2001A&A...365...90F


C.D.S. - SIMBAD4 rel 1.7 - 2019.09.21CEST07:40:14

2001A&A...365...90F - Astronomy and Astrophysics, volume 365, 90-109 (2001/1-2)

Near infrared hydrogen lines as diagnostic of accretion and winds in T Tauri stars.

FOLHA D.F.M. and EMERSON J.P.

Abstract (from CDS):

From a sample of 50 T Tauri stars, mostly from the Taurus-Auriga complex, Paβ line profiles were obtained for 49 of the stars and Brγ profiles for 37 of the stars. Emission at Paβ was observed for 42 stars and emission at Brγ was found for 30 stars. The most conspicuous features in the line profiles is the almost complete absence of blueshifted absorption components and the relatively high frequency of inverse P Cygni profiles (IPC). At Paβ, 34% of the profiles are IPC while at Brγ 20% are IPC. The redshifted absorption features indicate infall at velocities of about 200km/s, compatible with free fall from a few radii out. In general, line profiles are broad centrally peaked with slightly blueshifted line peaks. Existing wind and accretion models fail, in quantitative terms, to explain the shape of the observed profiles. Magnetospheric accretion models, being the currently preferred ones, produce lines too narrow (by ∼100km/s FWHM), wings extending to velocities too low (by at least ∼100km/s) and with maximum normalized intensities too high by factors of a few. A qualitative agreement between some of the accretion model predicted profiles and some observations hint that emission in these lines might, at least partially, arise from infalling material. Definite claims regarding the origin of the emission in these lines cannot be made until models match observations much better than they currently do.

Abstract Copyright:

Journal keyword(s): line: profiles - circumstellar matter - stars: formation - stars: pre-main sequence - infrared: general - infrared: stars

VizieR on-line data: <Available at CDS (J/A+A/365/90): stars.dat table4.dat table5.dat table6.dat table7.dat>

