ALMA/ACA CO survey of the IC 1459 and NGC 4636 groups : environmental effects on the molecular gas of group galaxies

Bumhyun Lee; Jing Wang; Aeree Chung; Luis C. Ho; Ran Wang; Tomonari Michiyama; Juan Molina; Yongjung Kim; Li Shao; Virginia Kilborn; Shun Wang; Xuchen Lin; Dawoon E. Kim; Barbara Catinella; Luca Cortese; Nathan Deg; Helga Denes; Ahmed Elagali; Bi-Qing For; Dane Kleiner; Bärbel S. Koribalski; Karen Lee-Waddell; Jonghwan Rhee; Kristine Spekkens; Tobias Westmeier; O. Ivy Wong; Frank Bigiel; Albert Bosma; Benne W. Holwerda; Jan M. van der Hulst; Sambit Roychowdhury; Lourdes Verdes-Montenegro; Martin A. Zwaan

doi:10.3847/1538-4365/ac7eba

ALMA/ACA CO survey of the IC 1459 and NGC 4636 groups : environmental effects on the molecular gas of group galaxies

Bumhyun Lee
, Jing Wang
, Aeree Chung
, Luis C. Ho
, Ran Wang
, Tomonari Michiyama
, Juan Molina
, Yongjung Kim
, Li Shao
, Virginia Kilborn
, Shun Wang
, Xuchen Lin
, Dawoon E. Kim
, Barbara Catinella
, Luca Cortese
, Nathan Deg
, Helga Denes
, Ahmed Elagali
, Bi-Qing For
, Dane Kleiner

Bärbel S. Koribalski, Karen Lee-Waddell, Jonghwan Rhee, Kristine Spekkens, Tobias Westmeier, O. Ivy Wong, Frank Bigiel, Albert Bosma, Benne W. Holwerda, Jan M. van der Hulst, Sambit Roychowdhury, Lourdes Verdes-Montenegro, Martin A. Zwaan

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

We present new results of a ¹²CO(J = 1-0) imaging survey using the Atacama Compact Array (ACA) for 31 H i detected galaxies in the IC 1459 and NGC 4636 groups. This is the first CO imaging survey for loose galaxy groups. We obtained well-resolved CO data (∼0.7-1.5 kpc) for a total of 16 galaxies in two environments. By comparing our ACA CO data with the H i and UV data, we probe the impacts of the group environment on the cold gas components (CO and H i gas) and star formation activity. We find that CO and/or H i morphologies are disturbed in our group members, some of which show highly asymmetric CO distributions (e.g., IC 5264, NGC 7421, and NGC 7418). In comparison with isolated galaxies in the xCOLD GASS sample, our group galaxies tend to have low star formation rates and low H₂ gas fractions. Our findings suggest that the group environment can change the distribution of cold gas components, including the molecular gas and star formation properties of galaxies. This is supporting evidence that preprocessing in the group-like environment can play an important role in galaxy evolution.

Original language	English
Article number	31
Number of pages	35
Journal	Astrophysical Journal Supplement Series
Volume	262
Issue number	1
DOIs	https://doi.org/10.3847/1538-4365/ac7eba
Publication status	Published - 1 Sept 2022

Bibliographical note

Publisher Copyright:
© 2022. The Author(s). Published by the American Astronomical Society.

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Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence (https://creativecommons.org/licenses/by/4.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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Lee, B., Wang, J., Chung, A., Ho, L. C., Wang, R., Michiyama, T., Molina, J., Kim, Y., Shao, L., Kilborn, V., Wang, S., Lin, X., Kim, D. E., Catinella, B., Cortese, L., Deg, N., Denes, H., Elagali, A., For, B.-Q., ... Zwaan, M. A. (2022). ALMA/ACA CO survey of the IC 1459 and NGC 4636 groups : environmental effects on the molecular gas of group galaxies. Astrophysical Journal Supplement Series, 262(1), Article 31. https://doi.org/10.3847/1538-4365/ac7eba

@article{6d62e565601c4dfdb540bad439696445,

title = "ALMA/ACA CO survey of the IC 1459 and NGC 4636 groups : environmental effects on the molecular gas of group galaxies",

abstract = "We present new results of a 12CO(J = 1-0) imaging survey using the Atacama Compact Array (ACA) for 31 H i detected galaxies in the IC 1459 and NGC 4636 groups. This is the first CO imaging survey for loose galaxy groups. We obtained well-resolved CO data (∼0.7-1.5 kpc) for a total of 16 galaxies in two environments. By comparing our ACA CO data with the H i and UV data, we probe the impacts of the group environment on the cold gas components (CO and H i gas) and star formation activity. We find that CO and/or H i morphologies are disturbed in our group members, some of which show highly asymmetric CO distributions (e.g., IC 5264, NGC 7421, and NGC 7418). In comparison with isolated galaxies in the xCOLD GASS sample, our group galaxies tend to have low star formation rates and low H2 gas fractions. Our findings suggest that the group environment can change the distribution of cold gas components, including the molecular gas and star formation properties of galaxies. This is supporting evidence that preprocessing in the group-like environment can play an important role in galaxy evolution.",

