X-ray Study of Low-mass Young Stellar Objects in the ρ Ophiuchi ...
X-ray Study of Low-mass Young Stellar Objects in the ρ Ophiuchi ...
X-ray Study of Low-mass Young Stellar Objects in the ρ Ophiuchi ...
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42 CHAPTER 5. CHANDRA OBSERVATIONS OF THE <strong>ρ</strong> OPHIUCHI CLOUDTable 5.2 (Cont<strong>in</strong>ued)No. Counts * R.A. † Decl. † < kT > ‡ log(< EM >) ‡ N ‡ H Flux § L § X Red-χ 2‖ Comment(J2000) (J2000) (keV) (cm −3 ) (10 22 cm −2 )BF-17 106.5 27 04.59 27 14.3 1.3(1.1–1.9) 52.3(52.0–52.6) ... ### 0.9 1.7 ... ### = A-79,Quiescent2.0(1.1–8.1) 53.3(52.9–53.6) ... 16.6 17.8 ... ### = A-79,FlareBF-18 # 30.6 27 05.44 41 14.4 1.0(fixed) 54.0(52.5–54.6) 56.7(9.0– 0.8 91.6 1.35(6)102.3)5.0(fixed) 51.6(51.3–52.2) 8.6(3.4–36.4) 0.8 0.6 0.81(6)BF-19 38.8 27 05.95 26 17.7 1.2(0.6–3.3) 52.1(51.6–52.8) ... ### 0.6 1.2 ... ### = A-81BF-20 58.6 27 06.60 41 50.0 0.9(0.5–1.3) 52.0(51.6–53.0) 1.8(1.1–2.5) 0.4 0.9 0.88(12)BF-21 106.5 27 06.78 38 15.2 1.2(0.8–2.0) 52.8(52.2–53.5) 5.8(4.0–8.6) 1.6 5.1 0.69(18)BF-22 # 16.6 27 07.66 41 04.1 1.0(fixed) 53.6(52.9–54.1) 40.1(21.4– 0.5 32.2 0.16(3)70.9)5.0(fixed) 51.7(51.1–52.1) 17.0(4.5– 0.6 0.7 0.30(3)37.0)BF-23 # 13.6 27 08.40 39 40.3 1.0(fixed) 53.4(52.1–53.9) 38.4(9.9– 0.3 21.2 0.90(4)70.1)5.0(fixed) 51.4(50.6–51.9) 10.9(1.9– 0.4 0.3 1.06(4)38.7)BF-24 74.0 27 09.12 34 08.2 2.0(1.3–4.8) 51.8(51.4–52.3) 2.2(1.5–3.0) 0.8 0.7 0.94(11)BF-25 42.9 27 09.32 40 22.1 0.8(0.4–1.3) 52.9(52.1–54.2) 6.3(4.0–9.6) 0.6 8.2 1.55(10)BF-26 1141.2 27 09.44 37 19.0 3.8(2.9–5.2) 53.2(53.1–53.3) 8.2(7.4–8.8) 22.4 20.4 1.14(126) Quiescent5.8(3.8–9.5) 53.5(53.4–53.7) ... 71.8 52.5 ... FlareBF-27 122.8 27 11.17 40 46.9 3.1(1.5– 52.3(51.9–52.9) 6.6(4.4–9.8) 2.4 2.2 0.73(26) Quiescent22.7)# 5.0(fixed) 52.9(52.5–53.1) ... 14.7 10.4 ... FlareBF-28 217.8 27 11.73 38 32.4 3.8(2.0– 52.4(52.1–52.8) 6.5(4.8–9.1) 3.7 3.0 0.64(37) Quiescent11.2)2.3(1.2–4.5) 53.6(53.2–54.2) ... 32.7 40.9 ... FlareBF-29 # 12.6 27 12.60 40 52.5 1.0(fixed) 53.0(52.4–53.5) 24.1(13.1– 0.3 9.8 0.96(2)43.5)5.0(fixed) 51.3(50.7–51.7) 9.7(3.2–28.3) 0.3 0.3 1.90(2)BF-30 ‡‡ 4.5(m) 27 15.25 34 10.2 ... ... ... ... ... ...BF-31 1400.5 27 15.46 26 39.5 2.5(2.1–3.0) 53.0(52.9–53.1) 3.9(3.6–4.3) 12.0 10.4 1.08(125) Quiescent2.8(2.3–3.0) 54.0(53.9–54.1) ... 137.2 110.8 ... FlareBF-32 ‡‡ 4.5 27 15.46 41 21.4 ... ... ... ... ... ...BF-33 29.3 27 15.51 30 54.0 9.5(>0.5) 51.5(51.2–53.9) 3.8(1.9–15.3) 1.0 0.5 0.35(3)BF-34 # 33.3 27 15.55 33 01.8 1.0(fixed) 53.2(52.7–53.7) 19.4(11.0– 0.6 15.3 1.13(4)32.6)5.0(fixed) 51.8(51.5–52.0) 7.8(4.6–15.2) 1.1 0.8 0.64(4)BF-35 1086.9 27 15.92 38 43.6 3.3(2.6–4.2) 53.1(53.0–53.2) 3.0(2.6–3.1) 24.9 16.0 0.86(94) Quiescent5.9(4.1–8.0) 53.6(53.5–53.7) ... 124.2 62.6 ... FlareBF-36 ‖‖ 105.4 27 16.41 31 14.7 – see Table 6.6 –BF-37 ‡‡ 9.1 27 16.98 36 21.2 ... ... ... ... ... ...BF-38 # 19.0 27 17.47 36 27.1 5.0(fixed) 52.2(51.3–52.8) 41.8(5.4– 1.1 2.4 1.66(2)95.2)BF-39 155.4 27 17.56 28 56.3 6.3(>2.6) 52.2(52.0–52.6) 6.2(4.0–9.3) 4.0 2.6 0.75(27)BF-40 1299.2 27 18.17 28 52.5 1.9(1.6–2.3) 53.6(53.5–53.8) 8.0(7.3–9.0) 23.7 41.5 1.00(89) Quiescent3.4(2.5–5.6) 53.8(53.7–54.0) ... 87.2 84.2 ... FlareBF-41 ‡‡ 8.6 27 18.34 39 14.3 ... ... ... ... ... ...BF-42 514.0 27 18.48 29 05.7 1.2(1.0–1.4) 53.1(52.9–53.3) 3.2(2.8–3.7) 5.2 11.1 0.97(52) Quiescent