A CO Survey of SpARCS Star-forming Brightest Cluster Galaxies: Evidence for Uniformity in BCG Molecular Gas Processing across Cosmic Time
We present ALMA CO (2-1) detections of 24 star-forming brightest cluster galaxies (BCGs) over 0.2 < z < 1.2, constituting the largest and most distant sample of molecular gas measurements in BCGs to date. The BCGs are selected from the Spitzer Adaptation of the Red-Sequence Cluster Survey (SpA...
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| Veröffentlicht in: | Astrophysical journal. Letters 2021-03, Vol.909 (2), p.L29 |
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| creator | Dunne, Delaney A. Webb, Tracy M. A. Noble, Allison Lidman, Christopher Shipley, Heath Muzzin, Adam Wilson, Gillian Yee, H. K. C. |
| description | We present ALMA CO (2-1) detections of 24 star-forming brightest cluster galaxies (BCGs) over 0.2 <
z
< 1.2, constituting the largest and most distant sample of molecular gas measurements in BCGs to date. The BCGs are selected from the Spitzer Adaptation of the Red-Sequence Cluster Survey (SpARCS) to be IR-bright and therefore star-forming. We find that molecular gas is common in star-forming BCGs, detecting CO at a detection rate of 80% in our target sample of 30 objects. We additionally provide measurements of the star formation rate and stellar mass, calculated from existing MIPS 24
μ
m and IRAC 3.6
μ
m fluxes, respectively. We find these galaxies have molecular gas masses of 0.7–11.0 × 10
10
M
⊙
, comparable to other BCGs in this redshift range, and specific star formation rates that trace the main sequence of Elbaz et al. We compare our BCGs to those of the lower-redshift, cooling-flow BCG sample assembled by Edge and find that at
z
≲ 0.6 the two samples show very similar correlations between their gas masses and specific SFRs. We suggest that, in this redshift regime, the ∼10% of BCGs that are star-forming process accreted molecular gas into stars through means that are agnostic to both their redshift and their cluster mass. |
| doi_str_mv | 10.3847/2041-8213/abeb6f |
| format | Article |
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z
< 1.2, constituting the largest and most distant sample of molecular gas measurements in BCGs to date. The BCGs are selected from the Spitzer Adaptation of the Red-Sequence Cluster Survey (SpARCS) to be IR-bright and therefore star-forming. We find that molecular gas is common in star-forming BCGs, detecting CO at a detection rate of 80% in our target sample of 30 objects. We additionally provide measurements of the star formation rate and stellar mass, calculated from existing MIPS 24
μ
m and IRAC 3.6
μ
m fluxes, respectively. We find these galaxies have molecular gas masses of 0.7–11.0 × 10
10
M
⊙
, comparable to other BCGs in this redshift range, and specific star formation rates that trace the main sequence of Elbaz et al. We compare our BCGs to those of the lower-redshift, cooling-flow BCG sample assembled by Edge and find that at
z
≲ 0.6 the two samples show very similar correlations between their gas masses and specific SFRs. We suggest that, in this redshift regime, the ∼10% of BCGs that are star-forming process accreted molecular gas into stars through means that are agnostic to both their redshift and their cluster mass.</description><identifier>ISSN: 2041-8205</identifier><identifier>EISSN: 2041-8213</identifier><identifier>DOI: 10.3847/2041-8213/abeb6f</identifier><language>eng</language><publisher>Austin: The American Astronomical Society</publisher><subject>Brightest cluster galaxies ; Carbon monoxide ; Cooling flows (astrophysics) ; Fluxes ; Galactic and extragalactic astronomy ; Galaxies ; Galaxy clusters ; Galaxy evolution ; Molecular gas ; Molecular gases ; Object recognition ; Polls & surveys ; Red shift ; Star & galaxy formation ; Star formation ; Star formation rate ; Stellar mass</subject><ispartof>Astrophysical journal. Letters, 2021-03, Vol.909 (2), p.L29</ispartof><rights>2021. The American Astronomical Society. All rights reserved.