Search for HI in dwarf spheroidal galaxies

被引：17
作者：
Carignan, C
机构：
[1] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada
[2] Univ Montreal, Observ Mont Megant, Montreal, PQ H3C 3J7, Canada
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA | 1999年 / 16卷 / 01期
关键词：
Local Group; galaxies : ISM; galaxies : individual (Sculptor); galaxies : irregular; galaxies : structure; ISM : clouds;
D O I：
10.1071/AS99018
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
After reviewing the Hr content and distribution in extreme dwarf irregular (dIrr) and dwarf elliptical (dE) galaxies, previous searches for HI in dwarf spheroidal (dSph) galaxies will be discussed. I will report on the recent detections of HI probably associated with the Local Group (LG) dSph Sculptor and dIrr/dSph Phoenix, obtained with the ATCA, along with a similar detection in the Centaurus Group dSph CEN_41. Data obtained for Sculptor, using the Parkes Multibeam system, will also be presented and the advantage of the wide field for such nearby objects will be emphasised. Finally, the possible origin of the gas and the general problem of the missing ISM in dSph galaxies will be discussed.
引用
收藏
页码：18 / 23
页数：6
相关论文
共 25 条
  • [1] BEAULIEU S, 1999, UNPUB
  • [2] THE HI CONTENT OF THE LOCAL GROUP DWARF (SPHEROIDAL OR IRREGULAR QUESTIONABLE) GALAXY PHOENIX
    CARIGNAN, C
    DEMERS, S
    COTE, S
    [J]. ASTROPHYSICAL JOURNAL, 1991, 381 (01) : L13 - L16
  • [3] AT THE LOW-MASS END - LIGHT AND H-I DISTRIBUTION OF GR-8
    CARIGNAN, C
    BEAULIEU, S
    FREEMAN, KC
    [J]. ASTRONOMICAL JOURNAL, 1990, 99 (01) : 178 - &
  • [4] Detection of H I associated with the Sculptor dwarf spheroidal galaxy
    Carignan, C
    Beaulieu, S
    Cote, S
    Demers, S
    Mateo, M
    [J]. ASTRONOMICAL JOURNAL, 1998, 116 (04) : 1690 - 1700
  • [5] THE AGE(S)-QUESTIONABLE OF THE SCULPTOR DWARF GALAXY
    DACOSTA, GS
    [J]. ASTROPHYSICAL JOURNAL, 1984, 285 (02) : 483 - &
  • [6] ARE THERE REALLY INTER-GALACTIC HYDROGEN CLOUDS IN THE SCULPTOR GROUP
    HAYNES, MP
    ROBERTS, MS
    [J]. ASTROPHYSICAL JOURNAL, 1979, 227 (03) : 767 - 775
  • [7] UPPER LIMITS TO H I CONTENT OF DWARF SPHEROIDAL GALAXIES
    KNAPP, GR
    KERR, FJ
    BOWERS, PF
    [J]. ASTRONOMICAL JOURNAL, 1978, 83 (04) : 360 - 362
  • [8] H-I-OBSERVATIONS OF THE NEW SAGITTARIUS DWARF
    KORIBALSKI, B
    JOHNSTON, S
    OTRUPCEK, R
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1994, 270 (03) : L43 - L45
  • [9] LEO-I - THE YOUNGEST MILKY-WAY DWARF SPHEROIDAL GALAXY
    LEE, MG
    FREEDMAN, W
    MATEO, M
    THOMPSON, I
    ROTH, M
    RUIZ, MT
    [J]. ASTRONOMICAL JOURNAL, 1993, 106 (04) : 1420 - 1435
  • [10] MAGELLANIC STREAM
    MATHEWSON, DS
    CLEARY, MN
    MURRAY, JD
    [J]. ASTROPHYSICAL JOURNAL, 1974, 190 (02) : 291 - +
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