2015MNRAS.448..484L

Query : 2015MNRAS.448..484L

2015MNRAS.448..484L - Mon. Not. R. Astron. Soc., 448, 484-501 (2015/March-3)

Constraints to the magnetospheric properties of T Tauri stars - II. The MgII ultraviolet feature.

LOPEZ-MARTINEZ F. and GOMEZ DE CASTRO A.I.

Abstract (from CDS):

The atmospheric structure of T Tauri stars (TTSs) and its connection with the large-scale outflow is poorly known. Neither the effect of the magnetically mediated interaction between the star and the disc is well understood. The Mgii multiplet is a fundamental tracer of TTSs atmospheres and outflows, and is the strongest feature in the near-ultraviolet spectrum of TTSs. The International Ultraviolet Explorer and Hubble Space Telescope data archives provide a unique set to study the main physical compounds contributing to the line profile and to derive the properties of the line formation region. The Mgii profiles of 44 TTSs with resolution 13 000-30 000 are available in these archives. In this work, we use this data set to measure the main observables: flux, broadening, asymmetry, terminal velocity of the outflow, and the velocity of the discrete absorption components. For some few sources repeated observations are available and variability has been studied. There is a warm wind that at sub-au scales absorbs the blue wing of the Mgii profiles. The main result found in this work is the correlation between the line broadening, Mgii flux, terminal velocity of the flow and accretion rate. Both outflow and magnetospheric plasma contribute to the Mgii flux. The flux-flux correlation between Mgii and Civ or HeII is confirmed; however, no correlation is found between the Mgii flux and the UV continuum or the H2 emission.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): line: profiles - stars: jets - stars: pre-main-sequence - stars: variables: T Tauri, Herbig Ae/Be - stars: winds, outflows - ultraviolet: stars

VizieR on-line data: <Available at CDS (J/MNRAS/448/484): table2.dat table3.dat table1.dat tablea1.dat refs.dat>

