Buchumschlag

LEGO: II. A 3mm molecular line study covering 100 pc of one of the most actively star-forming portions within the Milky Way disc

The current generation of (sub)mm-telescopes has allowed molecular line emission to become a major tool for studying the physical, kinematic, and chemical properties of extragalactic systems, yet exploiting these observations requires a detailed understanding of where emission lines originate within...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Barnes, Ashley T. (VerfasserIn) , Kauffmann, J. (VerfasserIn) , Bigiel, F. (VerfasserIn) , Brinkmann, N. (VerfasserIn) , Colombo, D. (VerfasserIn) , Guzman, A. E. (VerfasserIn) , Kim, W. J. (VerfasserIn) , Szucs, L. (VerfasserIn) , Wakelam, V. (VerfasserIn) , Aalto, S. (VerfasserIn) , Albertsson, T. (VerfasserIn) , Evans, N. J. (VerfasserIn) , Glover, Simon (VerfasserIn) , Goldsmith, P. F. (VerfasserIn) , Kramer, C. (VerfasserIn) , Menten, K. (VerfasserIn) , Nishimura, Y. (VerfasserIn) , Viti, S. (VerfasserIn) , Watanabe, Y. (VerfasserIn) , Weiss, A. (VerfasserIn) , Wienen, M. (VerfasserIn) , Wiesemeyer, H. (VerfasserIn) , Wyrowski, F. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: Sept 2020
In: Monthly notices of the Royal Astronomical Society
Year: 2020, Jahrgang: 497, Heft: 2, Pages: 1972-2001
ISSN:1365-2966
DOI:10.1093/mnras/staa1814
Online-Zugang:Resolving-System, Volltext: https://doi.org/10.1093/mnras/staa1814
Volltext
Verfasserangaben:A.T. Barnes, J. Kauffmann, F. Bigiel, N. Brinkmann, D. Colombo, A.E. Guzman, W.J. Kim, L. Szucs, V. Wakelam, S. Aalto, T. Albertsson, N.J. Evans, S.C.O. Glover, P.F. Goldsmith, C. Kramer, K. Menten, Y. Nishimura, S. Viti, Y. Watanabe, A. Weiss, M. Wienen, H. Wiesemeyer, F. Wyrowski