</rights><rights>Copyright IOP Publishing Mar 01, 2021</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c381t-3bc632165779e1c83768db9f173569518bfb3c3f97590b717c8aa664cbee790c3</citedby><cites>FETCH-LOGICAL-c381t-3bc632165779e1c83768db9f173569518bfb3c3f97590b717c8aa664cbee790c3</cites><orcidid>0000-0003-4935-2720 ; 0000-0003-1832-4137 ; 0000-0003-1731-0497 ; 0000-0002-9330-9108 ; 0000-0002-0104-9653 ; 0000-0002-5223-8315</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.3847/2041-8213/abeb6f/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,780,784,27924,27925,38868,38890,53840,53867</link.rule.ids><linktorsrc>$$Uhttps://iopscience.iop.org/article/10.3847/2041-8213/abeb6f$$EView_record_in_IOP_Publishing$$FView_record_in_$$GIOP_Publishing</linktorsrc></links><search><creatorcontrib>Dunne, Delaney A.</creatorcontrib><creatorcontrib>Webb, Tracy M. A.</creatorcontrib><creatorcontrib>Noble, Allison</creatorcontrib><creatorcontrib>Lidman, Christopher</creatorcontrib><creatorcontrib>Shipley, Heath</creatorcontrib><creatorcontrib>Muzzin, Adam</creatorcontrib><creatorcontrib>Wilson, Gillian</creatorcontrib><creatorcontrib>Yee, H. K. C.</creatorcontrib><title>A CO Survey of SpARCS Star-forming Brightest Cluster Galaxies: Evidence for Uniformity in BCG Molecular Gas Processing across Cosmic Time</title><title>Astrophysical journal. Letters</title><addtitle>APJL</addtitle><addtitle>Astrophys. J. Lett</addtitle><description>We present ALMA CO (2-1) detections of 24 star-forming brightest cluster galaxies (BCGs) over 0.2 <
z
< 1.2, constituting the largest and most distant sample of molecular gas measurements in BCGs to date. The BCGs are selected from the Spitzer Adaptation of the Red-Sequence Cluster Survey (SpARCS) to be IR-bright and therefore star-forming. We find that molecular gas is common in star-forming BCGs, detecting CO at a detection rate of 80% in our target sample of 30 objects. We additionally provide measurements of the star formation rate and stellar mass, calculated from existing MIPS 24
μ
m and IRAC 3.6
μ
m fluxes, respectively. We find these galaxies have molecular gas masses of 0.7–11.0 × 10
10
M
⊙
, comparable to other BCGs in this redshift range, and specific star formation rates that trace the main sequence of Elbaz et al. We compare our BCGs to those of the lower-redshift, cooling-flow BCG sample assembled by Edge and find that at
z
≲ 0.6 the two samples show very similar correlations between their gas masses and specific SFRs. We suggest that, in this redshift regime, the ∼10% of BCGs that are star-forming process accreted molecular gas into stars through means that are agnostic to both their redshift and their cluster mass.</description><subject>Brightest cluster galaxies</subject><subject>Carbon monoxide</subject><subject>Cooling flows (astrophysics)</subject><subject>Fluxes</subject><subject>Galactic and extragalactic astronomy</subject><subject>Galaxies</subject><subject>Galaxy clusters</subject><subject>Galaxy evolution</subject><subject>Molecular gas</subject><subject>Molecular gases</subject><subject>Object recognition</subject><subject>Polls & surveys</subject><subject>Red shift</subject><subject>Star & galaxy formation</subject><subject>Star formation</subject><subject>Star formation rate</subject><subject>Stellar mass</subject><issn>2041-8205</issn><issn>2041-8213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp1kMtOwzAQRSMEEs89y5GQWBHwo4ltdm0EBamoiNK15bhOcZXGwU4Q_QT-moQi2MBqRqNz78zcKDrF6JLyAbsiaIBjTjC9UrnJ02InOvgZ7f70KNmPDkNYIURQivlB9DGEbAqz1r-ZDbgCZvXwKZvBrFE-Lpxf22oJI2-XL40JDWRlGxrjYaxK9W5NuIabN7swlTbQwTCv7Jem2YCtYJSN4cGVRrel6iUBHr3TJoTeU2nvQoDMhbXV8GzX5jjaK1QZzMl3PYrmtzfP2V08mY7vs-Ek1pTjJqa5TinBacKYMFhzylK-yEWBGU1SkWCeFznVtBAsEShnmGmuVJoOdG4ME0jTo-hs61t799p2X8mVa33VrZQkQVRQQQjvKLSlvu70ppC1t2vlNxIj2Qcu-0Rln67cBt5JzrcS6-pfT1WvSimQkEROiJD1ogcv_gD_9f0EMAuPSQ</recordid><startdate>20210301</startdate><enddate>20210301</enddate><creator>Dunne, Delaney A.</creator><creator>Webb, Tracy M. 