author = "Bumhyun Lee and Jing Wang and Aeree Chung and Ho, \{Luis C.\} and Ran Wang and Tomonari Michiyama and Juan Molina and Yongjung Kim and Li Shao and Virginia Kilborn and Shun Wang and Xuchen Lin and Kim, \{Dawoon E.\} and Barbara Catinella and Luca Cortese and Nathan Deg and Helga Denes and Ahmed Elagali and Bi-Qing For and Dane Kleiner and Koribalski, \{B{\"a}rbel S.\} and Karen Lee-Waddell and Jonghwan Rhee and Kristine Spekkens and Tobias Westmeier and Wong, \{O. Ivy\} and Frank Bigiel and Albert Bosma and Holwerda, \{Benne W.\} and \{van der Hulst\}, \{Jan M.\} and Sambit Roychowdhury and Lourdes Verdes-Montenegro and Zwaan, \{Martin A.\}",

note = "Publisher Copyright: {\textcopyright} 2022. The Author(s). Published by the American Astronomical Society.",

year = "2022",

month = sep,

day = "1",

doi = "10.3847/1538-4365/ac7eba",

language = "English",

volume = "262",

journal = "Astrophysical Journal Supplement Series",

issn = "0067-0049",

publisher = "Institute of Physics Publishing",

number = "1",

}

Lee, B, Wang, J, Chung, A, Ho, LC, Wang, R, Michiyama, T, Molina, J, Kim, Y, Shao, L, Kilborn, V, Wang, S, Lin, X, Kim, DE, Catinella, B, Cortese, L, Deg, N, Denes, H, Elagali, A, For, B-Q, Kleiner, D, Koribalski, BS, Lee-Waddell, K, Rhee, J, Spekkens, K, Westmeier, T, Wong, OI, Bigiel, F, Bosma, A, Holwerda, BW, van der Hulst, JM, Roychowdhury, S, Verdes-Montenegro, L & Zwaan, MA 2022, 'ALMA/ACA CO survey of the IC 1459 and NGC 4636 groups : environmental effects on the molecular gas of group galaxies', Astrophysical Journal Supplement Series, vol. 262, no. 1, 31. https://doi.org/10.3847/1538-4365/ac7eba

TY - JOUR

T1 - ALMA/ACA CO survey of the IC 1459 and NGC 4636 groups : environmental effects on the molecular gas of group galaxies

AU - Lee, Bumhyun

AU - Wang, Jing

AU - Chung, Aeree

AU - Ho, Luis C.

AU - Wang, Ran

AU - Michiyama, Tomonari

AU - Molina, Juan

AU - Kim, Yongjung

AU - Shao, Li

AU - Kilborn, Virginia

AU - Wang, Shun

AU - Lin, Xuchen

AU - Kim, Dawoon E.

AU - Catinella, Barbara

AU - Cortese, Luca

AU - Deg, Nathan

AU - Denes, Helga

AU - Elagali, Ahmed

AU - For, Bi-Qing

AU - Kleiner, Dane

AU - Koribalski, Bärbel S.

AU - Lee-Waddell, Karen

AU - Rhee, Jonghwan

AU - Spekkens, Kristine

AU - Westmeier, Tobias

AU - Wong, O. Ivy

AU - Bigiel, Frank

AU - Bosma, Albert

AU - Holwerda, Benne W.

AU - van der Hulst, Jan M.

AU - Roychowdhury, Sambit

AU - Verdes-Montenegro, Lourdes

AU - Zwaan, Martin A.

PY - 2022/9/1

Y1 - 2022/9/1

N2 - We present new results of a 12CO(J = 1-0) imaging survey using the Atacama Compact Array (ACA) for 31 H i detected galaxies in the IC 1459 and NGC 4636 groups. This is the first CO imaging survey for loose galaxy groups. We obtained well-resolved CO data (∼0.7-1.5 kpc) for a total of 16 galaxies in two environments. By comparing our ACA CO data with the H i and UV data, we probe the impacts of the group environment on the cold gas components (CO and H i gas) and star formation activity. We find that CO and/or H i morphologies are disturbed in our group members, some of which show highly asymmetric CO distributions (e.g., IC 5264, NGC 7421, and NGC 7418). In comparison with isolated galaxies in the xCOLD GASS sample, our group galaxies tend to have low star formation rates and low H2 gas fractions. Our findings suggest that the group environment can change the distribution of cold gas components, including the molecular gas and star formation properties of galaxies. This is supporting evidence that preprocessing in the group-like environment can play an important role in galaxy evolution.

AB - We present new results of a 12CO(J = 1-0) imaging survey using the Atacama Compact Array (ACA) for 31 H i detected galaxies in the IC 1459 and NGC 4636 groups. This is the first CO imaging survey for loose galaxy groups. We obtained well-resolved CO data (∼0.7-1.5 kpc) for a total of 16 galaxies in two environments. By comparing our ACA CO data with the H i and UV data, we probe the impacts of the group environment on the cold gas components (CO and H i gas) and star formation activity. We find that CO and/or H i morphologies are disturbed in our group members, some of which show highly asymmetric CO distributions (e.g., IC 5264, NGC 7421, and NGC 7418). In comparison with isolated galaxies in the xCOLD GASS sample, our group galaxies tend to have low star formation rates and low H2 gas fractions. Our findings suggest that the group environment can change the distribution of cold gas components, including the molecular gas and star formation properties of galaxies. This is supporting evidence that preprocessing in the group-like environment can play an important role in galaxy evolution.

UR - https://hdl.handle.net/1959.7/uws:70428

U2 - 10.3847/1538-4365/ac7eba

DO - 10.3847/1538-4365/ac7eba

M3 - Article

SN - 0067-0049

VL - 262

JO - Astrophysical Journal Supplement Series

JF - Astrophysical Journal Supplement Series

IS - 1

M1 - 31

ER -

ALMA/ACA CO survey of the IC 1459 and NGC 4636 groups : environmental effects on the molecular gas of group galaxies

Abstract

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