SDSS-IV MaNGA: evidence of the importance of AGN feedback in low-mass galaxies

被引:95
作者
Penny, Samantha J. [1 ]
Masters, Karen L. [1 ]
Smethurst, Rebecca [2 ]
Nichol, Robert C. [1 ]
Krawczyk, Coleman M. [1 ]
Bizyaev, Dmitry [3 ,4 ,5 ]
Greene, Olivia [6 ,7 ]
Liu, Charles [8 ,9 ,10 ]
Marinelli, Mariarosa [11 ]
Rembold, Sandro B. [12 ,13 ]
Riffel, Rogemar A. [12 ,13 ]
Ilha, Gabriele da Silva [12 ,13 ]
Wylezalek, Dominika [14 ,15 ]
Andrews, Brett H. [16 ]
Bundy, Kevin [17 ]
Drory, Niv [18 ]
Oravetz, Daniel [3 ,4 ]
Pan, Kaike [3 ,4 ]
机构
[1] Univ Portsmouth, Inst Cosmol & Gravitat, Burnaby Rd, Portsmouth PO1 3FX, Hants, England
[2] Univ Nottingham, Sch Phys & Astron, Univ Pk, Nottingham NG7 2RD, England
[3] Apache Point Observ, POB 59, Sunspot, NM 88349 USA
[4] New Mexico State Univ, POB 59, Sunspot, NM 88349 USA
[5] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow, Russia
[6] Vanderbilt Univ, Dept Phys & Astron, 201 West End Ave, Nashville, TN 37235 USA
[7] Fisk Univ, Dept Phys, 1000 17th Ave N, Nashville, TN 37208 USA
[8] CUNY Coll Staten Isl, Astrophys Observ, Dept Engn Sci & Phys, 2800 Victory Blvd, Staten Isl, NY 10314 USA
[9] Amer Museum Nat Hist, Dept Astrophys & Hayden Planetarium, New York, NY 10024 USA
[10] CUNY, Grad Ctr, Phys Program, New York, NY 10016 USA
[11] Reynolds Community Coll, Sch Math Sci & Engn, Richmond, VA 23285 USA
[12] Univ Fed Santa Maria, CCNE, Dept Fis, BR-97105900 Santa Maria, RS, Brazil
[13] Lab Interinst & Astron, 77 Rua Gen Jose Cristino, BR-20921400 Rio De Janeiro, Brazil
[14] Johns Hopkins Univ, Ctr Astrophys Sci, Dept Phys & Astron, 3400 North Charles St, Baltimore, MD 21218 USA
[15] European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
[16] Univ Pittsburgh, Dept Phys & Astron, PITT PACC, Pittsburgh, PA 15260 USA
[17] Univ Calif Santa Cruz, 1156 High St, Santa Cruz, CA 95064 USA
[18] Univ Texas Austin, McDonald Observ, 1 Univ Stn, Austin, TX 78712 USA
基金
美国安德鲁·梅隆基金会; 美国国家科学基金会;
关键词
galaxies: active; galaxies: dwarf; galaxies: evolution; galaxies: kinematics and dynamics; DIGITAL SKY SURVEY; SUPERMASSIVE BLACK-HOLE; ACTIVE GALACTIC NUCLEI; COMPACT DWARF GALAXY; HOST GALAXIES; STAR-FORMATION; LINE SPECTRA; CLASSIFICATION; EVOLUTION; CLUSTER;
D O I
10.1093/mnras/sty202
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present new evidence for AGN feedback in a subset of 69 quenched low-mass galaxies (M-star less than or similar to 5 x 10(9) M-circle dot, M-r > -19) selected from the first 2 yr of the Sloan Digital Sky Survey-IV Mapping Nearby Galaxies at APO (SDSS-IV MaNGA) survey. The majority (85 per cent) of these quenched galaxies appear to reside in a group environment. We find six galaxies in our sample that appear to have an active AGN that is preventing on-going star formation; this is the first time such a feedback mechanism has been observed in this mass range. Interestingly, five of these six galaxies have an ionized gas component that is kinematically offset from their stellar component, suggesting the gas is either recently accreted or outflowing. We hypothesize these six galaxies are low-mass equivalents to the 'red geysers' observed in more massive galaxies. Of the other 63 galaxies in the sample, we find 8 do appear for have some low level, residual star formation, or emission from hot, evolved stars. The remaining galaxies in our sample have no detectable ionized gas emission throughout their structures, consistent with them being quenched. This work shows the potential for understanding the detailed physical properties of dwarf galaxies through spatially resolved spectroscopy.
引用
收藏
页码:979 / 998
页数:20
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