * phi Ser PM* 15 57 14.5711519308 +14 24 52.131809991   6.677 5.530     K1IV 102 0
112 HD 144432 Ae* 16 06 57.9530266912 -27 43 09.758016578 8.47 8.53 8.19 7.82 7.53 A9/F0V 207 1
113 V* V856 Sco dS* 16 08 34.2868591379 -39 06 18.326059778 7.66 7.41 7.05 6.92   A7 343 0
114 V* V1027 Sco a2* 16 08 34.5611688784 -39 05 34.277434873   6.552 6.629 6.66   A0/3III 174 0
115 NAME Lupus III SFR 16 09.6 -39 03           ~ 264 0
116 NAME ASSOC II SCO As* 16 15 -24.2           ~ 1080 1
117 NAME Sco R1 As* 16 20 -22.0           ~ 10 0
118 * gam Her ** 16 21 55.2144050 +19 09 11.261793 4.22 4.03 3.76 3.47 3.33 A9IIIbn 165 0
119 * 15 Dra * 16 27 59.0160285398 +68 46 05.305188356 4.84 4.906 4.949     B9.5IV 82 0
120 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 2936 0
121 NAME Sco-Oph Region reg 16 30.0 -21 00           ~ 71 0
122 NAME dze Oph Cloud Cld 16 37 09 -10 34.0           ~ 102 0
123 HD 150193 Be* 16 40 17.9242900066 -23 53 45.192676418 9.69 9.32 8.79 8.41   B9.5Ve 285 0
124 LDN 1729 DNe 16 43.0 -24 06           ~ 31 0
125 V* AK Sco Ae* 16 54 44.8497760618 -36 53 18.560813962 9.80 9.63 9.00     F5V 227 1
126 EM* AS 220 Ae* 17 10 08.1238 -27 15 18.801 12.86 12.79 12.22 12.03 10.82 A6Ve+G5Ve 125 0
127 HD 156208 Al* 17 16 14.2606393919 +02 11 10.328463925 6.57 6.41 6.18 5.98   A1IV 58 0
128 * bet Dra * 17 30 25.9616959 +52 18 04.999351 4.43 3.79 2.81 2.12 1.64 G2Ib-IIa 386 0
129 * alf Oph ** 17 34 56.06945 +12 33 36.1346 2.32 2.22 2.07 1.93 1.85 A5IVnn 435 0
130 HD 160365 PM* 17 38 57.8542418420 +13 19 45.327954187   6.678 6.123     F6III 74 0
131 * mu. Her ** 17 46 27.5266778 +27 43 14.437984 4.56 4.17 3.42 2.89 2.51 G5IV 638 1
132 HD 163296 Ae* 17 56 21.2882188601 -21 57 21.872343282 7.00 6.93 6.85 6.86 6.67 A1Vep 733 0
133 * zet Ser PM* 18 00 29.0113725 -03 41 24.968552   4.982 4.616     F2V 172 0
134 * 67 Oph * 18 00 38.7134668813 +02 55 53.595379606 3.34 3.96 3.93 3.84 3.81 B5I 383 0
135 * mu. Sgr s*b 18 13 45.8088401 -21 03 31.794073 3.60 4.07 3.85 3.58 3.38 B8Iab(e) 332 0
136 HD 169142 Ae* 18 24 29.7799676975 -29 46 49.328597698   8.42 8.16     F1VekA3mA3_lB? 305 2
137 * 110 Her PM* 18 45 39.7257041 +20 32 46.717099 4.66 4.65 4.19 3.80 3.54 F5.5IV-V 375 0
138 V* R CrA Ae* 19 01 53.6850227874 -36 57 08.145519972 12.781 12.651 11.917 11.242 10.412 B5IIIpe 440 1
139 V* WW Vul Ae* 19 25 58.7494596284 +21 12 31.333220807 11.46 10.99 10.25 10.38 10.12 A2IVe 214 0
140 HD 183143 s*b 19 27 26.5636908636 +18 17 45.191198361 8.25 8.08 6.86 5.74 4.79 B6Ia 404 0
141 * sig Dra PM* 19 32 21.5902990 +69 39 40.234737 5.860 5.460 4.680 4.04 3.63 K0V 572 0
142 * tet Cyg PM* 19 36 26.5343563 +50 13 15.964573 4.83 4.86 4.48 4.13 3.92 F3+V 320 1
143 * del Cyg PM* 19 44 58.4785413 +45 07 50.916066 2.75 2.85 2.87 2.88 2.90 A0IV 276 0
144 * 15 Vul a2* 20 01 06.0484585 +27 45 12.863884   4.829 4.651     A4III 223 0
145 * alf Cyg sg* 20 41 25.91514 +45 16 49.2197 1.11 1.34 1.25 1.14 1.04 A2Ia 713 0
146 * eta Cep PM* 20 45 17.3755540 +61 50 19.616737 4.960 4.320 3.410 2.76 2.27 K0IV 414 0
147 HD 199143 ** 20 55 47.67398 -17 06 51.0440   7.84 7.32     F8V 103 0
148 * sig Cyg sg* 21 17 24.9524404 +39 23 40.852798 3.98 4.37 4.24 4.06 3.92 A0Ia 249 0
149 BD+46 3471 Ae* 21 52 34.0992388111 +47 13 43.600551484 10.72 10.56 10.15     A0.5IIIer 190 1
150 IC 5146 SFR 21 53 24 +47 16.0   7.82 7.2     ~ 375 2
151 HD 210221 Pu* 22 07 25.5853748300 +53 18 26.771994597 6.81 6.555 6.171     A3Ib 73 0
152 * 4 Lac * 22 24 30.9907943432 +49 28 34.999228897 4.33 4.67 4.58 4.45 4.35 A0Ib 171 0
153 * 1 Psc * 22 54 59.4856372963 +01 03 53.647003843   6.31 6.11     A3IV 35 0
154 V* DI Cep TT* 22 56 11.5378442456 +58 40 01.770384984   12.01 11.95     G8IVe 128 0
155 * alf PsA ** 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1101 3
156 BD+47 4206 * 23 36 40.4884030778 +48 14 26.656448895   9.54 9.23     F2 5 0
157 Ass Ori OB 1a As* ~ ~           ~ 185 0

    Equat.    Gal    SGal    Ecl

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2019.11.14-08:41:23

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