Simbad objects: 54

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Number of rows : 54

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 HD 283447 TT* 04 14 12.9232870093 +28 12 12.378540314 13.17 12.07 10.68 9.45 8.67 K3Ve 372 0
2 V* FM Tau TT* 04 14 13.5839505100 +28 12 49.166941548 14.44   13.80 13.64   M0/2e 183 0
3 V* FN Tau TT* 04 14 14.5943659839 +28 27 58.063377983     14.70 13.68   M5 139 0
4 V* CW Tau TT* 04 14 17.0041128798 +28 10 57.765657757 13.92 13.64 12.36 12.86   K0Ve 307 0
5 V* FP Tau TT* 04 14 47.3027404423 +26 46 26.414740336 17.21 16.14 15.02     M4Ve 136 0
6 V* CY Tau TT* 04 17 33.7281514373 +28 20 46.809969664 14.52 14.68 13.40 12.59   M1.5 220 0
7 V* DD Tau TT* 04 18 31.1271804823 +28 16 29.158626278 15.94 15.49 14.10 13.76   M3.5e+M3.5e 174 0
8 V* V1023 Tau TT* 04 18 47.0296109602 +28 20 07.490327496   14.31 12.00 11.21   K7 135 0
9 V* BP Tau TT* 04 19 15.8342975037 +29 06 26.929456808   13.13 12.12 11.89   K5/7Ve 580 0
10 V* V1070 Tau TT* 04 19 41.2688488305 +27 49 48.151086734   13.75 12.25 11.14   M0 131 0
11 V* DE Tau TT* 04 21 55.6346296353 +27 55 06.184221341 15.18 15.13 13.80     M3Ve 214 0
12 V* RY Tau TT* 04 21 57.4132838427 +28 26 35.533990877 10.82 10.34 9.30 9.67 8.87 K1IV/Ve 630 0
13 V* T Tau TT* 04 21 59.4323326335 +19 32 06.439974179   11.01 9.30 9.80   K0IV/Ve 1233 2
14 V* FS Tau TT* 04 22 02.1925017485 +26 57 30.331063489 17.57   14.10 15.63   M3.5e+M0e 251 0
15 V* DF Tau TT* 04 27 02.7917481241 +25 42 22.456361256 11.97 12.25 11.42 10.31 9.14 M3Ve 453 1
16 V* DG Tau TT* 04 27 04.6913654419 +26 06 16.041555299 13.57 13.97 10.50 12.28   K6Ve 898 1
17 LDN 1521D DNe 04 27 46.5 +26 18 52           ~ 214 0
18 V* DI Tau TT* 04 29 42.4736177473 +26 32 49.119618729 16.39 15.20 13.60     M0Ve 188 0
19 V* IQ Tau TT* 04 29 51.5569553814 +26 06 44.854858369 15.43   13.80 12.28 11.11 M0.5 190 0
20 NAME Tau-Aur Region SFR 04 30 +25.0           ~ 1173 1
21 V* FX Tau TT* 04 30 29.614 +24 26 45.05   14.40 14.40 12.92   M4 138 0
22 NAME DK Tau A * 04 30 44.2409691803 +26 01 24.730398215           K5Ve 245 0
23 V* DK Tau TT* 04 30 44.251 +26 01 24.47 13.32 13.14 11.90 12.58   K7e+K7e 287 0
24 V* ZZ Tau TT* 04 30 51.3868605371 +24 42 22.331917434     12.90 13.97   M2.5V+M3.5V 126 0
25 V* HL Tau TT* 04 31 38.437 +18 13 57.65   16.02 15.10 14.21   K5 1115 0
26 IRAS 04287+1807 mul 04 31 38.8 +18 13 57           ~ 797 0
27 V* XZ Tau TT* 04 31 40.0868968022 +18 13 56.642439056     10.40 13.12   M2e+M2e 401 1
28 V* HK Tau TT* 04 31 50.5722969258 +24 24 17.775488652 16.81   15.10     M0.5 285 1
29 Haro 6-13 TT* 04 32 15.4177438039 +24 28 59.580866027 19.22   17.7     M0 174 1
30 V* GG Tau TT* 04 32 30.3318954228 +17 31 40.834888327 14.84 14.78 13.40 11.54   M0e+M2.0e 611 1
31 V* GH Tau TT* 04 33 06.2181025969 +24 09 33.628411049     13.20 12.59   M3Ve 161 0
32 V* V807 Tau TT* 04 33 06.6303920517 +24 09 55.044051684   12.10 11.21 11.18   K7 125 2
33 V* GI Tau TT* 04 33 34.0608378045 +24 21 17.067391746 14.34   13.70 12.15 11.06 K5Ve 241 1
34 V* GK Tau TT* 04 33 34.560 +24 21 05.85 15.50   13.00 11.58 10.62 K7:Ve 261 0
35 V* DL Tau TT* 04 33 39.0766866461 +25 20 38.097973550 14.04 14.59 13.40 11.85 10.89 K7Ve 272 0
36 V* AA Tau TT* 04 34 55.4222683130 +24 28 53.038273587 13.14 13.34 12.20     K5Ve 596 0
37 V* DN Tau TT* 04 35 27.3776240781 +24 14 58.908761629 13.56 12.88 11.50 11.79   M1:Ve 336 0
38 V* HP Tau TT* 04 35 52.7821592361 +22 54 23.158368128 17.39 14.9 14.90     K2-5e 182 0
39 V* DO Tau TT* 04 38 28.5882167490 +26 10 49.472067634 12.78 13.44 12.30 13.01   M1Ve 300 1
40 V* VY Tau TT* 04 39 17.4208176970 +22 47 53.361809753     9.00     M0Ve 177 0
41 V* DQ Tau TT* 04 46 53.0577037389 +17 00 00.135310040 14.56 13.67 12.00 13.21   M1Ve 277 0
42 Haro 6-37 Or* 04 46 58.980 +17 02 38.19   14.74 13.42 12.77   K7e+M1e 104 0
43 V* DR Tau TT* 04 47 06.2152696011 +16 58 42.814250257 12.03 11.86 10.50 12.19   K5Ve 461 0
44 V* DS Tau TT* 04 47 48.5954846337 +29 25 11.189809829 13.11 13.16 12.30 12.37 10.80 K4Ve 198 0
45 V* UY Aur TT* 04 51 47.3900418279 +30 47 13.552212742 12.82 12.96 11.90 10.59 9.52 M0e+M2.5e 317 0
46 V* GM Aur TT* 04 55 10.9813656049 +30 21 59.375978047 14.59 14.22 13.10     K3Ve 527 0
47 V* SU Aur TT* 04 55 59.3861369488 +30 34 01.499800471   10.33 9.30 9.17   G2IIIne 522 0
48 V* RW Aur TT* 05 07 49.538 +30 24 05.07   10.86 9.60 9.95   K1/5e+K5e 692 0
49 V* GW Ori TT* 05 29 08.3925564419 +11 52 12.653756566   10.83 10.10 9.52   G5/8Ve 291 2
50 V* YY Ori TT* 05 34 47.5333702377 -05 57 56.956038462     13.20   12.95 K2IVe 116 0
51 V* TW Hya TT* 11 01 51.9054298616 -34 42 17.031550898   11.94 10.50 10.626 9.18 K6Ve 1434 1
52 EM* LkHA 120 TT* 21 01 09.2068364908 +50 21 44.803310926 13.37 13.09 11.99 11.75   F0/F4-G5 185 1
53 V* DI Cep TT* 22 56 11.5378442456 +58 40 01.770384984   12.01 11.95     G8IVe 128 0
54 V* BM And TT* 23 37 38.4758253644 +48 24 11.837911775   12.40 12.40     K5Ve 80 1

    Equat.    Gal    SGal    Ecl

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2019.09.21-07:40:14

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