NEATH: II. N2H+ as a tracer of imminent star formation in quiescent high-density gas
Star formation activity in molecular clouds is often found to be correlated with the amount of material above a column density threshold of ∼1022 cm−2. Attempts to connect this column density threshold to a volume density above which star formation can occur are limited by the fact that the volume...
Gespeichert in:
| Hauptverfasser: | , , , , , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
December 2023
|
| In: |
Monthly notices of the Royal Astronomical Society
Year: 2023, Jahrgang: 526, Heft: 4, Pages: 4952-4960 |
| ISSN: | 1365-2966 |
| DOI: | 10.1093/mnras/stad3089 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1093/mnras/stad3089
|
| Verfasserangaben: | F.D. Priestley, P.C. Clark, S.C.O. Glover, S.E. Ragan, O. Fehér, L.R. Prole and R.S. Klessen |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1880425114 | ||
| 003 | DE-627 | ||
| 005 | 20240307024113.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240209s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1093/mnras/stad3089 |2 doi | |
| 035 | |a (DE-627)1880425114 | ||
| 035 | |a (DE-599)KXP1880425114 | ||
| 035 | |a (OCoLC)1425200669 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Priestley, Felix |e VerfasserIn |0 (DE-588)1304272575 |0 (DE-627)1860442919 |4 aut | |
| 245 | 1 | 0 | |a NEATH |b II. N2H+ as a tracer of imminent star formation in quiescent high-density gas |c F.D. Priestley, P.C. Clark, S.C.O. Glover, S.E. Ragan, O. Fehér, L.R. Prole and R.S. Klessen |
| 246 | 3 | 3 | |a NEATH$dII. N 2 H + as a tracer of imminent star formation in quiescent high-density gas |
| 246 | 3 | 3 | |a NEATH$dII. N two H plus as a tracer of imminent star formation in quiescent high-density gas |
| 264 | 1 | |c December 2023 | |
| 300 | |b Illustrationen | ||
| 300 | |a 9 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Im Text ist "2" tiefgestellt und "+" hochgestellt | ||
| 500 | |a Gesehen am 09.02.2024 | ||
| 500 | |a Veröffentlicht: 10. Oktober 2023 | ||
| 520 | |a Star formation activity in molecular clouds is often found to be correlated with the amount of material above a column density threshold of ∼1022 cm−2. Attempts to connect this column density threshold to a volume density above which star formation can occur are limited by the fact that the volume density of gas is difficult to reliably measure from observations. We post-process hydrodynamical simulations of molecular clouds with a time-dependent chemical network, and investigate the connection between commonly observed molecular species and star formation activity. We find that many molecules widely assumed to specifically trace the dense, star-forming component of molecular clouds (e.g. HCN, HCO+, CS) actually also exist in substantial quantities in material only transiently enhanced in density, which will eventually return to a more diffuse state without forming any stars. By contrast, N2H+ only exists in detectable quantities above a volume density of , the point at which CO, which reacts destructively with N2H+, begins to deplete out of the gas phase on to grain surfaces. This density threshold for detectable quantities of N2H+ corresponds very closely to the volume density at which gas becomes irreversibly gravitationally bound in the simulations: the material traced by N2H+ never reverts to lower densities, and quiescent regions of molecular clouds with visible N2H+ emission are destined to eventually form stars. The N2H+ line intensity is likely to directly correlate with the star formation rate averaged over time-scales of around a Myr. | ||
| 700 | 1 | |a Clark, P C |e VerfasserIn |4 aut | |
