2009A&A...495..901M


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.25CET07:47:21

2009A&A...495..901M - Astronomy and Astrophysics, volume 495, 901-917 (2009/3-1)

Parameters of Herbig Ae/Be and Vega-type stars.

MONTESINOS B., EIROA C., MORA A. and MERIN B.

Abstract (from CDS):

This work presents the characterization of 27 young early-type stars, most of them in the age range 1-10Myr, and three suspected hot companions of post-T Tauri stars belonging to the Lindroos binary sample. Most of these objects show IR excesses in their spectral energy distributions, which are indicative of the presence of disks. The work is relevant in the fields of stellar physics, physics of disks and formation of planetary systems. The aim of the work is the determination of the effective temperature, gravity, metallicity, mass, luminosity and age of these stars. An accurate modelling of their disks requires the knowledge of most of these parameters, since they will determine the energy input received by the disk and hence, its geometry and global properties. Spectral energy distributions and mid-resolution spectra were used to estimate Teff, the effective temperature. The comparison of the profiles of the Balmer lines with synthetic profiles provides the value of the stellar gravity, g*. High-resolution optical observations and synthetic spectra are used to estimate the metallicity, [M/H]. Once Teff, g* and [M/H] are known for each star, evolutionary tracks and isochrones provide estimations of the mass, luminosity, age and distances (or upper limits in some cases). The method is original in the sense that it is distance-independent, i.e. the estimation of the stellar parameters does not require the knowledge of the distance to the object. Stellar parameters (effective temperature, gravity, metallicity, mass, luminosity, age and distances - or upper limits) are obtained for the sample of stars mentioned above. A detailed discussion of some individual objects, in particular VV Ser, RR Tau, 49 Cet and the three suspected hot companions of post-T Tauris, is presented. These results, apart from their intrinsic interest, would be extremely valuable to model the disks surrounding the stars. The paper also shows the difficulty posed by the morphology and behaviour of the system star+disk in the computation of the stellar parameters.

Abstract Copyright:

Journal keyword(s): stars: pre-main sequence - stars: fundamental parameters - stars: abundances - stars: evolution - stars: circumstellar matter - stars: planetary systems: protoplanetary disks

