Detection of [OI] 63 mu m in absorption toward Sgr B2

被引：0

作者：

Baluteau, JP

Cox, P

Cernicharo, J

Pequignot, D

Caux, E

Lim, T

Swinyard, B

White, G

Kessler, M

Prusti, T

Barlow, M

Clegg, PE

Emery, RJ

Furniss, I

Glencross, W

Gry, C

Joubert, M

Liseau, R

Nisini, B

Saraceno, P

Serra, G

Armand, C

Burgdorf, M

DiGiorgio, A

Molinari, S

Price, M

Texier, D

Sidher, S

Trams, N

机构：

[1] UNIV PARIS 11, INST ASTROPHYS SPATIALE, F-91405 ORSAY, FRANCE

[2] OAN, E-28800 ALCALA DE HENARES, SPAIN

[3] CSIC, IEM, DPTO FIS MOL, E-28006 MADRID, SPAIN

[4] OBSERV PARIS, DAEC, F-92195 MEUDON, FRANCE

[5] UPS, CNRS, CESR, F-31028 TOULOUSE 04, FRANCE

[6] ISO SCI OPERAT CTR, LWS INSTRUMENT DEDICATED TEAM, E-28080 MADRID, SPAIN

[7] RUTHERFORD APPLETON LAB, DIDCOT OX11 0QX, OXON, ENGLAND

[8] UNIV LONDON QUEEN MARY & WESTFIELD COLL, LONDON E1 4NS, ENGLAND

[9] ESA, DIV ASTROPHYS, ISO SCI OPERAT CTR, E-28080 MADRID, SPAIN

[10] UCL, DEPT PHYS & ASTRON, LONDON WC1E 6BT, ENGLAND

[11] CNR, IST FIS SPAZIO INTERPLANETARIO, I-00044 FRASCATI, ITALY

来源：

ASTRONOMY & ASTROPHYSICS | 1997年 / 322卷 / 03期

关键词：

ISM: abundances; (ISM:); dust; extinction; (ISM:) H II regions; ISM: individual objects: Sgr B2; infrared: ISM: continuum; infrared: ISM: lines and bands;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A high signal-to-noise 52-90 mu m spectrum is presented for the central part of the Sagittarius B2 complex. The data were obtained with the Long Wavelength Spectrometer on board the Infrared Space Observatory (ISO). The [O I] 63 mu m line is detected in absorption even at the grating spectral resolution of 0.29 mu m. A lower limit for the column density of atomic oxygen of the order of 10(19) cm(-2) is derived. This implies that more than 40% of the interstellar oxygen must be in atomic form along the line of sight toward the Sgr B2 molecular cloud.

引用

页码：L33 / L36

页数：4

共 26 条

[1]

Allen C. W., 1973, Astrophysical Quantities

[2] ABUNDANCES OF THE ELEMENTS - METEORITIC AND SOLAR [J].