Table 6
Properties of TTS binaries and multiples(*) in Taurus resolved by the ROSAT HRI.
| Designation | ST | V [mag] | α2000 [hh:mm:ss] | δ2000 [dd:′ ′:″ ″] | expo [s] | ML | cts | dα [s] | dδ [″] | offax [′] | HR |  |
 |
 |
per. [days] | sep [″] | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 201089/201623 Zinnecker, be: dRA = −1.8 s, dDEC = −1.39″ | |||||||||||||||||
| GK Tau &/c | c(a) + ? | K7 | 12.14 | 04 33 34.5 | 24 21 07 | 20756 | 702 | 347 ± 19 | 0.03 | 2.0 | 0.39 | 0.45 ± 0.09 | 30.45 ± 0.02 | 33.63(b) | l8.70(e) | 4.65(h) | 2.4(b) |
| GI Tau | c(a) | K6 | 13.01 | 04 33 34.1 | 24 21 18 | 20762 | 394 | 222 ± 15 | 0.15 | −3.0 | 0.37 | ≤0.72 | 30.24 ± 0.03 | 33.55(b) | 11.20(e) | 7.02(g) | 12.2(c) |
| 201058 Walter, be: dRA = 1.1s, dDEC = −1.73″ | |||||||||||||||||
| 040047+2603 E(**) | W(i) | M2 | 14.17 | 04 03 50.9 | 26 10 55 | 4995 | 868 | 219 ± 15 | 0.04 | 0.1 | 0.17 | 0.11 ± 0.01 | 30.42 ± 0.03 | 33.15(b) | ≤ 10.00(a) | 23.5(b) | |
| 040047+2603 W &/c(**) | W(i) + ? | M2 | 14.52 | 04 03 49.2 | 26 10 54 | 4994 | 127 | 50 ± 7 | 0.02 | 0.0 | 0.29 | 0.35 ± 0.06 | 29.95 ± 0.07 | 33.05(b) | 1.5(b) | ||
| 201617 Zinnecker | |||||||||||||||||
| HP Tau | w(a) | K2 | 13.16 | 04 35 53.1 | 22 54 24 | 5551 | 49 | 27 ±6 | 0.06 | 0.7 | 0.22 | 0.44 ± 0.08 | 30.21 ± 0.10 | 33.97(b) | 15.40(e) | 5.90(h) | |
| CoKu HP Tau/G2 | w(a) | G0 | 11.10 | 04 35 54.4 | 22 54 12 | 5553 | 450 | 144 ±12 | −0.02 | 0.6 | 0.54 | 0.71 ± 0.04 | 30.80 ± 0.04 | 34.56(b) | 100.00(a) | 1.20(h) | 20.9(b) |
| CoKu HP Tau/G3 | w(a) | K7 | 14.80 | 04 35 53.5 | 22 54 10 | 6150 | ≤108 | 0.47 | ≤30.85 | 33.69(b) | 9.7(b) | ||||||
| 201622 Zinnecker, bc: dRA = −1.8 s, dDEC = −2.62″ | |||||||||||||||||
| LkHα 332/G1 &/c | W(b) + ? | M1 | 15.10 | 04 42 06.9 | 25 23 04 | 15785 | 53 | 56 ± 8 | −0.43 | −1.3 | 0.28 | 0.27 ± 0.01 | 30.16 ± 0.07 | 33.87(b) | 0.22(j) | ||
| Coku LkHα 332 | w(b) | K7 | 14.74 | 04 42 06.9 | 25 23 11 | 18670 | ≤51 | 0.23 | ≤29.71 | 33.59(b) | 10.10(e) | 6.6(a) | |||||
| 201057/202029 Neuhäuser/Walter, bc: dRA = −0.7 s, dDEC = −1.00″ | |||||||||||||||||
| 035135+2528 SE(**) | w(i) | K0 | 12.67 | 03 54 35.9 | 25 37 09 | 4489 | 88 | 31 ±6 | 0.03 | −0.3 | 0.04 | 0.25 ± 0.11 | 29.83 ± 0.09 | 33.13(b) | 26.00(a) | 6.3(b) | |
| 035135+2528 NW(**) | w(i) | K3 | 13.79 | 03 54 35.6 | 25 37 12 | 5268 | ≤43 | 0.09 | ≤29.95 | 32.76(b) | ≤10.00(a) | 6.3(b) | |||||
| 202030/201053 Neuhäuser/Walter | |||||||||||||||||
| 040142+2150 NE(**) | w(i) | M3 | 15.09 | 04 04 39.8 | 21 58 22 | 8040 | 57 | 114 ± 11 | 0.02 | 2.2 | 0.43 | 0.46 ± 0.04 | 30.63 ± 0.04 | 32.84(b) | 20.00(a) | 7.2(b) | |
| 040142+2150 SW(**) | w(i) | M3 | 14.97 | 04 04 39.3 | 21 58 20 | 8872 | ≤111 | 0.33 | ≤30.58 | 32.91(b) | 12.00(a) | 7.2(b) | |||||
| 201838 Walter | |||||||||||||||||
| SAO 76411 A | w(i) | G1 | 8.85 | 04 02 53.6 | 22 08 12 | 12001 | 241 | 92 ± 10 | 0.00 | 0.5 | 0.30 | 0.50 ± 0.04 | 29.67 ± 0.04 | 34.33(k) | 12.50(d) | 7.0(a) | |
| SAO 76411 B | ? | K1 | 10.38 | 04 02 54.0 | 22 08 08 | 12000 | 130 | 56 ± 7 | −0.07 | 0.0 | 0.51 | 0.29 ± 0.03 | 29.55 ± 0.05 | 33.77(k) | ≤30.00(a) | 7.0(a) | |
| 201619 Zinnecker | |||||||||||||||||
| UX Tau A & C | w + w(a) | G5 | 10.69 | 04 30 04.0 | 18 13 47 | 4622 | 309 | 109 ± 11 | 0.13 | −1.4 | 0.04 | 063 ± 0.04 | 30.27 ± 0.04 | 33.59(b) | 25.40(e) | 2.70(h) | 3.3(b) |
| UX Tau B | w(a) | M2 | 13.67 | 04 30 03.4 | 18 13 50 | 5075 | c118 | 0.03 | ≤30.36 | 33.36(b) | 10.00(e) | 8.7(b) | |||||
| 202156 Neuhäuser | |||||||||||||||||
| V819 Tau | w(a) | K7 | 13.24 | 04 19 26.2 | 28 26 16 | 7604 | 589 | 178 ± 14 | 0.05 | 0.0 | 0.15 | 0.69 ± 0.03 | 30.82 ± 0.03 | 33.47(f) | ≤15.00(a) | 5.60(g) | 10.5(c) |
| V819 Tau/c | ? | K1 | 2.15(l) | 04 19 26.9 | 28 26 14 | 7604 | ≤27 | 0.20 | ≤29.76 | 32.01(l) | 10.5(c) | ||||||
Notes. (*)For all pointings ROSAT Observation Request Number and PI are given. A bore sight correction was applied to some fields indicated by be and the offset. (**)NTTS object. (a)Herbig & Bell (1988), (b)Hartigan et al. (1994), (c)Leinert et al. (1993), (d)Patterer et al. (1993), (e)Hartmann & Stauffer (1989), (f)Kenyon & Hartmann (1995), (g)Shevchenro et al. (1991), (h)Bouvier et al. (1993), (i)Walter et al. (1988), (j)Ghez et al. (1993), (k)derived using the photometry in (1988), (l)derived using the photometry in (1998) assuming a bolometric correction of 2.
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