2003A&A...410..269M

Query : 2003A&A...410..269M

2003A&A...410..269M - Astronomy and Astrophysics, volume 410, 269-282 (2003/10-4)

The short period multiplicity among T Tauri stars.

MELO C.H.F.

Abstract (from CDS):

We present the results of high-resolution spectroscopic observations carried out over three years aimed at estimating the short-period (Porb<100days) binary frequency of a sample of T Tauri stars in Oph-Sco, Cha, Lup, CrA star forming regions (SFRs), already observed with high angular resolution techniques by Ghez et al. (1993AJ....106.2005G) and by Ghez et al. (1997ApJ...481..378G) to detect wider components. When combining all four SFRs, the short-period binary frequency is indistinguishable from that found by Duquennoy & Mayor (1991A&A...248..485D) for the solar-type field stars which is also consistent with the previous result obtained by Mathieu (1992, IAU Colloq., 135, 30 and 1994ARA&A..32..465M). When Oph-Sco is analyzed separately, it seems that there is an excess of short-period binaries of a factor 2-2.5. On the contrary, short-period binary systems seem to be absent in the sample containing stars in Cha/Lup/CrA. Such a trend was equally found by Mathieu (1992, IAU Colloq., 135, 30) in Taurus. An excess of spectroscopic systems among the components of visual multiple systems is also observed.

Abstract Copyright: ∼

Journal keyword(s): stars: binaries: close - stars: formation

CDS comments: Table 1 : NTTS 160815-1857 = NTTS 160814-1857.

