The ALMaQUEST survey - III. Scatter in the resolved star-forming main sequence is primarily due to variations in star formation efficiency

被引：60

作者：

Ellison, Sara L. ^{[1
]}

Thorp, Mallory D. ^{[1
]}

Lin, Lihwai ^{[2
]}

Pan, Hsi-An ^{[2
]}

Bluck, Asa F. L. ^{[3
]}

Scudder, Jillian M. ^{[4
]}

Teimoorinia, Hossen ^{[1
,5
]}

Sanchez, Sebastian F. ^{[6
]}

Sargent, Mark ^{[7
]}

机构：

[1] Univ Victoria, Dept Phys & Astron, Finnerty Rd, Victoria, BC V8P 1A1, Canada

[2] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan

[3] Univ Cambridge, Kavli Inst Cosmol & Cavendish Astrophys, Madingley Rd, Cambridge CB3 0HA, England

[4] Oberlin Coll, Dept Phys & Astron, Oberlin, OH 44074 USA

[5] NRC Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada

[6] Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Mexico City 04510, DF, Mexico

[7] Univ Sussex, Astron Ctr, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2020年 / 493卷 / 01期

基金：

欧洲研究理事会;

关键词：

galaxies: evolution; galaxies: general; galaxies: ISM; galaxies: star formation; FORMATION RATES; NEARBY GALAXIES; MOLECULAR GAS; FORMATION LAW; MASS; II;

D O I：

10.1093/mnrasl/slz179

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a sample of 11 478 spaxels in 34 galaxies with molecular gas, star formation, and stellar maps taken from the ALMA-MaNGA QUEnching and STar formation (ALMaQUEST) survey, we investigate the parameters that correlate with variations in star formation rates on kpc scales. We use a combination of correlation statistics and an artificial neural network to quantify the parameters that drive both the absolute star formation rate surface density (Sigma(SFR)), as well as its scatter around the resolved star-forming main sequence (Delta Sigma(SFR)). We find that Est is primarily regulated by molecular gas surface density (EH2) with a secondary dependence on stellar mass surface density (Sigma(*)), as expected from an 'extended Kennicutt-Schmidt relation'. However, Delta Sigma(SFR) is driven primarily by changes in star formation efficiency (SFE), with variations in gas fraction playing a secondary role. Taken together, our results demonstrate that whilst the absolute rate of star formation is primarily set by the amount of molecular gas, the variation of star formation rate above and below the resolved star-forming main sequence (on kpc scales) is primarily due to changes in SFE.

