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X-rays from Massive Star Fo ｒ ming Region (YSO)

X-rays from Massive Star Fo ｒ ming Region (YSO). ？ Sgr B2 、 Arches, Mon R2 Herbig Ae/Be stars. Sgr B2. Cluster of Massive Stars. No10: Associated to UC HII regions No13: No association to UC HII regions. No13 No10. ｋ T ～ 10(4.1-30) N H ～ 4.0(1.9-8.8 )

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X-rays from Massive Star Fo ｒ ming Region (YSO)

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  1. X-rays from Massive Star Foｒming Region (YSO) ？ Sgr B2、Arches, Mon R2 Herbig Ae/Be stars

  2. Sgr B2 Cluster of Massive Stars. No10: Associated to UC HII regions No13: No association to UC HII regions No13 No10

  3. ｋT～10(4.1-30) NH～4.0(1.9-8.8) Lx~ 13 x1032erg/s ｋT～4.8(> 1.1) NH～4.0(2.4-7.3)10２３ Lx~8 x1032 erg/s Total Lx~1033 erg/s  Each Lx～ 1032 erg/s No10: Strong iron line (Abundance ~5M◎) No13: Weak iron line

  4. Arches Cluster ●IR；　No21, 23, 26: High mass (Initial mass > 100M◎) ●Radio；AR1, 4

  5. Name kT NH L x (keV) (1023Hcm-2) (1033 erg s-1) 26 2.4(1.3-5.6) 6.9(4.5-11.2) 2.8(2.3-3.4) 21(AR4) 1.3(0.6-2.5) 9.3(5.6-15.5) 3.9(3.1-4.7) 23(AR1) 1.6(1.0-2.7) 9.9(6.514.8) 5.0(4.2-6.0) Irradiation by the Arches X-ray Total luminosity ~1035 ergs/s 10 time larger than the present value.One possibility is that the Arches cluster may be brighter in the past.

  6. 2.5 M◎ K More massive than B H-K Mon R2 Cloud

  7. Name kT NHLx (keV) (1022Hcm-2) (1031erg/s) IRS 1SW 1.9(1.3-2.8) 4.7(3.5-6.4) 1 (0.6-2.0) aS 2.6(1.6-6.2) 6.0(4.0-9.2) 0.6(0.4-1.6) IRS 2 10.9( > 2.0) 9.1(5.7-17)0.6(0.5-2.0) kT ～ 2 - 10keV, Lx～ 1031 erg/s Rapid variability

  8. X-ray Properties with Chandra

  9. ASCA detection of Herbig Ae/Be Stars Detection rate ~40% (>1030 ergs/s)

  10. Temperature vs Wind Velocity of Herbig Ae/Be 2~3keV

  11. MWC 297 : O9 - B1.5 NH～2.4×1022 (Av =10 agree with optical) Temperature Excursion kT= 2.7keV 6.7keV 3.2 keV 6.7keV 2.7keV 3.2keV

  12. Temperature Excursion of Individual Herbig Ae/Be Quiescent(●), Flare (□), Decay (△)

  13. Unified View of X-ray emission from Stars

  14. Ｕｎｉｆｉed Picture of X-rays From Stars 106 yrs

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