THE NATURE OF STARBURSTS. II. THE DURATION OF STARBURSTS IN DWARF GALAXIES

被引:141
作者
McQuinn, Kristen B. W. [1 ]
Skillman, Evan D. [1 ]
Cannon, John M. [2 ]
Dalcanton, Julianne [3 ]
Dolphin, Andrew [4 ]
Hidalgo-Rodriguez, Sebastian [5 ]
Holtzman, Jon [6 ]
Stark, David [1 ]
Weisz, Daniel [1 ]
Williams, Benjamin [3 ]
机构
[1] Univ Minnesota, Sch Phys & Astron, Dept Astron, Minneapolis, MN 55455 USA
[2] Macalester Coll, Dept Phys & Astron, St Paul, MN 55105 USA
[3] Univ Washington, Dept Astron, Seattle, WA 98195 USA
[4] Raytheon Co, Tucson, AZ 85706 USA
[5] Inst Astrofis Canarias, E-38200 Canary Islands, Tenerife, Spain
[6] New Mexico State Univ, Dept Astron, Las Cruces, NM 88003 USA
基金
美国国家科学基金会;
关键词
galaxies: dwarf; galaxies: evolution; galaxies: individual (Antlia dwarf; ESO; 154-023; UGC; 4483; 6456; 9128; NGC; 625; 784; 1569; 2366; 4068; 4163; 4214; 4449; 5253; 6789; 6822; IC; 4662; SBS; 1415+437; DDO; 165; Holmberg II); galaxies: starburst; STAR-FORMATION HISTORIES; EVOLUTION; CLUSTER; MODELS; ORIGIN; POPULATIONS; SPHEROIDALS; ABUNDANCES; FIELD; DUST;
D O I
10.1088/0004-637X/724/1/49
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The starburst phenomenon can shape the evolution of the host galaxy and the surrounding intergalactic medium. The extent of the evolutionary impact is partly determined by the duration of the starburst, which has a direct correlation with both the amount of stellar feedback and the development of galactic winds, particularly for smaller mass dwarf systems. We measure the duration of starbursts in twenty nearby, ongoing, and "fossil" starbursts in dwarf galaxies based on the recent star formation histories derived from resolved stellar population data obtained with the Hubble Space Telescope. Contrary to the shorter times of 3-10 Myr often cited, the starburst durations we measure range from 450 to 650 Myr in fifteen of the dwarf galaxies and up to 1.3 Gyr in four galaxies; these longer durations are comparable to or longer than the dynamical timescales for each system. The same feedback from massive stars that may quench the flickering star formation does not disrupt the overall burst event in our sample of galaxies. While five galaxies present fossil bursts, fifteen galaxies show ongoing bursts and thus the final durations may be longer than we report here for these systems. One galaxy shows a burst that has been ongoing for only 20 Myr; we are likely seeing the beginning of a burst event in this system. Using the duration of the starbursts, we calculate that the bursts deposited 10(53.9)-10(57.2) erg of energy into the interstellar medium through stellar winds and supernovae, and produced 3%-26% of the host galaxy's mass.
引用
收藏
页码:49 / 58
页数:10
相关论文
共 58 条
[1]   Dust and recent star formation in the core of NGC 5253 [J].
Calzetti, D ;
Meurer, GR ;
Bohlin, RC ;
Garnett, DR ;
Kinney, AL ;
Leitherer, C ;
StorchiBergmann, T .
ASTRONOMICAL JOURNAL, 1997, 114 (05) :1834-+
[2]   The recent evolution of the dwarf starburst galaxy NGC 625 from Hubble Space Telescope imaging [J].
Cannon, JM ;
Dohm-Palmer, RC ;
Skillman, ED ;
Bomans, DJ ;
Côté, S ;
Miller, BW .
ASTRONOMICAL JOURNAL, 2003, 126 (06) :2806-2830
[3]   Leo A: A late-blooming survivor of the epoch of reionization in the local group [J].
Cole, Andrew A. ;
Skillman, Evan D. ;
Tolstoy, Eline ;
Gallagher, John S., III ;
Aparicio, Antonio ;
Dolphin, Andrew E. ;
Gallart, Carme ;
Hidalgo, Sebastian L. ;
Saha, Abhijit ;
Stetson, Peter B. ;
Weisz, Daniel R. .
ASTROPHYSICAL JOURNAL, 2007, 659 (01) :L17-L20
[4]  
DALCANTON J, 2007, J APJ, V658, P941
[5]   THE EVOLUTION OF DWARF GALAXIES [J].
DAVIES, JI ;
PHILLIPPS, S .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1988, 233 (03) :553-559
[6]   THE ORIGIN OF DWARF GALAXIES, COLD DARK MATTER, AND BIASED GALAXY FORMATION [J].
DEKEL, A ;
SILK, J .
ASTROPHYSICAL JOURNAL, 1986, 303 (01) :39-55
[7]   Deep Hubble Space Telescope imaging of Sextans A.: I.: The spatially resolved recent star formation history [J].
Dohm-Palmer, RC ;
Skillman, ED ;
Mateo, M ;
Saha, A ;
Dolphin, A ;
Tolstoy, E ;
Gallagher, JS ;
Cole, AA .
ASTRONOMICAL JOURNAL, 2002, 123 (02) :813-831
[8]  
DOLPHIN AE, 2002, E MNRAS, V332, P91
[9]  
DOLPHIN AE, 2000, E PASP, V112, P1383
[10]   The Hubble Deep Field and the disappearing dwarf galaxies [J].
Ferguson, HC ;
Babul, A .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1998, 296 (03) :585-598