1998A&A...339..113M


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.02CET20:48:24

1998A&A...339..113M - Astronomy and Astrophysics, volume 339, 113-122 (1998/11-1)

Using polarimetry to check rotation alignment in PMS binary stars. Principles of the method and first results.

MONIN J.-L., MENARD F. and DUCHENE G.

Abstract (from CDS):

We present a new method to use polarimetric measurements to estimate the relative orientations of the star+disk system in each component of Pre Main Sequence (PMS) T Tauri binary stars. The principles of the method are presented, together with a review of polarimetric data available in the literature on wide systems (8-40") in Taurus. We show that this method can be subject to a bias introduced by the interstellar polarization, but we find that in four sources that are not affected by this bias, the rotation axes of both components are preferentially parallel. We also find one system where the axes are clearly not parallel. Because it concerns wide binaries, this alignment is thought to result from initial binary formation itself rather than via a posteriori tidal interactions. The method is promising but requires the use of more accurate polarimeters. In order to test the possibility to study tighter systems, we have also obtained imaging polarimetric measurements and spectra for each components of closer binaries (<3.2"). Our first polarimetric measurements lack S/N, but the spectra of individual components of these close binaries provide information on their respective spectral types and their accretion rate through Hα equivalent widths and fluxes. We use these spectra to confirm the nature and the pairing tendency of the TTS under study. Implications on the binary formation mechanism are discussed.

Abstract Copyright:

Journal keyword(s): techniques: polarimetric - techniques: spectroscopic - stars: pre-main sequence - stars: binaries: close - circumstellar matter

Simbad objects: 29

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Number of rows : 29

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 2MASS J03542950+3203013 TT* 03 54 29.5045697196 +32 03 01.407089906   12.71 11.85     G0 48 0
2 2MASS J03543017+3203043 TT* 03 54 30.17472 +32 03 04.3488   13.25 12.31     G5 50 0
3 2MASS J04034930+2610520 TT* 04 03 49.308 +26 10 52.03   15.99 14.52     M3.9 62 0
4 2MASS J04035084+2610531 TT* 04 03 50.8393021714 +26 10 53.015575434   15.57 14.17     M2.8 52 0
5 HD 283447 Or* 04 14 12.9232870093 +28 12 12.378540314 13.17 12.07 10.68 9.45 8.67 K3Ve 384 0
6 V* FM Tau Or* 04 14 13.5839505100 +28 12 49.166941548 14.44   13.80 13.64   M0/2e 193 0
7 LDN 1521D DNe 04 27 46.5 +26 18 52           ~ 215 0
8 V* DH Tau Or* 04 29 41.5520056304 +26 32 58.123761109 15.14 14.62 13.10 13.01   M1Ve 269 0
9 V* DI Tau Or* 04 29 42.4736177473 +26 32 49.119618729 16.39 15.20 13.60     M0Ve 197 0
10 V* UX Tau B TT* 04 30 03.5778750604 +18 13 49.477040697       13.33   M1Ve 63 0
11 V* UX Tau A TT* 04 30 03.9931880444 +18 13 49.476948664   12.92 11.15     K2Ve 331 0
12 V* UX Tau Or* 04 30 03.99626 +18 13 49.4355 11.23 11.84 10.80 9.83 9.05 K2Ve+M1Ve 317 0
13 V* DK Tau A * 04 30 44.2409691803 +26 01 24.730398215           K5Ve 248 0
14 V* DK Tau Or* 04 30 44.243376 +26 01 24.65328 13.32 14.59 13.05 12.08   K7e+K7e 301 0
15 V* HK Tau Or* 04 31 50.5722969258 +24 24 17.775488652 16.81   15.10     M0.5 300 1
16 V* V710 Tau B TT* 04 31 57.7916444904 +18 21 37.947621353   15.07 13.55 13.98   M0.5/1e 51 0
17 V* V710 Tau ** 04 31 57.79848 +18 21 36.9396           ~ 154 0
18 V* V710 Tau A TT* 04 31 57.8032267772 +18 21 34.726898440       13.87   M2/3e 154 0
19 V* FY Tau Or* 04 32 30.5786392247 +24 19 57.364725369 17.83 18.05 13.49 14.17   M0.1 100 0
20 V* FZ Tau Or* 04 32 31.7629319321 +24 20 03.057541003 16.15     15.04   M0 122 0
21 V* GH Tau Or* 04 33 06.2181025969 +24 09 33.628411049     13.20 12.59   M3Ve 169 0
22 V* V807 Tau Or* 04 33 06.6303920517 +24 09 55.044051684   12.10 11.21 11.18   K7 133 2
23 V* GI Tau Or* 04 33 34.0608378045 +24 21 17.067391746 14.34   13.70 12.15 11.06 K5Ve 257 1
24 V* GK Tau Or* 04 33 34.5626781676 +24 21 05.854541262 15.50   13.00 12.02 10.62 K7:Ve 277 0
25 V* HN Tau Or* 04 33 39.3612389736 +17 51 52.302839814   14.76 13.40 13.05   K5e 223 0
26 V* HP Tau Or* 04 35 52.7821592361 +22 54 23.158368128 17.39 14.9 14.90     K2-5e 193 0
27 CoKu HP Tau G3 TT* 04 35 53.4991854163 +22 54 09.000431829 18.21   14.8     M0.6 59 0
28 CoKu HP Tau G2 Or* 04 35 54.1553246504 +22 54 13.404170652 13.63 12.31 11.158 10.14 9.172 G2e 113 0
29 Haro 6-37 Or* 04 46 58.97952 +17 02 38.1948           K7e+M1e 105 0

    Equat.    Gal    SGal    Ecl

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2020.12.02-20:48:24

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