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Star formation rates for elliptical galaxies derived from the WISE 12-and 22-mu m emission

We investigated the star formation rates (SFRs) of selected elliptical galaxies using the infrared data from the Widefield Infrared Survey Explorer (WISE). The elliptical galaxies were selected from the Sloan Digital Sky Survey (SDSS) MPA-JHU catalog and morphology classified by Galaxy Zoo catalog....

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Main Authors: Ali, Nur Hidayah Mohd, Abidin, Zamri Zainal, Hwang, Chorng-Yuan
Format: Article
Published: Penerbit Universiti Kebangsaan Malaysia 2022
Subjects:
QB Astronomy
QC Physics
Online Access:http://eprints.um.edu.my/40423/
https://doi.org/10.17576/jsm-2022-5109-25
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spelling my.um.eprints.404232024-07-15T08:11:07Z http://eprints.um.edu.my/40423/ Star formation rates for elliptical galaxies derived from the WISE 12-and 22-mu m emission Ali, Nur Hidayah Mohd Abidin, Zamri Zainal Hwang, Chorng-Yuan QB Astronomy QC Physics We investigated the star formation rates (SFRs) of selected elliptical galaxies using the infrared data from the Widefield Infrared Survey Explorer (WISE). The elliptical galaxies were selected from the Sloan Digital Sky Survey (SDSS) MPA-JHU catalog and morphology classified by Galaxy Zoo catalog. We used the 3.4-mu m emission (W1) of WISE to represent the stellar mass of the galaxies and the 12- and 22-mu m emission (W3 and W4) of WISE to represent the star formation activity of the galaxies. The W3- and W4-based star formation rates are usually overestimated due to the star emission in low star-forming galaxies. Stellar continuum emission could contribute to MIR fluxes of elliptical galaxies with an average overestimation of similar to 13.95 and similar to 0.77% from the observed fluxes of WISE W3 and W4-bands, which determined by using the estimated WISE W3 and W4 flux correction factors. Better SFRs can be obtained by subtracting the stellar contribution of the sources. Our result highlights the possibility of the existence of unknown mechanisms triggering the continuous star formation activities in elliptical galaxies. Penerbit Universiti Kebangsaan Malaysia 2022-09 Article PeerReviewed Ali, Nur Hidayah Mohd and Abidin, Zamri Zainal and Hwang, Chorng-Yuan (2022) Star formation rates for elliptical galaxies derived from the WISE 12-and 22-mu m emission. Sains Malaysiana, 51 (9). pp. 3059-3068. ISSN 0126-6039, DOI https://doi.org/10.17576/jsm-2022-5109-25 <https://doi.org/10.17576/jsm-2022-5109-25>. https://doi.org/10.17576/jsm-2022-5109-25 10.17576/jsm-2022-5109-25
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QB Astronomy
QC Physics
spellingShingle QB Astronomy
QC Physics
Ali, Nur Hidayah Mohd
Abidin, Zamri Zainal
Hwang, Chorng-Yuan
Star formation rates for elliptical galaxies derived from the WISE 12-and 22-mu m emission
description We investigated the star formation rates (SFRs) of selected elliptical galaxies using the infrared data from the Widefield Infrared Survey Explorer (WISE). The elliptical galaxies were selected from the Sloan Digital Sky Survey (SDSS) MPA-JHU catalog and morphology classified by Galaxy Zoo catalog. We used the 3.4-mu m emission (W1) of WISE to represent the stellar mass of the galaxies and the 12- and 22-mu m emission (W3 and W4) of WISE to represent the star formation activity of the galaxies. The W3- and W4-based star formation rates are usually overestimated due to the star emission in low star-forming galaxies. Stellar continuum emission could contribute to MIR fluxes of elliptical galaxies with an average overestimation of similar to 13.95 and similar to 0.77% from the observed fluxes of WISE W3 and W4-bands, which determined by using the estimated WISE W3 and W4 flux correction factors. Better SFRs can be obtained by subtracting the stellar contribution of the sources. Our result highlights the possibility of the existence of unknown mechanisms triggering the continuous star formation activities in elliptical galaxies.
format Article
author Ali, Nur Hidayah Mohd
Abidin, Zamri Zainal
Hwang, Chorng-Yuan
author_facet Ali, Nur Hidayah Mohd
Abidin, Zamri Zainal
Hwang, Chorng-Yuan
author_sort Ali, Nur Hidayah Mohd
title Star formation rates for elliptical galaxies derived from the WISE 12-and 22-mu m emission
title_short Star formation rates for elliptical galaxies derived from the WISE 12-and 22-mu m emission
title_full Star formation rates for elliptical galaxies derived from the WISE 12-and 22-mu m emission
title_fullStr Star formation rates for elliptical galaxies derived from the WISE 12-and 22-mu m emission
title_full_unstemmed Star formation rates for elliptical galaxies derived from the WISE 12-and 22-mu m emission
title_sort star formation rates for elliptical galaxies derived from the wise 12-and 22-mu m emission
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2022
url http://eprints.um.edu.my/40423/
https://doi.org/10.17576/jsm-2022-5109-25
_version_ 1805881118778458112
score 13.222552

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