Cover Image

Is atomic carbon a good tracer of molecular gas in metal-poor galaxies?

Carbon monoxide (CO) is widely used as a tracer of molecular hydrogen (H2) in metal-rich galaxies, but is known to become - ineffective in low-metallicity dwarf galaxies. Atomic carbon has been suggested as a superior tracer of H2 in these metal-poor systems, but its suitability remains unproven. To...

Full description

Saved in:
Bibliographic Details
Main Authors: Glover, Simon (Author) , Clark, Paul C. (Author)
Format: Article (Journal)
Language:English
Published: March 2016
In: Monthly notices of the Royal Astronomical Society
Year: 2016, Volume: 456, Pages: 3596-3609
ISSN:1365-2966
DOI:10.1093/mnras/stv2863
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1093/mnras/stv2863
Verlag, lizenzpflichtig, Volltext: http://adsabs.harvard.edu/abs/2016MNRAS.456.3596G
Get full text
Author Notes:Simon C.O. Glover and Paul C. Clark

MARC

LEADER 00000caa a2200000 c 4500
001 1701106981
003 DE-627
005 20220818125309.0
007 cr uuu---uuuuu
008 200619s2016 xx |||||o 00| ||eng c
024 7 |a 10.1093/mnras/stv2863  |2 doi 
035 |a (DE-627)1701106981 
035 |a (DE-599)KXP1701106981 
035 |a (OCoLC)1341340865 
040 |a DE-627  |b ger  |c DE-627  |e rda 
041 |a eng 
084 |a 29  |2 sdnb 
100 1 |a Glover, Simon  |e VerfasserIn  |0 (DE-588)1043520449  |0 (DE-627)770635903  |0 (DE-576)394879252  |4 aut 
245 1 0 |a Is atomic carbon a good tracer of molecular gas in metal-poor galaxies?  |c Simon C.O. Glover and Paul C. Clark 
264 1 |c March 2016 
300 |a 14 
336 |a Text  |b txt  |2 rdacontent 
337 |a Computermedien  |b c  |2 rdamedia 
338 |a Online-Ressource  |b cr  |2 rdacarrier 
500 |a Gesehen am 19.06.2020 
520 |a Carbon monoxide (CO) is widely used as a tracer of molecular hydrogen (H2) in metal-rich galaxies, but is known to become - ineffective in low-metallicity dwarf galaxies. Atomic carbon has been suggested as a superior tracer of H2 in these metal-poor systems, but its suitability remains unproven. To help us to assess how well atomic carbon traces H2 at low metallicity, we have performed a series of numerical simulations of turbulent molecular clouds that cover a wide range of different metallicities. Our - simulations demonstrate that in star-forming clouds, the conversion factor between [C I] emission and H2 mass, XCI, scales approximately as XCI ∝ Z-1. We recover a similar scaling for the CO-to-H2 conversion factor, XCO, but find that at this point in the evolution of the clouds, XCO is consistently smaller than XCI, by a factor of a few or more. We have also examined how XCI and XCO evolve with time. We find that XCI does not vary strongly with time, demonstrating that atomic carbon remains a good tracer of H2 in metal-poor systems even at times - significantly before the onset of star formation. On the other hand, XCO varies very strongly with time in metal-poor clouds, showing that CO does not trace H2 well in starless clouds at low metallicity. 
650 4 |a galaxies: ISM 
650 4 |a ISM: clouds 
650 4 |a ISM: molecules 
650 4 |a stars: formation 
700 1 |a Clark, Paul C.  |d 1979-  |e VerfasserIn  |0 (DE-588)1043520252  |0 (DE-627)770635490  |0 (DE-576)394879236  |4 aut 
773 0 8 |i Enthalten in  |a Royal Astronomical Society  |t Monthly notices of the Royal Astronomical Society  |d Oxford : Oxford Univ. Press, 1827  |g 456(2016), Seite 3596-3609  |h Online-Ressource  |w (DE-627)314059164  |w (DE-600)2016084-7  |w (DE-576)090955420  |x 1365-2966  |7 nnas 
773 1 8 |g volume:456  |g year:2016  |g pages:3596-3609  |g extent:14  |a Is atomic carbon a good tracer of molecular gas in metal-poor galaxies? 
856 4 0 |u https://doi.org/10.1093/mnras/stv2863  |x Verlag  |x Resolving-System  |z lizenzpflichtig  |3 Volltext 
856 4 0 |u http://adsabs.harvard.edu/abs/2016MNRAS.456.3596G  |x Verlag  |z lizenzpflichtig  |3 Volltext 
951 |a AR 
992 |a 20200619 
993 |a Article 
994 |a 2016 
998 |g 1043520252  |a Clark, Paul C.  |m 1043520252:Clark, Paul C.  |d 910000  |d 950000  |d 950950  |e 910000PC1043520252  |e 950000PC1043520252  |e 950950PC1043520252  |k 0/910000/  |k 1/910000/950000/  |k 2/910000/950000/950950/  |p 2  |y j 
998 |g 1043520449  |a Glover, Simon  |m 1043520449:Glover, Simon  |d 700000  |d 714000  |d 714200  |e 700000PG1043520449  |e 714000PG1043520449  |e 714200PG1043520449  |k 0/700000/  |k 1/700000/714000/  |k 2/700000/714000/714200/  |p 1  |x j 
999 |a KXP-PPN1701106981  |e 368878779X 
BIB |a Y 
SER |a journal 
JSO |a {"type":{"bibl":"article-journal","media":"Online-Ressource"},"name":{"displayForm":["Simon C.O. Glover and Paul C. Clark"]},"language":["eng"],"relHost":[{"type":{"bibl":"periodical","media":"Online-Ressource"},"corporate":[{"role":"aut","display":"Royal Astronomical Society"}],"pubHistory":["1.1827 -"],"disp":"Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society","part":{"text":"456(2016), Seite 3596-3609","year":"2016","volume":"456","extent":"14","pages":"3596-3609"},"language":["eng"],"physDesc":[{"extent":"Online-Ressource"}],"origin":[{"dateIssuedKey":"1827","dateIssuedDisp":"1827-","publisherPlace":"Oxford ; Oxford [u.a.] ; Oxford [u.a.]","publisher":"Oxford Univ. Press ; Blackwell ; Wiley-Blackwell"}],"note":["Gesehen am 15.01.2018"],"recId":"314059164","id":{"zdb":["2016084-7"],"issn":["1365-2966"],"eki":["314059164"],"doi":["10.1111/(ISSN)1365-2966"]},"title":[{"title_sort":"Monthly notices of the Royal Astronomical Society","title":"Monthly notices of the Royal Astronomical Society"}]}],"physDesc":[{"extent":"14 S."}],"origin":[{"dateIssuedDisp":"March 2016","dateIssuedKey":"2016"}],"person":[{"role":"aut","given":"Simon","display":"Glover, Simon","family":"Glover"},{"family":"Clark","display":"Clark, Paul C.","role":"aut","given":"Paul C."}],"note":["Gesehen am 19.06.2020"],"recId":"1701106981","id":{"doi":["10.1093/mnras/stv2863"],"eki":["1701106981"]},"title":[{"title":"Is atomic carbon a good tracer of molecular gas in metal-poor galaxies?","title_sort":"Is atomic carbon a good tracer of molecular gas in metal-poor galaxies?"}]} 
SRT |a GLOVERSIMOISATOMICCA2016 

Similar Items