引用

页码：L39 / L43

页数：5

共 50 条

[41] The molecular gas main sequence and Schmidt-Kennicutt relation are fundamental, the star-forming main sequence is a (useful) byproduct
Baker, William M.
Maiolino, Roberto
Belfiore, Francesco
Bluck, Asa F. L.
Curti, Mirko
Wylezalek, Dominika
Bertemes, Caroline
Bothwell, M. S.
Lin, Lihwai
Thorp, Mallory
Pan, Hsi-An
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2023, 518 (03) : 4767 - 4781
[42] The molecular gas main sequence and Schmidt-Kennicutt relation are fundamental, the star-forming main sequence is a (useful) byproduct
Baker, William M.
Maiolino, Roberto
Belfiore, Francesco
Bluck, Asa F. L.
Curti, Mirko
Wylezalek, Dominika
Bertemes, Caroline
Bothwell, M. S.
Lin, Lihwai
Thorp, Mallory
Pan, Hsi-An
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 518 (03) : 4767 - 4781
[43] A HIGHER EFFICIENCY OF CONVERTING GAS TO STARS PUSHES GALAXIES AT z ∼ 1.6 WELL ABOVE THE STAR-FORMING MAIN SEQUENCE
Silverman, J. D.
Daddi, E.
Rodighiero, G.
Rujopakarn, W.
Sargent, M.
Renzini, A.
Liu, D.
Feruglio, C.
Kashino, D.
Sanders, D.
Kartaltepe, J.
Nagao, T.
Arimoto, N.
Berta, S.
Bethermin, M.
Koekemoer, A.
Lutz, D.
Magdis, G.
Mancini, C.
Onodera, M.
Zamorani, G.
ASTROPHYSICAL JOURNAL LETTERS, 2015, 812 (02)
[44] THE FMOS-COSMOS SURVEY OF STAR-FORMING GALAXIES AT z ∼ 1.6. I. Hα-BASED STAR FORMATION RATES AND DUST EXTINCTION
Kashino, D.
Silverman, J. D.
Rodighiero, G.
Renzini, A.
Arimoto, N.
Daddi, E.
Lilly, S. J.
Sanders, D. B.
Kartaltepe, J.
Zahid, H. J.
Nagao, T.
Sugiyama, N.
Capak, P.
Carollo, C. M.
Chu, J.
Hasinger, G.
Ilbert, O.
Kajisawa, M.
Kewley, L. J.
Koekemoer, A. M.
Kovac, K.
Le Fevre, O.
Masters, D.
McCracken, H. J.
Onodera, M.
Scoville, N.
Strazzullo, V.
Symeonidis, M.
Taniguchi, Y.
ASTROPHYSICAL JOURNAL LETTERS, 2013, 777 (01)
[45] The main sequence of star-forming galaxies at z ∼ 0.6: reinstating major mergers
Puech, M.
Hammer, F.
Rodrigues, M.
Fouquet, S.
Flores, H.
Disseau, K.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 443 (01) : L49 - L53
[46] xGASS: the role of bulges along and across the local star-forming main sequence
Cook, Robin H. W.
Cortese, Luca
Catinella, Barbara
Robotham, Aaron S. G.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 493 (04) : 5596 - 5605
[47] The SAMI Galaxy Survey: spatially resolving the main sequence of star formation
Medling, Anne M.
Cortese, Luca
Croom, Scott M.
Green, Andrew W.
Groves, Brent
Hampton, Elise
Ho, I-Ting
Davies, Luke J. M.
Kewley, Lisa J.
Moffett, Amanda J.
Schaefer, Adam L.
Taylor, Edward
Zafar, Tayyaba
Bekki, Kenji
Bland-Hawthorn, Joss
Bloom, Jessica V.
Brough, Sarah
Bryant, Julia J.
Catinella, Barbara
Cecil, Gerald
Colless, Matthew
Couch, Warrick J.
Drinkwater, Michael J.
Driver, Simon P.
Federrath, Christoph
Foster, Caroline
Goldstein, Gregory
Goodwin, Michael
Hopkins, Andrew
Lawrence, J. S.
Leslie, Sarah K.
Lewis, Geraint F.
Lorente, Nuria P. F.
Owers, Matt S.
McDermid, Richard
Richards, Samuel N.
Sharp, Robert
Scott, Nicholas
Sweet, Sarah M.
Taranu, Dan S.
Tescari, Edoardo
Tonini, Chiara
van de Sande, Jesse
Walcher, Jakob
Wright, Angus
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2018, 475 (04) : 5194 - 5214
[48] Non-linearity and environmental dependence of the star-forming galaxies main sequence
Erfanianfar, G.
Popesso, P.
Finoguenov, A.
Wilman, D.
Wuyts, S.
Biviano, A.
Salvato, M.
Mirkazemi, M.
Morselli, L.
Ziparo, F.
Nandra, K.
Lutz, D.
Elbaz, D.
Dickinson, M.
Tanaka, M.
Altieri, M. B.
Aussel, H.
Bauer, F.
Berta, S.
Bielby, R. M.
Brandt, N.
Cappelluti, N.
Cimatti, A.
Cooper, M. C.
Fadda, D.
Ilbert, O.
Le Floch, E.
Magnelli, B.
Mulchaey, J. S.
Nordon, R.
Newman, J. A.
Poglitsch, A.
Pozzi, F.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 455 (03) : 2839 - 2851
[49] Star Formation Histories of the LEGUS Dwarf Galaxies. III. The Nonbursty Nature of 23 Star-forming Dwarf Galaxies
Cignoni, M.
Sacchi, E.
Tosi, M.
Aloisi, A.
Cook, D. O.
Calzetti, D.
Lee, J. C.
Sabbi, E.
Thilker, D. A.
Adamo, A.
Dale, D. A.
Elmegreen, B. G.
Gallagher, J. S., III
Grebel, E. K.
Johnson, K. E.
Messa, M.
Smith, L. J.
Ubeda, L.
ASTROPHYSICAL JOURNAL, 2019, 887 (02)
[50] xCOLD GASS and xGASS: Radial metallicity gradients and global properties on the star-forming main sequence
Lutz, K. A.
Saintonge, A.
Catinella, B.
Cortese, L.
Eisenhauer, F.
Kramer, C.
Moran, S. M.
Tacconi, L. J.
Vollmer, B.
Wang, J.
ASTRONOMY & ASTROPHYSICS, 2021, 649

← 1 2 3 4 5 →