Estimation of the dust mass-loss rates from AGB stars in the Fornax and Sagittarius dwarf spheroidal galaxies

被引：0
|
作者：
Lagadec, Eric [1 ]
Zijlstra, Albert A. [1 ]
Matsuura, M. [2 ]
Whitelock, Patricia A. [3 ]
van Loon, Jacco Th. [4 ]
机构：
[1] Univ Manchester, Sch Phys & Astron, Sackville St Bldg,POB 88, Manchester M60 1QD, Lancs, England
[2] Natl Astron Observ Japan, Tokyo, Japan
[3] Univ Cape Town, Rondebosch, South Africa
[4] Univ Keele, Keele, Staffs, England
来源：
WHY GALAXIES CARE ABOUT AGB STARS: THEIR IMPORTANCE AS ACTORS AND PROBES | 2007年 / 378卷
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
To study the effect of metallicity on the mass-loss of AGB stars, we have conducted mid-infrared photometric measurements of AGB stars in the Sagittarius and Fornax dwarf spheroidal galaxies ([Fe/H] = -1.1 and -1.3) with the 10 mu m camera VISIR at the VLT. These observations, combined with previous near-infrared photometric measurements, allow us to estimate mass-loss rates in these galaxies. We show here that the observed AGB stars display dust-driven mass-loss. Dust mass-loss rates are found to be in the range 6 x 10(-10) - 4.4 x 10(-8) M-circle dot yr(-1) for the observed AGB stars in SgrD and around 2 x 10(-8) M-circle dot yr(-1) for the star observed in Fornax.
引用
收藏
页码：268 / +
页数：3
相关论文
共 50 条
  • [1] Dust mass-loss rates from asymptotic giant branch stars in the Fornax and Sagittarius dwarf spheroidal galaxies
    Lagadec, Eric
    Zijlstra, Albert A.
    Matsuura, Mikako
    Menzies, J. W.
    van Loon, Jacco Th.
    Whitelock, Patricia A.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 383 (01) : 399 - 410
  • [2] Dust Mass-Loss Rates of AGB Stars in the Solar Neighborhood
    Trejo, Alfonso
    Kemper, Francisca
    Srinivasan, Sundar
    Zhao-Geisler, Ronny
    WHY GALAXIES CARE ABOUT AGB STARS III: A CLOSER LOOK IN SPACE AND TIME, 2015, 497 : 405 - 406
  • [3] Space Motions of the Draco, Fornax, and Sagittarius Dwarf Spheroidal Galaxies
    Piatek, Slawomir
    Pryor, Carlton
    Olszewski, Edward
    GALAXIES IN THE LOCAL VOLUME, 2008, : 199 - +
  • [4] MASS-LOSS IN DWARF GALAXIES
    MEURER, GR
    PROCEEDINGS ASTRONOMICAL SOCIETY OF AUSTRALIA, 1991, 9 (01): : 98 - 99
  • [5] The wind speeds, dust content, and mass-loss rates of evolved AGB and RSG stars at varying metallicity
    Goldman, Steven R.
    van Loon, Jacco Th.
    Zijlstra, Albert A.
    Green, James A.
    Wood, Peter R.
    Nanni, Ambra
    Imai, Hiroshi
    Whitelock, Patricia A.
    Matsuura, Mikako
    Groenewegen, Martin A. T.
    Gomez, Jose F.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 465 (01) : 403 - 433
  • [6] Mass-loss rates and luminosity functions of dust-enshrouded AGB stars and red supergiants in the LMC
    van Loon, JT
    Groenewegen, MAT
    de Koter, A
    Trams, NR
    Waters, LBFM
    Zijlstra, AA
    Whitelock, PA
    Loup, C
    ASTRONOMY & ASTROPHYSICS, 1999, 351 (02) : 559 - 572
  • [7] Limits on the significant mass-loss scenario based on the globular clusters of the Fornax dwarf spheroidal galaxy
    Khalaj, P.
    Baumgardt, H.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 457 (01) : 479 - 486
  • [8] Spitzer Space Telescope spectral observations of AGB stars in the Fornax dwarf spheroidal galaxy
    Matsuura, M.
    Zijlstra, A. A.
    Bernard-Salas, J.
    Menzies, J. W.
    Sloan, G. C.
    Whitelock, P. A.
    Wood, P. R.
    Cioni, M. -R. L.
    Feast, M. W.
    Lagadec, E.
    van Loon, J. Th.
    Groenewegen, M. A. T.
    Harris, G. J.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 382 (04) : 1889 - 1900
  • [9] ON A MAGNETOHYDRODYNAMIC PROCESS OF MASS-LOSS IN AGB STARS
    PASCOLI, G
    ASTROPHYSICS AND SPACE SCIENCE, 1994, 219 (02) : 249 - 256
  • [10] Metallicities for globular clusters in the fornax, sagittarius, and canis major dwarf spheroidal galaxies and their total luminosities
    Sarajedini, Ata
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2024, 533 (02) : 2089 - 2095
12345