2006A&A...446..201M


Query : 2006A&A...446..201M

2006A&A...446..201M - Astronomy and Astrophysics, volume 446, 201-210 (2006/1-4)

Disc orientations in pre-main-sequence multiple systems. A study in southern star formation regions.

MONIN J.-L., MENARD F. and PERETTO N.

Abstract (from CDS):

Classical T Tauri stars are encircled by accretion discs most of the time unresolved by conventional imaging observation. However, numerical simulations show that unresolved aperture linear polarimetry can be used to extract information about the geometry of the immediate circumstellar medium that scatter the starlight. Monin et al. (1998A&A...339..113M) previously suggested that polarimetry can be used to trace the relative orientation of discs in young binary systems in order to shed light on the stellar and planet formation process. In this paper, we report on new VLT/FORS1 optical linear polarisation measurements of 23 southern binaries spanning a range of separation from 0.8'' to 10''. In each field, the polarisation of the central binary is extracted, as well as the polarisation of nearby stars in order to estimate the local interstellar polarisation. We find that, in general, the linear polarisation vectors of individual components in binary systems tend to be parallel to each other. The amplitude of their polarisations are also correlated. These findings are in agreement with our previous work and extend the trend to smaller separations. They are also similar to other studies, e.g., Donar et al. (1999AAS...195.7904D), Jensen et al. (2000IAUS..200P..85J; 2004ApJ...600..789J), Wolf et al. (2001IAUS..200..295W). However, we also find a few systems showing large differences in polarisation level, possibly indicating different inclinations to the line-of-sight for their discs.

Abstract Copyright:

Journal keyword(s): stars: pre-main sequence - stars: binaries: visual - stars: formation - stars: circumstellar matter - ISM: dust, extinction - instrumentation: polarimeters

Simbad objects: 38

goto Full paper

goto View the references in ADS

Number of rows : 38
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 225213 Er* 00 05 24.4278018131 -37 21 26.504223709 11.074 10.022 8.562 7.589 6.432 M2V 189 0
2 V* BV Ari Or* 02 56 08.424288 +20 03 38.57004   16.93 15.42 14.37   M3Ve 38 0
3 LDN 1521D DNe 04 27 46.5 +26 18 52           ~ 215 0
4 V* HK Tau Or* 04 31 50.5722969258 +24 24 17.775488652 16.81   15.10     M0.5 304 1
5 V* HV Tau Or* 04 38 35.2903493114 +26 10 38.646251388           M1Ve 122 0
6 NAME GUM Nebula ISM 07 43 -42.1           ~ 395 1
7 ESO-HA 29 Or* 08 35 22.4410366262 -40 38 53.975202149           ~ 6 0
8 V* SX Cha Or* 10 55 59.802000 -77 24 40.12524   16.01 14.57 14.23 12.35 M1.5+M3 82 0
9 NAME TW Hya Association As* 11 01.9 -34 42           ~ 854 0
10 Sz 15 Em* 11 05 41.5853855908 -77 54 44.138550774   13.6       K5.5V 16 0
11 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1023 1
12 Sz 30 TT* 11 09 11.72304 -77 29 12.4836   14.89 13.28 13.02 11.032 M2.5+M2 50 0
13 TWA 3 ** 11 10 27.894072 -37 31 51.96612   13.53 12.05 11.61 9.29 M4Ve+M4Ve 203 0
14 TWA 3A TT* 11 10 27.9117558304 -37 31 51.529219753   14.04 12.57   9.10 M4Ve 194 0
15 NAME Cha II MoC 12 54 -77.2           ~ 307 0
16 RX J1300.9-7708 Y*O 13 00 53.46120 -77 09 08.6580           M1 22 0
17 Sz 60 ** 13 07 22.760 -77 37 22.89           ~ 16 0
18 Sz 62 Y*O 13 09 50.37 -77 57 24.0   16.99 15.55     M2.5 30 0
19 Sz 65 Or* 15 39 27.7717320499 -34 46 17.209059896   13.11 12.13 11.33 10.76 K7 78 0
20 THA 15-10 TT* 15 55 50.289888 -38 01 33.50928   16.24 14.88 14.74   M5.1 33 0
21 NAME Lup Cloud SFR 16 03 -38.1           ~ 568 0
22 V* HO Lup Or* 16 07 00.603672 -39 02 19.49316   13.94 13.17 13.03   M1e 62 0
23 THA 15-36 TT* 16 09 42.565776 -39 19 41.09520   15.30 13.89 13.57 11.68 ~ 27 0
24 WSB 4 TT* 16 18 50.3 -26 10 08   17.3       ~ 13 0
25 WSB 18 TT* 16 24 59.74128 -24 56 00.8340   18.9   15.71 13.78 M2.5-M4.5 29 0
26 IRAS 16220-2452 TT* 16 25 02.115744 -24 59 32.40528       14.64 13.12 M3-M5.5 38 0
27 Haro 1-4 Or* 16 25 10.508136 -23 19 14.78820       13.15   K4e 70 0
28 Haro 1-5 TT* 16 26 18.413736 -25 20 55.87404           ~ 19 0
29 BKLT J162620-240854 TT* 16 26 20.9883194977 -24 08 51.870701161     16.52 14.87 13.11 M2 29 0
30 DoAr 26 Em* 16 26 34.90 -23 45 40.6   16.9       ~ 10 0
31 EM* SR 24A TT* 16 26 58.5027167088 -24 45 36.698300286       14.15 12.87 K1 94 0
32 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3198 1
33 2MASS J19022213-3655409 TT* 19 02 22.1302451077 -36 55 40.960838092   15.17 13.72 12.5   K2IV 37 0
34 NAME CrA Complex reg 19 15 00.0 -37 30 00           ~ 103 1
35 EM* AS 353 Or* 19 20 30.9919486938 +11 01 54.604157558   13.22 12.21     K5 184 1
36 LDN 673 DNe 19 20 54.4 +11 13 12           ~ 69 0
37 L 565-62 PM* 20 07 48.0521955871 -31 45 29.072386749   13.80 12.25 11.885   M2V(e) 27 0
38 CD-30 17706 WD* 20 10 56.8485174654 -30 13 06.629141494 11.654 12.286 12.242 12.311 12.381 DA3.1 228 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2006A&A...446..201M and select 'bookmark this link' or equivalent in the popup menu


2021.07.29-23:08:48

© Université de Strasbourg/CNRS

    • Contact