W4 West(AFGL 333) 領域におけるアンモニア分子輝線観測 - PowerPoint PPT Presentation

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W4 West(AFGL 333) 領域におけるアンモニア分子輝線観測

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  1. W4 West(AFGL 333)領域におけるアンモニア分子輝線観測 副島隆史 (大分大学M2) 仲野誠(大分大学) 面高俊宏, 半田利弘, 亀﨑達也, Ross Burns, 馬場達也, 松尾光洋, 宮崎竜之介, 吉田友哉(鹿児島大学) 永山匠, 砂田和良, James Chibueze, 久野成夫(NAOJ) 31th NRO Users Meeting (2013)

  2. Introduction W3 Main W4 • Interaction HII region with molecular cloud • W3/W4 HII region - High density layer - - W3Main, W3(OH), AFGL333 • AFGL333-Ridge (Rivera-Ingraham et al. 2013) - 2.0 kpc(Xu et al. 2006) - chemical properties of massive clumps (Sakai et al. 2007) W3 W3(OH) AFGL333-Ridge Fig.2. IR image by Spitzer IRAC Fig.1. Optical image by Roger Rao

  3. Observations – Backup program • Instruments • NRO 45m telescope • H22 + SAM45 • Period • 2013/1/26 – 2013/6/11 (total ~ 135 h) • Lines • NH3(J,K) = (1,1), (2,2), (3,3) and H2O maser - velocity resolution ~ 0.38 km/s - HPBW ~73’’ • Method • 1grid=37.5”×37.5”, total 267 positions • NewStar – Noise level Trms ~ 0.043 K

  4. Results • NH3 • Main cloud - 11.8’×6.2’ (6.9×3.6 pc) - dent in the east • BRC (SFO 05) - northeast • H2O • 2 H2O masers - one is newly detected maser BRC preliminary dent (K km/s) Fig.3. NH3(1,1) Integrated intensity map

  5. Results • τ = 0.63 ±0.14 • Trot = 16.1 ± 0.4 [K] • N(NH3) = 1.55×1015 [cm-2] • R = 0.9×2.9 [pc] • MLTE = 2600 M☉,Mvir = 1800 M☉ preliminary Ta(K) preliminary (K km/s) (km/s) Fig.4. observed spectra in the NH3 Fig.5. The black eclipse shows the extent obtained N(NH3)

  6. Results 30 3.0 28 2.5 26 24 (km/s) 2.0 preliminary preliminary 22 (K) 20 1.5 18 16 1.0 14 Fig.6. Velocity width map Fig.7. Rotational temperature map • Broad velocity width - east • High temperature - north, east

  7. Discussion Broad velocity widthand high Trot in the east 1.4GHz (CGPS) • 2 clusters • - IRAS 02245+6115 • - IRAS 02244+6117 IRAS 02244+6117 b (degree) preliminary • IRAS 02245+6115 • -B0.5 star • - compact HII region • (Hughes & Viner 1982) IRAS 02245+6115 Fig.8. IR image of the AFGL333-Ridge (left). The green contour shows the extent of the compact HII region(right).

  8. Discussion Broad velocity widthand high Trot in the east 3.0 Cluster position Center position 2.5 preliminary (km/s) 2.0 b (degree) preliminary 1.5 Fig.10. The relation of HII region to Trot 1.0 • Broad velocity width and high Trot and in the east would be originated with compact HII region. l (degree) Fig.9. The relation of HII region to velocity-width