Simbad objects: 99

goto Full paper

goto View the references in ADS

Number of rows : 99
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* SZ Cha Or* 10 58 16.7500775160 -77 17 17.185749900     12.68   10.62 K0e 124 0
2 Hen 3-545 Or* 10 59 06.9715593000 -77 01 40.309233240   12.91 11.136   9.596 K4Ve 216 0
3 V* CS Cha Or* 11 02 24.8763629208 -77 33 35.667131796   12.88 11.69   10.123 K2Ve 230 0
4 V* CT Cha Or* 11 04 09.0989256840 -76 27 19.329779664   13.44 13.00   10.89 K7Ve 130 0
5 Ass Cha T 2-21 TT* 11 06 15.3471261840 -77 21 56.720362608   12.58 11.01   9.35 G5Ve 131 0
6 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1154 1
7 V* DI Cha Or* 11 07 20.7276076008 -77 38 07.308086352   12.02 10.74 10.72   G2Ve 168 0
8 Ass Cha T 1-15 Or* 11 07 43.6610412264 -77 39 41.134236408   17.05 15.34   12.67 K5Ve 78 0
9 Ass Cha T 1-16 Or* 11 07 57.9428053584 -77 38 44.977882344   15.1 14.2   13.04 K4-7 74 0
10 V* VW Cha Or* 11 08 01.502064 -77 42 28.87524 13.91 14.165 12.761 12.653 10.69 K7+M0 187 0
11 HD 97048 Ae* 11 08 03.3109731720 -77 39 17.490777444 9.03 8.76 9.00   8.64 A0Vep 543 0
12 V* HP Cha TT* 11 08 15.216432 -77 33 53.17020   14.33 12.77 12.11   K3+G5e 114 0
13 V* HP Cha A * 11 08 15.4974157248 -77 33 53.446498956           K6e 85 0
14 NAME Cha IR Nebula TT* 11 08 38.702 -77 43 51.54           M5.5 72 0
15 V* VZ Cha Or* 11 09 23.7739008528 -76 23 20.857480836   13.82 12.94   12.14 K7e 140 0
16 HD 97300 Ae* 11 09 50.0199904704 -76 36 47.718191232   9.41 9.20   8.82 B9V 176 1
17 Ass Cha T 1-23 Or* 11 09 53.4189070920 -76 34 25.652641116   13.9 19.50 15.10 13.52 G9IIIe 96 0
18 V* WX Cha Or* 11 09 58.666944 -77 37 09.03432   14.93 13.85 14.23 12.20 M1+M5 103 0
19 V* WW Cha Or* 11 10 00.0802739160 -76 34 57.963853416   14.74 14.10   10.95 ~ 154 0
20 V* WY Cha Or* 11 10 07.0339153464 -76 29 37.674167388   15.29 13.87   11.62 K8Ve 88 1
21 CHX 18N TT* 11 11 46.3370290776 -76 20 08.948823324   13.27 11.96   10.37 K5IVe 80 1
22 Sz 41 TT* 11 12 24.3973943352 -76 37 06.181395384   11.2 11.60   10.22 K7+M2.5 102 1
23 V* CV Cha Or* 11 12 27.7055693328 -76 44 22.302807396   12.02 10.98 10.51 9.76 G9Ve 194 1
24 Ass Cha T 2-54 TT* 11 12 42.6709132056 -77 22 22.943489160     11.103   9.653 G8+K7 92 2
25 NAME Cha II MoC 12 54 -77.2           ~ 337 0
26 Hen 3-854 Or* 13 05 20.6574078672 -77 39 01.506188880   13.88 12.40     K5 45 0
27 V* BM Cha Or* 13 08 06.2695235808 -77 55 05.329818156   16.77 14.60     K5 55 0
28 Sz 65 Or* 15 39 27.7716659160 -34 46 17.211087984   13.11 12.13 11.33 10.76 K7 100 0
29 Lupus 1 Cld 15 43 02.1 -34 09 06           ~ 286 0
30 CD-33 10685 Or* 15 45 12.8678037432 -34 17 30.644403036 12.47 11.56 10.224 9.60 8.685 K3Ve 272 1
31 V* GW Lup Or* 15 46 44.7290527536 -34 30 35.677420056   13.8       M1.5e 143 0
32 V* HM Lup Or* 15 47 50.6288371920 -35 28 35.404076028   15.941 14.748 14.337   M3e 83 0
33 THA 15-5 TT* 15 47 56.9427182064 -35 14 34.796420412   14.5 16.2     K7e 85 0
34 V* HN Lup Or* 15 48 05.2154956876 -35 15 53.295162846   16.083 14.377 13.726   M3.5e 61 0
35 V* GQ Lup Or* 15 49 12.1053805848 -35 39 05.058139788 12.19 12.76 11.66 11.15   K7Ve 290 1
36 Sz 77 TT* 15 51 46.9580885472 -35 56 44.112678504   12.0       K5.5 69 0
37 THA 15-8 TT* 15 53 41.1667402248 -39 00 37.115189856   11.6 11.5     ~ 13 0
38 THA 15-9 TT* 15 53 42.6872122728 -38 08 10.467552660   11.7 11.5     ~ 12 0
39 HD 142361 TT* 15 54 59.8695458688 -23 47 18.180029616   9.68 8.960   8.092 G3V 70 0
40 THA 15-12 Or* 15 56 09.2066646912 -37 56 06.126118692   13.12 11.93 11.45   M0e 421 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 Lupus 2 MoC 15 57 08 -37 47.1           ~ 114 1
43 WRAY 15-1388 TT* 15 57 24.0102960624 -42 40 04.569017736   15.290 13.973 13.626   K7/M0 20 0
44 Sz 128 TT* 15 58 07.315776 -41 51 48.02400   16.544 15.093 14.517   M1.5e 18 0
45 WRAY 15-1400 TT* 15 59 16.4717314824 -41 57 10.300018176   13.5 12.0     K7IVe 97 0
46 V* RY Lup Or* 15 59 28.3864710696 -40 21 51.249496176   12.62 9.90     G8/K1IV-V 223 0
47 Sz 130 TT* 16 00 31.0374709944 -41 43 36.988516560   15.82 14.71 13.56 12.46 M1.5 62 0
48 CD-22 11298 BY* 16 01 25.6301810064 -22 40 40.289030832   13.02 13.44     K1IV 64 0
49 V* V1154 Sco RS* 16 02 10.4340916128 -22 41 28.824128520   12.46 11.32 10.96   K5+K5 55 0
