Enhanced Star Formation in Both Disks and Ram-pressure-stripped Tails of GASP Jellyfish Galaxies

被引：114

作者：

Vulcani, Benedetta ^{[1
]}

Poggianti, Bianca M. ^{[1
]}

Gullieuszik, Marco ^{[1
]}

Moretti, Alessia ^{[1
]}

Tonnesen, Stephanie ^{[2
]}

Jaffe, Yara L. ^{[3
]}

Fritz, Jacopo ^{[4
]}

Fasano, Giovanni ^{[1
]}

Bettoni, Daniela ^{[1
]}

机构：

[1] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, IT-35122 Padua, Italy

[2] Flatiron Inst, Ctr Computat Astrophys, 162 5th Ave, New York, NY 10010 USA

[3] Univ Valparaiso, Inst Fis & Astron, Avda Gran Bretana 1111, Valparaiso, Chile

[4] UNAM, Inst Radioastron & Astrofis, Campus Morelia,AP 3-72, Morelia 58089, Michoacan, Mexico

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2018年 / 866卷 / 02期

关键词：

galaxies: clusters: general; galaxies: clusters: intracluster medium; galaxies: evolution; galaxies: general; galaxies: star formation; SPIRAL GALAXIES; MUSE SNEAKS; CLUSTERS; EVENTS; PEEK; MASS; I;

D O I：

10.3847/2041-8213/aae68b

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Exploiting the data from the GAs Stripping Phenomena in galaxies with MUSE (GASP) program, we compare the integrated star formation rate-mass relation (SFR-M-*) relation of 42 cluster galaxies undergoing ram-pressure stripping (RPS; "stripping galaxies") to that of 32 field and cluster undisturbed galaxies. Theoretical predictions have so far led to contradictory conclusions about whether or not ram pressure can enhance the star formation (SF) in the gas disks and tails, and until now a statistically significant observed sample of stripping galaxies was lacking. We find that stripping galaxies occupy the upper envelope of the control sample SFR-M-* relation, showing a systematic enhancement of the SFR at any given mass. The star formation enhancement occurs in the disk (0.2 dex), and additional SF takes place in the tails. Our results suggest that strong RPS events can moderately enhance the SF also in the disk prior to gas removal.

引用

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页数：6

共 43 条

[41] GASP. XXII. The Molecular Gas Content of the JW100 Jellyfish Galaxy at z ∼ 0.05: Does Ram Pressure Promote Molecular Gas Formation?
Moretti, Alessia
Paladino, Rosita
Poggianti, Bianca M.
Serra, Paolo
Roediger, Elke
Gullieuszik, Marco
Tomicic, Neven
Radovich, Mario
Vulcani, Benedetta
Jaffe, Yara L.
Fritz, Jacopo
Bettoni, Daniela
Ramatsoku, Mpati
Wolter, Anna
ASTROPHYSICAL JOURNAL, 2020, 889 (01):
[42] ABUNDANT MOLECULAR GAS AND INEFFICIENT STAR FORMATION IN INTRACLUSTER REGIONS: RAM PRESSURE STRIPPED TAIL OF THE NORMA GALAXY ESO137-001
Jachym, Pavel
Combes, Francoise
Cortese, Luca
Sun, Ming
Kenney, Jeffrey D. P.
ASTROPHYSICAL JOURNAL, 2014, 792 (01):
[43] Spectacular Hubble Space Telescope Observations of the Coma Galaxy D100 and Star Formation in Its Ram Pressure-stripped Tail
Cramer, W. J.
Kenney, J. D. P.
Sun, M.
Crowl, H.
Yagi, M.
Jachym, P.
Roediger, E.
Waldron, W.
ASTROPHYSICAL JOURNAL, 2019, 870 (02):

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