Unveiling extensive clouds of dark gas in the solar neighborhood

被引:361
作者
Grenier, IA [1 ]
Casandjian, JM
Terrier, R
机构
[1] Univ Paris 07, CEA, CNRS, DSM,DAPNIA,Serv Astrophys, F-91191 Gif Sur Yvette, France
[2] CEA, CNRS, Grand Accelerateur Natl Ions Lourds, F-14076 Caen, France
[3] Univ Paris 07, CNRS, CEA, F-75005 Paris, France
关键词
D O I
10.1126/science.1106924
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
From the comparison of interstellar gas tracers in the solar neighborhood (HI and CO lines from the atomic and molecular gas, dust thermal emission, and gamma rays from cosmic-ray interactions with gas), we unveil vast clouds of cold dust and dark gas, invisible in HI and CO but detected in gamma rays. They surround all the nearby CO clouds and bridge the dense cores to broader atomic clouds, thus providing a key link in the evolution of interstellar clouds. The relation between the masses. in the molecular, dark, and atomic phases in the local clouds implies a dark gas mass in the Milky Way comparable to the molecular one.
引用
收藏
页码:1292 / 1295
页数:4
相关论文
共 31 条
  • [1] MOLECULAR CLOUDS WITHOUT DETECTABLE CO
    BLITZ, L
    BAZELL, D
    DESERT, FX
    [J]. ASTROPHYSICAL JOURNAL, 1990, 352 (01) : L13 - L16
  • [2] SURVEY OF INTER-STELLAR H-I FROM L-ALPHA ABSORPTION-MEASUREMENTS .2.
    BOHLIN, RC
    SAVAGE, BD
    DRAKE, JF
    [J]. ASTROPHYSICAL JOURNAL, 1978, 224 (01) : 132 - 142
  • [3] Properties of dark matter haloes
    Combes, F
    [J]. NEW ASTRONOMY REVIEWS, 2002, 46 (12) : 755 - 766
  • [4] The milky way in molecular clouds: A new complete CO survey
    Dame, TM
    Hartmann, D
    Thaddeus, P
    [J]. ASTROPHYSICAL JOURNAL, 2001, 547 (02) : 792 - 813
  • [5] DAME TM, 2004, ASP C SERIES, P66
  • [6] H I IN THE GALAXY
    DICKEY, JM
    LOCKMAN, FJ
    [J]. ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1990, 28 : 215 - 261
  • [7] Egret observations of Monoceros: Diffuse gamma-ray emission in the outer Galaxy
    Digel, SW
    Grenier, IA
    Hunter, SD
    Dame, TM
    Thaddeus, P
    [J]. ASTROPHYSICAL JOURNAL, 2001, 555 (01) : 12 - 22
  • [8] EADIE WT, 1971, STAT METHODS EXPT PH
  • [9] COSMIC-RAY DISTRIBUTION AND THE DYNAMIC BALANCE IN THE LARGE MAGELLANIC CLOUD
    FICHTEL, CE
    OZEL, ME
    STONE, RG
    SREEKUMAR, P
    [J]. ASTROPHYSICAL JOURNAL, 1991, 374 (01) : 134 - 141
  • [10] Extrapolation of galactic dust emission at 100 microns to cosmic microwave background radiation frequencies using FIRAS
    Finkbeiner, DP
    Davis, M
    Schlegel, DJ
    [J]. ASTROPHYSICAL JOURNAL, 1999, 524 (02) : 867 - 886