Simbad objects: 45

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Number of rows : 45
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* FM Tau Or* 04 14 13.5841955640 +28 12 49.168982592 14.44   13.80 13.64   M0/2e 216 0
2 EM* LkCa 4 Or* 04 16 28.1067298272 +28 07 35.731363080   13.96 12.78 11.825   K7:Ve 187 0
3 V* CY Tau Or* 04 17 33.7284990744 +28 20 46.812121656 14.52 14.68 13.40 12.59   M1.5 270 0
4 V* BP Tau Or* 04 19 15.8339827632 +29 06 26.926959492   13.13 12.12 11.89   K5/7Ve 664 0
5 WK81 1 TT* 04 19 26.2675117776 +28 26 14.259575472   14.81 13.04 12.240   K7 225 1
6 V* DE Tau Or* 04 21 55.6347850824 +27 55 06.184016436 15.18 15.13 13.80     M3Ve 258 0
7 V* RY Tau Or* 04 21 57.4092550080 +28 26 35.555316612 10.82 10.34 9.30 9.67 8.87 K1IV/Ve 704 1
8 V* T Tau TT* 04 21 59.4319873992 +19 32 06.432393336   11.22 10.12 9.80   K0IV/Ve 1404 1
9 V* IP Tau Or* 04 24 57.0824018640 +27 11 56.539953888   14.50   12.46   M0:Ve 232 0
10 V* DF Tau TT* 04 27 02.7932020080 +25 42 22.453341516 11.97 12.25 11.42 10.31 9.14 M3Ve 500 1
11 V* DG Tau Or* 04 27 04.6921275888 +26 06 16.060169268 13.57 13.97 10.50 12.28   K6Ve 1024 1
12 HD 285778 Or* 04 27 10.5694045464 +17 50 42.660831084   11.07 10.22     K1e 134 0
13 V* UX Tau Or* 04 30 03.99626 +18 13 49.4355 11.23 11.84 10.80 9.83 9.05 K2Ve+M1Ve 355 0
14 V* DK Tau Or* 04 30 44.243376 +26 01 24.65328 13.32 14.59 13.05 12.08   K7e+K7e 330 0
15 V* HN Tau Or* 04 33 39.3629421552 +17 51 52.289234280   14.76 13.40 13.05   K5e 255 0
16 V* DM Tau Or* 04 33 48.7336763736 +18 10 09.973460280 14.30 14.82 14.00     M2Ve 633 0
17 V* AA Tau Or* 04 34 55.4201902392 +24 28 53.033624580 13.14 13.34 12.20 12.03   K5Ve 723 0
18 V* DN Tau Or* 04 35 27.3776226144 +24 14 58.910343720 13.56 12.88 11.50 11.79   M1:Ve 396 0
19 V* DP Tau Or* 04 42 37.6989071232 +25 15 36.983641716 15.84 15.2 13.70 14.42   M0.8 172 1
20 V* DR Tau Or* 04 47 06.2151561264 +16 58 42.813872580 12.03 11.86 10.50 12.19   K5Ve 534 0
21 V* DS Tau Or* 04 47 48.5954691000 +29 25 11.191621512 13.11 13.16 12.30 12.37 10.80 K4Ve 258 0
22 V* GM Aur Or* 04 55 10.9815576936 +30 21 59.373771876 14.59 13.351 12.242 11.798   K3Ve 688 0
23 HD 282630 Or* 04 55 36.9695564640 +30 17 55.101300900   12.17 11.12 10.55   K0Ve 171 0
24 V* SU Aur Or* 04 55 59.3866872552 +30 34 01.499608092   10.33 9.30 9.17   G2IIIne 591 0
25 V* V397 Aur Or* 04 56 02.0265224208 +30 21 03.670989228   13.07 11.72 11.25   K7e 172 0
26 V* V836 Tau TT* 05 03 06.5988375912 +25 23 19.606639488   15.00 13.49 13.48   K7/M0Ve 235 0
27 V* RW Aur TT* 05 07 49.5662483 +30 24 05.177426   10.86 9.60 9.95   K1/5e+K5e 781 0
28 V* CO Ori Or* 05 27 38.3386648 +11 25 38.974625 12.96 12.33 10.30 10.33 9.63 F7Ve 168 0
29 V* GW Ori Or* 05 29 08.3928710640 +11 52 12.666457092   10.83 10.10 9.52   G5/8Ve 351 0
30 V* FU Ori Or* 05 45 22.3647842544 +09 04 12.291320064   10.72 9.60     F0Iab 813 1
31 V* EG Cha Or* 08 36 56.2143359952 -78 56 45.633633000   11.82 10.457   9.010 K4Ve 98 0
32 V* ET Cha Or* 08 43 18.5853516024 -79 05 18.232481832     13.97     M4.0 86 0
33 V* EP Cha Or* 08 47 01.6439909496 -78 59 34.380161016     11.1     K5IVe 92 0
34 V* CE Ant TT* 10 42 30.1018928760 -33 40 16.229805204   12.21 10.91   9.10 M2Ve 209 1
35 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 1892 1
36 V* CS Cha Or* 11 02 24.8763629208 -77 33 35.667131796   12.88 11.69   10.123 K2Ve 230 0
37 TWA 3A TT* 11 10 27.9121410480 -37 31 51.535547940   14.04 12.57   9.10 M4Ve 209 0
38 V* CV Cha Or* 11 12 27.7055693328 -76 44 22.302807396   12.02 10.98 10.51 9.76 G9Ve 194 1
39 CD-34 7390A TT* 11 21 17.2193334624 -34 46 45.503251608   12.88 11.46 11.43 9.57 M1Ve 100 0
40 CPD-68 1894 TT* 13 22 07.5421944624 -69 38 12.219391716   11.38 10.393   9.117 K1Ve 158 0
41 V* RU Lup TT* 15 56 42.3108692112 -37 49 15.473946900 9.27 10.07 9.60     K7/M0e 469 0
42 WRAY 16-203 Or* 16 08 29.7275063376 -39 03 11.024360496   16.26 15.91 15.38 15.69 K0: 171 1
43 V* AK Sco Ae* 16 54 44.8491575376 -36 53 18.566586456 9.80 9.63 9.00     F5V 274 1
44 V* S CrA Or* 19 01 08.597088 -36 57 19.89504   11.76 10.91 11.41   G0Ve+K0Ve 270 0
45 V* DI Cep Or* 22 56 11.5377385392 +58 40 01.773069276   12.01 11.95     G8IVe 136 0

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