Simbad objects: 58

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Number of rows : 58

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 HD 141 * 00 06 09.0767745070 -29 09 04.984711893   7.88 7.92     B9V 36 0
2 HD 256 ** 00 07 18.2617173748 -17 23 13.242357537   6.311 6.203 7.36   A3Vn_sh 99 0
3 * 34 Psc * 00 10 02.2026446215 +11 08 44.925917994   5.456 5.530   5.58 B9Vn 126 0
4 * 34 Psc B * 00 10 02.3864682259 +11 08 37.818484938     10.37     G5Ve 100 0
5 V* VX Cas Ae* 00 31 30.6816836826 +61 58 50.982831889 11.83 11.59 10.50 11.19 10.94 A0Vep 126 0
6 * lam02 Scl PM* 00 44 12.0987361108 -38 25 18.062817253   7.06 5.96     K1III 39 0
7 HD 4881 * 00 51 33.7899557334 +51 34 17.128881532 6.200 6.250 6.220     B9.5V 52 0
8 HD 6028 * 01 02 18.4621840612 +51 02 05.805940928 6.760 6.610 6.490     A3V 33 0
9 * 49 Cet PM* 01 34 37.7788265080 -15 40 34.898112472   5.667 5.607   5.54 A1V 249 0
10 * pi. Cet SB* 02 44 07.3492803 -13 51 31.313011 3.66 4.112 4.236     B7IV 315 0
11 * tau01 Eri PM* 02 45 06.2034405658 -18 34 21.478629972 4.94 4.94 4.46 4.03 3.76 F7V 210 0
12 * rho Ari PM* 02 56 26.1717266513 +18 01 23.665188613   6.06   5.3   F6V 148 0
13 * alf For ** 03 12 04.5273570 -28 59 15.433684 4.41 4.36 3.85 3.39 3.08 F6V+G7V 246 0
14 HD 281159 Y*? 03 44 34.197 +32 09 46.27 9.19 9.21 8.53   7.850 B5V 205 2
15 V* XY Per Ae* 03 49 36.3362509899 +38 58 55.551266650 12.12 10.14 9.58 9.54 8.40 A2II+B6 142 0
16 HD 28978 * 04 34 08.2676941493 +05 34 07.040449548   5.729 5.678     A2IV 89 0
17 V* AB Aur Ae* 04 55 45.8459978418 +30 33 04.293281305 7.20 7.16 7.05 6.96 6.70 A0Ve 942 2
18 HD 31648 Ae* 04 58 46.2654165113 +29 50 36.990341242 7.84 7.78 7.62 7.76 7.43 A5Vep 403 0
19 V* UX Ori Ae* 05 04 29.9881676817 -03 47 14.288047238 10.25 10.93 8.70 9.62 9.43 A4IVe 336 1
20 V* V1366 Ori Ae* 05 16 00.4764811920 -09 48 35.394685295 10.19 10.16 9.84 9.77 9.63 B9.5V 166 0
21 HD 33564 PM* 05 22 33.5290089287 +79 13 52.142657543       4.8   F7V 151 1
22 HD 287841 Y*O 05 24 42.8031051407 +01 43 48.249517233 10.55 10.45 10.17 9.99 9.80 A8V 88 0
23 HD 36112 Ae* 05 30 27.5286772598 +25 19 57.082162439   8.57 8.27     A8Ve 369 0
24 HD 244604 Or* 05 31 57.2512002483 +11 17 41.374206174   9.61 9.43     A0Vesh 58 0
25 V* T Ori Ae* 05 35 50.4483740019 -05 28 34.923375739 12.724 11.637 11.248 10.09 10.043 A3IVeb 229 0
26 V* BF Ori Ae* 05 37 13.2623698298 -06 35 00.565420577 10.37 10.00 9.69 10.06 9.31 A7III 271 0
27 V* RR Tau Ae* 05 39 30.5114685049 +26 22 26.961204895 11.64 12.09 11.28 10.58 10.17 A0:IVe 216 0
28 V* V350 Ori Y*O 05 40 11.7641189614 -09 42 11.085315699 12.74 12.08 11.42 11.38 10.96 A7V 66 0
29 HD 250550 Ae* 06 01 59.9894900068 +16 30 56.724889160   9.60 9.593 9.64   B9e 233 1
30 HD 42111 * 06 08 57.9039737933 +02 29 58.887793999 5.86 5.80 5.73     B9V 115 0
31 HD 58647 Em* 07 25 56.0988044433 -14 10 43.548997982 6.81 6.92 6.85 6.73 6.73 B9IV 75 0
32 * 17 Sex Ae* 10 10 07.5395826 -08 24 29.395489   5.911 5.901     A0V 62 0
33 * bet UMa PM* 11 01 50.4765370 +56 22 56.733912 2.35 2.35 2.37 2.31 2.35 A1IVps 411 1
34 HD 97048 Ae* 11 08 03.3105687971 -77 39 17.491180130 9.03 8.76 9.00   8.64 A0Vep 464 0
35 * tet Leo PM* 11 14 14.4044630 +15 25 46.454086 3.40 3.33 3.35 3.32 3.34 A2IV 311 0
36 HD 100453 Ae* 11 33 05.5765928993 -54 19 28.543792679   8.09 7.79     A9Ve 204 1
37 HD 100546 Be* 11 33 25.4404858122 -70 11 41.239343121   6.71 6.30   6.64 A0VaekB8_lB 659 1
38 * bet Leo dS* 11 49 03.57834 +14 34 19.4090 2.30 2.22 2.13 2.08 2.06 A3Va 544 0
39 V* DX Cha Ae* 12 00 05.0870448690 -78 11 34.559255151   6.81 6.60     A0_sh 310 0
40 * del Crv PM* 12 29 51.8551642 -16 30 55.552542 2.80 2.89 2.94 2.99 3.03 A0IV(n)kB9 186 0
41 * 24 CVn PM* 13 34 27.2592843 +49 00 57.506529   4.82 4.70     A4V 97 0
42 * lam Boo dS* 14 16 23.0187965 +46 05 17.900526 4.31 4.26 4.18 4.16 4.13 A0Va_lB 327 0
43 HD 127304 * 14 29 49.6704431538 +31 47 28.278888987   6.034 6.050     A0Vs(Si) 78 0
44 HD 135344 * 15 15 48.9457954324 -37 08 55.727525343   7.84 7.76     A0V 128 1
45 HD 139614 pr* 15 40 46.3818973118 -42 29 53.538928508   8.47 8.24     A9VekA5mA5(_lB) 164 0
46 HD 141569 pr* 15 49 57.7484743862 -03 55 16.344023102 7.22 7.20 7.12 7.00 7.04 A2VekB9mB9(_lB) 476 0
47 HD 150193 Be* 16 40 17.9242900066 -23 53 45.192676418 9.69 9.32 8.79 8.41   B9.5Ve 295 0
48 * c Oph Be* 17 31 24.9541340 -23 57 45.513592 4.75 4.81 4.81 4.74 4.72 A0V 256 0
49 HD 163296 Ae* 17 56 21.2882188601 -21 57 21.872343282 7.00 6.93 6.85 6.86 6.67 A1Vep 823 0
50 V* VV Ser Ae* 18 28 47.8619658319 +00 08 39.924642619 12.99 12.63 11.80 11.01 10.24 A5Ve 230 0
51 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 935 2
52 HD 179218 Ae* 19 11 11.2540715594 +15 47 15.632212730 7.55 7.476 7.39 7.25 7.21 A0Ve 224 0
53 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
54 HD 190073 Ae* 20 03 02.5098091524 +05 44 16.658081203 7.91 7.86 7.73   7.65 A2IVe 230 0
55 EM* AS 442 Ae* 20 47 37.4658048789 +43 47 24.973275249 11.90 11.56 10.90 10.18 9.95 B8Ve 82 0
56 V* SV Cep Ae* 22 21 33.2175224577 +73 40 27.096415978 11.40 11.25 10.35 10.28 10.08 A2IVe 123 0
57 * 51 Peg Ro* 22 57 27.9804167474 +20 46 07.782240714 6.39 6.16 5.46 4.97 4.61 G2IV 1080 1
58 HD 223884 PM* 23 53 20.8446210729 -24 13 45.312230568   6.410 6.231     A5V 42 0

    Equat.    Gal    SGal    Ecl

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2020.11.25-07:47:21

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