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C.</creator><general>The American Astronomical Society</general><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-4935-2720</orcidid><orcidid>https://orcid.org/0000-0003-1832-4137</orcidid><orcidid>https://orcid.org/0000-0003-1731-0497</orcidid><orcidid>https://orcid.org/0000-0002-9330-9108</orcidid><orcidid>https://orcid.org/0000-0002-0104-9653</orcidid><orcidid>https://orcid.org/0000-0002-5223-8315</orcidid></search><sort><creationdate>20210301</creationdate><title>A CO Survey of SpARCS Star-forming Brightest Cluster Galaxies: Evidence for Uniformity in BCG Molecular Gas Processing across Cosmic Time</title><author>Dunne, Delaney A. ; Webb, Tracy M. A. ; Noble, Allison ; Lidman, Christopher ; Shipley, Heath ; Muzzin, Adam ; Wilson, Gillian ; Yee, H. K. 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A.</au><au>Noble, Allison</au><au>Lidman, Christopher</au><au>Shipley, Heath</au><au>Muzzin, Adam</au><au>Wilson, Gillian</au><au>Yee, H. K. C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A CO Survey of SpARCS Star-forming Brightest Cluster Galaxies: Evidence for Uniformity in BCG Molecular Gas Processing across Cosmic Time</atitle><jtitle>Astrophysical journal. Letters</jtitle><stitle>APJL</stitle><addtitle>Astrophys. J. Lett</addtitle><date>2021-03-01</date><risdate>2021</risdate><volume>909</volume><issue>2</issue><spage>L29</spage><pages>L29-</pages><issn>2041-8205</issn><eissn>2041-8213</eissn><abstract>We present ALMA CO (2-1) detections of 24 star-forming brightest cluster galaxies (BCGs) over 0.2 <
z
< 1.2, constituting the largest and most distant sample of molecular gas measurements in BCGs to date. The BCGs are selected from the Spitzer Adaptation of the Red-Sequence Cluster Survey (SpARCS) to be IR-bright and therefore star-forming. We find that molecular gas is common in star-forming BCGs, detecting CO at a detection rate of 80% in our target sample of 30 objects. We additionally provide measurements of the star formation rate and stellar mass, calculated from existing MIPS 24
μ
m and IRAC 3.6
μ
m fluxes, respectively. We find these galaxies have molecular gas masses of 0.7–11.0 × 10
10
M
⊙
, comparable to other BCGs in this redshift range, and specific star formation rates that trace the main sequence of Elbaz et al. We compare our BCGs to those of the lower-redshift, cooling-flow BCG sample assembled by Edge and find that at
z
≲ 0.6 the two samples show very similar correlations between their gas masses and specific SFRs. We suggest that, in this redshift regime, the ∼10% of BCGs that are star-forming process accreted molecular gas into stars through means that are agnostic to both their redshift and their cluster mass.</abstract><cop>Austin</cop><pub>The American Astronomical Society</pub><doi>10.3847/2041-8213/abeb6f</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0003-4935-2720</orcidid><orcidid>https://orcid.org/0000-0003-1832-4137</orcidid><orcidid>https://orcid.org/0000-0003-1731-0497</orcidid><orcidid>https://orcid.org/0000-0002-9330-9108</orcidid><orcidid>https://orcid.org/0000-0002-0104-9653</orcidid><orcidid>https://orcid.org/0000-0002-5223-8315</orcidid><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 2041-8205 |
| ispartof | Astrophysical journal. Letters, 2021-03, Vol.909 (2), p.L29 |
| issn | 2041-8205 2041-8213 |
| language | eng |
| recordid | cdi_proquest_journals_2503939228 |
| source | Open Access: IOP Publishing Free Content |
| subjects | Brightest cluster galaxies Carbon monoxide Cooling flows (astrophysics) Fluxes Galactic and extragalactic astronomy Galaxies Galaxy clusters Galaxy evolution Molecular gas Molecular gases Object recognition Polls & surveys Red shift Star & galaxy formation Star formation Star formation rate Stellar mass |
| title | A CO Survey of SpARCS Star-forming Brightest Cluster Galaxies: Evidence for Uniformity in BCG Molecular Gas Processing across Cosmic Time |
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