Investigating the Effect of Galaxy Interactions on Star Formation at 0.5 < z < 3.0

被引：18

作者：

Shah, Ekta A. ^{[1
,2
]}

Kartaltepe, Jeyhan S. ^{[1
]}

Magagnoli, Christina T. ^{[1
]}

Cox, Isabella G. ^{[1
]}

Wetherell, Caleb T. ^{[1
]}

Vanderhoof, Brittany N. ^{[1
]}

Cooke, Kevin C. ^{[1
,3
,4
]}

Calabro, Antonello ^{[5
]}

Chartab, Nima ^{[6
]}

Conselice, Christopher J. ^{[7
]}

Croton, Darren J. ^{[8
,9
]}

de la Vega, Alexander ^{[10
]}

Hathi, Nimish P. ^{[11
]}

Ilbert, Olivier ^{[12
]}

Inami, Hanae ^{[13
]}

Kocevski, Dale D. ^{[14
]}

Koekemoer, Anton M. ^{[11
]}

Lemaux, Brian C. ^{[2
,15
]}

Lubin, Lori ^{[2
]}

Mantha, Kameswara Bharadwaj ^{[16
]}

Marchesi, Stefano ^{[17
,18
]}

Martig, Marie ^{[19
]}

Moreno, Jorge ^{[20
]}

Pampliega, Belen Alcalde ^{[21
]}

Patton, David R. ^{[22
]}

Salvato, Mara ^{[23
]}

Treister, Ezequiel ^{[24
]}

机构：

[1] Rochester Inst Technol, Sch Phys & Astron, Lab Multiwavelength Astrophys, 84 Lomb Mem Dr, Rochester, NY 14623 USA

[2] Univ Calif Davis, Dept Phys & Astron, One Shields Ave, Davis, CA 95616 USA

[3] Natl Sci Fdn, 1200 New York Ave, NW, Washington, DC 20005 USA

[4] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

[5] INAF OAR, Via Frascati 33, I-00078 Monte Porzio Catone, Italy

[6] Observ Carnegie Inst Sci, 813 St Barbara St, Pasadena, CA 91101 USA

[7] Univ Nottingham, Ctr Particle Theory & Astron, Nottingham NG7 2RD, England

[8] Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218, Hawthorn, Vic 3122, Australia

[9] ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Hawthorn, Australia

[10] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[11] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

[12] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France

[13] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 7398526, Japan

[14] Colby Coll, Dept Phys & Astron, Waterville, ME 04961 USA

[15] Gemini Observ, 670 N Aohoku Pl, Hilo, HI 96720 USA

[16] Univ Missouri Kansas City, Dept Phys & Astron, Kansas City, MO 64110 USA

[17] INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti, 93-3, I-40129 Bologna, Italy

[18] Clemson Univ, Dept Phys & Astron, Kinard Lab Phys, Clemson, SC 29634 USA

[19] Liverpool John Moores Univ, Astrophys Res Inst, 146 Brownlow Hill, Liverpool L3 5RF, England

[20] Pomona Coll, Dept Phys & Astron, 333 N Coll Way, Claremont, CA 91711 USA

[21] Fac CC Fis, Dept Fis Tierra & Astrofis, Madrid 2840, Spain

[22] Trent Univ, Dept Phys & Astron, 1600 West Bank Dr, Peterborough, ON K9L 0G2, Canada

[23] Max Planck Inst Extraterr Phys MPE, Giessenbachstr 1, D-85748 Garching, Germany

[24] Pontificia Univ Catolica Chile, Fac Fis, Inst Astrofis, Casilla 306, Santiago 22, Chile

来源：

ASTROPHYSICAL JOURNAL | 2022年 / 940卷 / 01期

基金：

加拿大自然科学与工程研究理事会; 美国国家航空航天局;

关键词：

DIGITAL SKY SURVEY; SURVEY. SURVEY DESIGN; ORIGINS DEEP SURVEY; REDSHIFT SURVEY; GOODS-SOUTH; SPECTROSCOPIC SURVEY; FORMING GALAXIES; FORMATION RATES; MAJOR MERGERS; PHOTOMETRIC REDSHIFTS;

D O I：

10.3847/1538-4357/ac96eb

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Observations and simulations of interacting galaxies and mergers in the local universe have shown that interactions can significantly enhance the star formation rates (SFRs) and fueling of active galactic nuclei (AGN). However, at higher redshift, some simulations suggest that the level of star formation enhancement induced by interactions is lower due to the higher gas fractions and already increased SFRs in these galaxies. To test this, we measure the SFR enhancement in a total of 2351 (1327) massive (M* > 10(10)M(?)) major (1 < M-1/M-2 < 4) spectroscopic galaxy pairs at 0.5 < z < 3.0 with delta V < 5000 km s-1 (1000 km s(-1)) and projected separation < 150 kpc selected from the extensive spectroscopic coverage in the COSMOS and CANDELS fields. We find that the highest level of SFR enhancement is a factor of 1.23 (-0.09) (+0.08) in the closest projected separation bin (< 25 kpc) relative to a stellar mass-, redshift-, and environment-matched control sample of isolated galaxies. We find that the level of SFR enhancement is a factor of similar to 1.5 higher at 0.5 < z < 1 than at 1 < z < 3 in the closest projected separation bin. Among a sample of visually identified mergers, we find an enhancement of a factor of 1.86 (-0.18) (+0.29) (similar to 3 sigma) for coalesced systems. For this visually identified sample, we see a clear trend of increased SFR enhancement with decreasing projected separation (2.40-+0.62versus + 0.37 1.58(-0.20) (+0.29) for 0.5 < z < 1.6 and 1.6 < z < 3.0, respectively). The SFR enhancements seen in our interactions and mergers are all lower than the level seen in local samples at the same separation, suggesting that the level of interaction-induced star formation evolves significantly over this time period.

引用

页数：17

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Investigating the Effect of Galaxy Interactions on Star Formation at 0.5 &lt; z &lt; 3.0

Investigating the Effect of Galaxy Interactions on Star Formation at 0.5 < z < 3.0