NUCLEAR MOLECULAR GAS BAR PERPENDICULAR TO THE STELLAR BAR IN NGC-3351

被引:59
作者
DEVEREUX, NA
KENNEY, JDP
YOUNG, JS
机构
[1] NEW MEXICO STATE UNIV,DEPT ASTRON,LAS CRUCES,NM 88003
[2] CALTECH,OWENS VALLEY RADIO OBSERV,PASADENA,CA 91125
[3] UNIV MASSACHUSETTS,FIVE COLL RADIO ASTRON OBSERV,AMHERST,MA 01003
关键词
D O I
10.1086/116100
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
New interferometric observations of the molecular gas within the early type barred spiral galaxy NGC 3351 (M95) have revealed a nuclear molecular gas bar approximately 1 kpc long, that is aligned perpendicular to the large scale stellar bar. The mass of gas associated with the nuclear molecular gas bar is approximately 1.8 x 10(8) M. representing approximately 25% of the total molecular gas mass. NGC 3351 is associated with other distinguishing morphological characteristics including a nuclear ring of H II regions, which brought NGC 3351 early notoriety as a "hotspot nucleus," and a much larger ring of H II regions that encircles the stellar bar. Collectively, the distinctive morphology of the neutral and ionized medium within NGC 3351 can be understood in terms of resonances associated with a stellar bar pattern rotating at an angular velocity of approximately 60 km/s kpc-1.
引用
收藏
页码:784 / 792
页数:9
相关论文
共 49 条
  • [11] NEARBY STARBURST GALAXIES
    DEVEREUX, NA
    [J]. ASTROPHYSICAL JOURNAL, 1989, 346 (01) : 126 - 135
  • [12] INFRARED CHARACTERISTICS OF THE NUCLEI OF NORMAL GALAXIES
    DEVEREUX, NA
    BECKLIN, EE
    SCOVILLE, N
    [J]. ASTROPHYSICAL JOURNAL, 1987, 312 (02) : 529 - 541
  • [13] ACCURATE OPTICAL POSITIONS OF BRIGHT GALAXIES
    DRESSEL, LL
    CONDON, JJ
    [J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1976, 31 (02) : 187 - 236
  • [14] HIGH-RESOLUTION OBSERVATIONS, KINEMATICS, AND DYNAMICS OF THE BARRED SPIRAL NGC 1073
    ENGLAND, MN
    GOTTESMAN, ST
    HUNTER, JH
    [J]. ASTROPHYSICAL JOURNAL, 1990, 348 (02) : 456 - 466
  • [15] DYNAMICAL MODELS - THE BARRED SPIRAL GALAXY NGC-1300
    ENGLAND, MN
    [J]. ASTROPHYSICAL JOURNAL, 1989, 344 (02) : 669 - 684
  • [16] GERIN M, 1988, ASTRON ASTROPHYS, V203, P44
  • [17] HANDA T, 1990, PUBL ASTRON SOC JPN, V42, P1
  • [18] HUCHTMEIER WK, 1985, ASTRON ASTROPHYS, V143, P216
  • [19] MOLECULAR GAS BAR AND EXPANDING MOLECULAR RING IN THE NUCLEUS OF THE SPIRAL GALAXY MAFFEI-2
    ISHIGURO, M
    KAWABE, R
    MORITA, KI
    OKUMURA, SK
    CHIKADA, Y
    KASUGA, T
    KANZAWA, T
    IWASHITA, H
    HANDA, K
    TAKAHASHI, T
    KOBAYASHI, H
    MURATA, Y
    ISHIZUKI, S
    NAKAI, N
    [J]. ASTROPHYSICAL JOURNAL, 1989, 344 (02) : 763 - 769
  • [20] A MOLECULAR GAS BAR FUELING STARBURST ACTIVITY IN GALAXY IC342
    ISHIZUKI, S
    KAWABE, R
    ISHIGURO, M
    OKUMURA, SK
    MORITA, KI
    CHIKADA, Y
    KASUGA, T
    [J]. NATURE, 1990, 344 (6263) : 224 - 226