The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history

被引：70

作者：

Ho, I-Ting ^{[1
,2
]}

Medling, Anne M. ^{[2
]}

Bland-Hawthorn, Joss ^{[3
]}

Groves, Brent ^{[2
]}

Kewley, Lisa J. ^{[1
,2
]}

Kobayashi, Chiaki ^{[4
]}

Dopita, Michael A. ^{[2
,5
]}

Leslie, Sarah K. ^{[2
]}

Sharp, Rob ^{[2
,6
]}

Allen, James T. ^{[3
,6
]}

Bourne, Nathan ^{[7
]}

Bryant, Julia J. ^{[3
,6
,8
]}

Cortese, Luca ^{[9
,10
]}

Croom, Scott M. ^{[3
,6
]}

Dunne, Loretta ^{[7
]}

Fogarty, L. M. R. ^{[3
,6
]}

Goodwin, Michael ^{[8
]}

Green, Andy W. ^{[8
]}

Konstantopoulos, Iraklis S. ^{[8
,11
]}

Lawrence, Jon S. ^{[8
]}

Lorente, Nuria P. F. ^{[8
]}

Owers, Matt S. ^{[8
,12
]}

Richards, Samuel ^{[3
,6
,8
]}

Sweet, Sarah M. ^{[2
]}

Tescari, Edoardo ^{[6
,13
]}

Valiante, Elisabetta ^{[14
]}

机构：

[1] Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA

[2] Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia

[3] Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia

[4] Univ Hertfordshire, Ctr Astrophys Res, Sci & Technol Res Inst, Hatfield AL10 9AB, Herts, England

[5] King Abdulaziz Univ, Astron Dept, POB 80203, Jeddah 21589, Saudi Arabia

[6] ARC Ctr Excellence All Sky Astrophys CAASTRO, Sydney, NSW, Australia

[7] Univ Edinburgh, Royal Observ, Inst Astron, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland

[8] Australian Astron Observ, POB 915, N Ryde, NSW 1670, Australia

[9] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia

[10] Univ Western Australia, Int Ctr Radio Astron Res, 35 Stirling Highway, Crawley, WA 6009, Australia

[11] Natl Innovat Ctr, Envizi Grp Suite 213, Australian Technol Pk,4 Cornwallis St, Eveleigh, NSW 2015, Australia

[12] Macquarie Univ, Dept Phys & Astron, N Ryde, NSW 2109, Australia

[13] Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia

[14] Cardiff Univ, Sch Phys & Astron, Queens Bldg, Cardiff CF24 3AA, S Glam, Wales

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 457卷 / 02期

基金：

欧洲研究理事会; 美国国家科学基金会; 澳大利亚研究理事会; 美国国家航空航天局;

关键词：

galaxies: evolution; galaxies: ISM; galaxies: kinematics and dynamics; galaxies: starburst; DIFFUSE IONIZED-GAS; ON SPIRAL GALAXIES; STELLAR POPULATION SYNTHESIS; FIELD UNIT OBSERVATIONS; CENTRAL BLACK-HOLES; EMISSION-LINE GAS; H-ALPHA-EMISSION; COS-HALOS SURVEY; SIMILAR-TO; INTERSTELLAR-MEDIUM;

D O I：

10.1093/mnras/stw017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate a sample of 40 local, main-sequence, edge-on disc galaxies using integral field spectroscopy with the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey to understand the link between properties of the extraplanar gas and their host galaxies. The kinematics properties of the extraplanar gas, including velocity asymmetries and increased dispersion, are used to differentiate galaxies hosting large-scale galactic winds from those dominated by the extended diffuse ionized gas. We find rather that a spectrum of diffuse gas-dominated to wind-dominated galaxies exist. The wind-dominated galaxies span a wide range of star formation rates (SFRs; -1 a parts per thousand(2) log (SFR/M-aS (TM) yr(-1)) a parts per thousand(2) 0.5) across the whole stellar mass range of the sample (8.5 a parts per thousand(2) log (M-*/M-aS (TM)) a parts per thousand(2) 11). The wind galaxies also span a wide range in SFR surface densities (10(- 3)-10(- 1.5) M-aS (TM) yr(- 1) kpc(- 2)) that is much lower than the canonical threshold of 0.1 M-aS (TM) yr(- 1) kpc(- 2). The wind galaxies on average have higher SFR surface densities and higher H delta(A) values than those without strong wind signatures. The enhanced H delta(A) indicates that bursts of star formation in the recent past are necessary for driving large-scale galactic winds. We demonstrate with Sloan Digital Sky Survey data that galaxies with high SFR surface density have experienced bursts of star formation in the recent past. Our results imply that the galactic winds revealed in our study are indeed driven by bursts of star formation, and thus probing star formation in the time domain is crucial for finding and understanding galactic winds.

引用

页码：1257 / 1278

页数：22

共 50 条

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