50 HD 325367 Or* 16 03 05.4915085848 -40 18 25.426727676   11.40 8.50     M0 356 0
51 Lupus 4 MoC 16 03 12.4 -42 07 43           ~ 152 0
52 HD 144007 TT* 16 05 15.2633667864 -40 19 10.356830220   10.64 9.14     K2(III) 20 0
53 V* HO Lup Or* 16 07 00.603672 -39 02 19.49316   13.94 13.17 13.03   M1e 66 0
54 THA 15-19 LP? 16 07 04.9708254672 -39 28 33.285460224   13.4 14.2     M4 10 0
55 THA 15-21 TT* 16 07 10.0694468880 -39 11 03.260683896   15.28 13.70 13.70 12.49 K7-M0 72 0
56 THA 15-20 TT* 16 07 11.5873449384 -39 03 47.492129340   16.25 14.58 14.11 12.92 M0.5 106 0
57 Sz 96 TT* 16 08 12.6308620920 -39 08 33.470354256   14.80 13.43 13.69 11.84 ~ 79 0
58 V* V1279 Sco Or* 16 08 22.4935277520 -39 04 46.427612052   14.99 13.66 11.70 11.21 M0.4 119 1
59 THA 15-29 Y*O 16 08 30.2687378568 -39 06 11.176056000   14.8 11.14 15.18 13.15 M4 64 0
60 V* V856 Sco Ae* 16 08 34.2870044544 -39 06 18.325711332 7.66 7.41 7.05 6.92   A9V_sh 388 0
61 THA 15-31 LP? 16 08 36.9025257864 -40 16 20.380514952   15.0 14     M4 22 0
62 V* V1193 Sco Or* 16 08 51.5693655096 -39 03 17.707587264   15.27 14.58 13.72 12.28 M4.5 70 0
63 THA 15-33 TT* 16 08 54.6849382512 -39 37 43.145069664   15.34 13.98 13.29   M1IVe 92 0
64 Lupus 3 SFR 16 09.6 -39 03           ~ 323 0
65 THA 15-37 Y*O 16 09 44.3607357216 -39 13 30.167581764   15.84 14.59 14.20 12.38 M2 60 0
66 HD 144965 Be* 16 10 10.5557672592 -40 07 43.767402492 6.71 7.206 7.114     B3Vne 65 0
67 THA 15-42 Y*O 16 10 51.5849835192 -38 53 13.767885384   15.89 14.48 14.44 12.95 M1e 73 0
68 Wa Oph 1 Or* 16 11 08.9057560608 -19 04 46.976720052     12.073   10.194 K2IV(e) 67 0
69 ScoPMS 45 BY* 16 11 20.5774543272 -18 20 55.035502656     12.49     K5IV 33 0
70 V* V866 Sco Or* 16 11 31.345632 -18 38 25.96200   13.98 12.63 12.81   K0e+K5e 281 0
71 Wa Oph 2 Or* 16 11 59.2702332696 -19 06 53.316517068     11.66 11.57   K2Ve 66 0
72 BD-18 4244 Or* 16 12 40.5144406080 -18 59 28.267620432   12.15 10.829   9.235 K0IV(e) 90 0
73 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1330 1
74 Haro 1-4 Or* 16 25 10.508136 -23 19 14.78820       13.15   K4e 73 0
75 CD-24 12683 TT* 16 25 19.2498737256 -24 26 52.809731340   11.36 10.55   9.05 G9V 48 0
76 EM* SR 4 Or* 16 25 56.1659023848 -24 20 48.240627072     12.80 11.7 10.7 K0:Ve 186 1
77 Haro 1-6 Or* 16 26 03.0276684144 -24 23 36.188140848   14.15 14.01 12.38 10.80 K0 217 2
78 DoAr 24 TT* 16 26 17.0743951968 -24 20 21.594730920   16.06 14.21 14.02 11.57 K7.5V 112 1
79 GSS 31 TT* 16 26 23.3684537424 -24 20 59.579380248   15.9 14.70 14.33 11.53 K0e 143 1
80 EM* SR 24A TT* 16 26 58.5134422944 -24 45 36.722580480       14.15 12.87 K1 106 0
81 CD-24 12689 Or* 16 27 40.2857881416 -24 22 04.130226300   12.91 11.533 11.11 10.00 K5e 283 0
82 EM* SR 20 Or* 16 28 32.6876536896 -24 22 45.008526648   16.23   12.59   G7 82 0
83 EM* SR 13 Or* 16 28 45.2768168328 -24 28 18.905579112     13.60 12.40 10.9 M2e 133 0
84 NAME Sco-Oph Cloud ? 16 30 00 -21 30.0           ~ 16 0
85 Haro 1-14 Or* 16 31 05.1623543808 -24 04 40.307366316       14.04   ~ 53 0
86 V* V2131 Oph Or* 16 31 15.7445171496 -24 34 02.161097472   12.0 12.05 11.06 10.13 ~ 96 0
87 ROXs 43A TT* 16 31 20.1191847456 -24 30 05.057116128   11.89 10.93     G5IVe 48 0
88 Haro 1-16 Or* 16 31 33.4634997336 -24 27 37.158728076   14.02 12.80     K3e 224 0
89 V* V1003 Oph TT* 16 34 09.1696133088 -15 48 16.776092124     13.44     G5 98 0
90 EM* AS 209 TT* 16 49 15.3034917000 -14 22 08.643317664   12.62 11.28     K4Ve 390 0
91 2MASS J19000157-3637054 TT* 19 00 01.5743588376 -36 37 05.510254656   15.19 13.93     Me 24 0
92 V* S CrA Or* 19 01 08.597088 -36 57 19.89504   11.76 10.91 11.41   G0Ve+K0Ve 270 0
93 V* V709 CrA Or* 19 01 34.8589591776 -37 00 56.579123412   12.70 11.03     K1IV 63 0
94 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 490 0
95 V* R CrA Ae* 19 01 53.6764322232 -36 57 08.299341828 12.781 12.651 11.917 11.242 10.412 B5IIIpe 478 1
96 V* T CrA Ae* 19 01 58.7902764120 -36 57 50.339720880     11.67     F0 167 0
97 V* VV CrA Or* 19 03 06.7410913704 -37 12 49.686912432   16.45 14.67 14.12 11.62 K7 119 0
98 NAME Upper Scorpius B As* ~ ~           ~ 12 0
99 NAME Upper Scorpius A As* ~ ~           ~ 16 0

To bookmark this query, right click on this link: simbad:objects in 2003A&A...410..269M and select 'bookmark this link' or equivalent in the popup menu