| 700 | 1 | |a Glover, Simon |e VerfasserIn |0 (DE-588)1043520449 |0 (DE-627)770635903 |0 (DE-576)394879252 |4 aut | |
| 700 | 1 | |a Ragan, S E |e VerfasserIn |4 aut | |
| 700 | 1 | |a Fehér, O |e VerfasserIn |4 aut | |
| 700 | 1 | |a Prole, L R |e VerfasserIn |4 aut | |
| 700 | 1 | |a Klessen, Ralf S. |d 1968- |e VerfasserIn |0 (DE-588)120533820 |0 (DE-627)392381532 |0 (DE-576)178685399 |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 526(2023), 4 vom: Dez., Seite 4952-4960 |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:526 |g year:2023 |g number:4 |g month:12 |g pages:4952-4960 |g extent:9 |a NEATH II. N2H+ as a tracer of imminent star formation in quiescent high-density gas |
| 856 | 4 | 0 | |u https://doi.org/10.1093/mnras/stad3089 |x Verlag |x Resolving-System |z lizenzpflichtig |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20240209 | ||
| 993 | |a Article | ||
| 994 | |a 2023 | ||
| 998 | |g 120533820 |a Klessen, Ralf S. |m 120533820:Klessen, Ralf S. |d 700000 |d 714000 |d 714200 |e 700000PK120533820 |e 714000PK120533820 |e 714200PK120533820 |k 0/700000/ |k 1/700000/714000/ |k 2/700000/714000/714200/ |p 7 |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 3 | ||
| 999 | |a KXP-PPN1880425114 |e 4481197234 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"note":["Im Text ist \"2\" tiefgestellt und \"+\" hochgestellt","Gesehen am 09.02.2024","Veröffentlicht: 10. Oktober 2023"],"language":["eng"],"titleAlt":[{"title":"NEATH$dII. N 2 H + as a tracer of imminent star formation in quiescent high-density gas"},{"title":"NEATH$dII. N two H plus as a tracer of imminent star formation in quiescent high-density gas"}],"type":{"media":"Online-Ressource","bibl":"article-journal"},"person":[{"given":"Felix","display":"Priestley, Felix","family":"Priestley","role":"aut"},{"given":"P C","display":"Clark, P C","family":"Clark","role":"aut"},{"role":"aut","family":"Glover","display":"Glover, Simon","given":"Simon"},{"display":"Ragan, S E","given":"S E","family":"Ragan","role":"aut"},{"given":"O","display":"Fehér, O","role":"aut","family":"Fehér"},{"family":"Prole","role":"aut","display":"Prole, L R","given":"L R"},{"family":"Klessen","role":"aut","display":"Klessen, Ralf S.","given":"Ralf S."}],"recId":"1880425114","name":{"displayForm":["F.D. Priestley, P.C. Clark, S.C.O. Glover, S.E. Ragan, O. Fehér, L.R. Prole and R.S. Klessen"]},"relHost":[{"pubHistory":["1.1827 -"],"note":["Gesehen am 15.01.2018"],"language":["eng"],"part":{"volume":"526","year":"2023","text":"526(2023), 4 vom: Dez., Seite 4952-4960","extent":"9","pages":"4952-4960","issue":"4"},"disp":"Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society","type":{"media":"Online-Ressource","bibl":"periodical"},"corporate":[{"role":"aut","display":"Royal Astronomical Society"}],"recId":"314059164","origin":[{"publisher":"Oxford Univ. Press ; Blackwell ; Wiley-Blackwell","dateIssuedDisp":"1827-","dateIssuedKey":"1827","publisherPlace":"Oxford ; Oxford [u.a.] ; Oxford [u.a.]"}],"title":[{"title":"Monthly notices of the Royal Astronomical Society","title_sort":"Monthly notices of the Royal Astronomical Society"}],"physDesc":[{"extent":"Online-Ressource"}],"id":{"doi":["10.1111/(ISSN)1365-2966"],"zdb":["2016084-7"],"issn":["1365-2966"],"eki":["314059164"]}}],"origin":[{"dateIssuedDisp":"December 2023","dateIssuedKey":"2023"}],"title":[{"title_sort":"NEATH","title":"NEATH","subtitle":"II. N2H+ as a tracer of imminent star formation in quiescent high-density gas"}],"physDesc":[{"noteIll":"Illustrationen","extent":"9 S."}],"id":{"doi":["10.1093/mnras/stad3089"],"eki":["1880425114"]}} | ||
| SRT | |a PRIESTLEYFNEATH2023 | ||