MARC

LEADER 00000caa a2200000 c 4500
001 1744765197
003 DE-627
005 20221006082045.0
007 cr uuu---uuuuu
008 210115s2020 xx |||||o 00| ||eng c
024 7 |a 10.1093/mnras/staa1814  |2 doi 
035 |a (DE-627)1744765197 
035 |a (DE-599)KXP1744765197 
035 |a (OCoLC)1341388775 
040 |a DE-627  |b ger  |c DE-627  |e rda 
041 |a eng 
084 |a 29  |2 sdnb 
100 1 |a Barnes, Ashley T.  |e VerfasserIn  |0 (DE-588)1176978950  |0 (DE-627)1048759733  |0 (DE-576)517203146  |4 aut 
245 1 0 |a LEGO  |b II. A 3mm molecular line study covering 100 pc of one of the most actively star-forming portions within the Milky Way disc  |c A.T. Barnes, J. Kauffmann, F. Bigiel, N. Brinkmann, D. Colombo, A.E. Guzman, W.J. Kim, L. Szucs, V. Wakelam, S. Aalto, T. Albertsson, N.J. Evans, S.C.O. Glover, P.F. Goldsmith, C. Kramer, K. Menten, Y. Nishimura, S. Viti, Y. Watanabe, A. Weiss, M. Wienen, H. Wiesemeyer, F. Wyrowski 
264 1 |c Sept 2020 
300 |a 30 
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 15.01.2021 
520 |a The current generation of (sub)mm-telescopes has allowed molecular line emission to become a major tool for studying the physical, kinematic, and chemical properties of extragalactic systems, yet exploiting these observations requires a detailed understanding of where emission lines originate within the Milky Way. In this paper, we present 60'' (similar to 3pc) resolution observations of many 3mm-band molecular lines across a large map of the W49 massive star-forming region (similar to 100x100pc at 11kpc), which were taken as part of the 'LEGO' IRAM-30m large project. We find that the spatial extent or brightness of the molecular line transitions are not well correlated with their critical densities, highlighting abundance and optical depth must be considered when estimating line emission characteristics. We explore how the total emission and emission efficiency (i.e. line brightness per H-2 column density) of the line emission vary as a function of molecular hydrogen column density and dust temperature. We find that there is not a single region of this parameter space responsible for the brightest and most efficiently emitting gas for all species. For example, we find that the HCN transition shows high emission efficiency at high column density (10(22)cm(-2)) and moderate temperatures (35K), whilst e.g. N2H+ emits most efficiently towards lower temperatures (10(22)cm(-2); <20K). We determine XCO(1-0)similar to 0.3 x 10(20)cm(-2)(Kkms(-1))(-1), and alpha(HCN(1-0))similar to 30M(circle dot)(Kkms(-1)pc(2))(-1), which both differ significantly from the commonly adopted values. In all, these results suggest caution should be taken when interpreting molecular line emission. 
650 4 |a absorption 
650 4 |a cloud core 
650 4 |a depletion 
650 4 |a formation rates 
650 4 |a galactic plane 
650 4 |a galaxies: evolution 
650 4 |a galaxies: ISM 
650 4 |a galaxies: star formation 
650 4 |a hcn 
650 4 |a ISM: clouds 
650 4 |a ISM: molecules 
650 4 |a modeling co emission 
650 4 |a physical conditions 
650 4 |a stars: formation 
650 4 |a turbulence 
650 4 |a x factor 
700 1 |a Kauffmann, J.  |e VerfasserIn  |4 aut 
700 1 |a Bigiel, F.  |e VerfasserIn  |4 aut 
700 1 |a Brinkmann, N.  |e VerfasserIn  |4 aut 
700 1 |a Colombo, D.  |e VerfasserIn  |4 aut 
700 1 |a Guzman, A. E.  |e VerfasserIn  |4 aut 
700 1 |a Kim, W. J.  |e VerfasserIn  |4 aut 
700 1 |a Szucs, L.  |e VerfasserIn  |4 aut 
700 1 |a Wakelam, V.  |e VerfasserIn  |4 aut 
700 1 |a Aalto, S.  |e VerfasserIn  |4 aut 
700 1 |a Albertsson, T.  |e VerfasserIn  |4 aut 
700 1 |a Evans, N. J.  |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 Goldsmith, P. F.  |e VerfasserIn  |4 aut 
700 1 |a Kramer, C.  |e VerfasserIn  |4 aut 
700 1 |a Menten, K.  |e VerfasserIn  |4 aut 
700 1 |a Nishimura, Y.  |e VerfasserIn  |4 aut 
700 1 |a Viti, S.  |e VerfasserIn  |4 aut 
700 1 |a Watanabe, Y.  |e VerfasserIn  |4 aut 
700 1 |a Weiss, A.  |e VerfasserIn  |4 aut 
700 1 |a Wienen, M.  |e VerfasserIn  |4 aut 
700 1 |a Wiesemeyer, H.  |e VerfasserIn  |4 aut 
700 1 |a Wyrowski, F.  |e VerfasserIn  |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 497(2020), 2, Seite 1972-2001  |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:497  |g year:2020  |g number:2  |g pages:1972-2001  |g extent:30  |a LEGO II. A 3mm molecular line study covering 100 pc of one of the most actively star-forming portions within the Milky Way disc 
856 4 0 |u https://doi.org/10.1093/mnras/staa1814  |x Resolving-System  |x Verlag  |3 Volltext 
951 |a AR 
992 |a 20210115 
993 |a Article 
994 |a 2020 
998 |g 1043520449  |a Glover, Simon  |m 1043520449:Glover, Simon  |d 700000  |d 714000  |d 714200  |d 700000  |d 728500  |e 700000PG1043520449  |e 714000PG1043520449  |e 714200PG1043520449  |e 700000PG1043520449  |e 728500PG1043520449  |k 0/700000/  |k 1/700000/714000/  |k 2/700000/714000/714200/  |k 0/700000/  |k 1/700000/728500/  |p 13 
998 |g 1176978950  |a Barnes, Ashley T.  |m 1176978950:Barnes, Ashley T.  |p 1  |x j 
999 |a KXP-PPN1744765197  |e 3837363309 
BIB |a Y 
SER |a journal 
JSO |a {"relHost":[{"corporate":[{"display":"Royal Astronomical Society","role":"aut","roleDisplay":"VerfasserIn"}],"pubHistory":["1.1827 -"],"recId":"314059164","disp":"Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society","note":["Gesehen am 15.01.2018"],"title":[{"title_sort":"Monthly notices of the Royal Astronomical Society","title":"Monthly notices of the Royal Astronomical Society"}],"id":{"zdb":["2016084-7"],"eki":["314059164"],"doi":["10.1111/(ISSN)1365-2966"],"issn":["1365-2966"]},"physDesc":[{"extent":"Online-Ressource"}],"part":{"volume":"497","issue":"2","text":"497(2020), 2, Seite 1972-2001","pages":"1972-2001","year":"2020","extent":"30"},"type":{"bibl":"periodical","media":"Online-Ressource"},"origin":[{"dateIssuedDisp":"1827-","dateIssuedKey":"1827","publisherPlace":"Oxford ; Oxford [u.a.] ; Oxford [u.a.]","publisher":"Oxford Univ. Press ; Blackwell ; Wiley-Blackwell"}],"language":["eng"]}],"person":[{"given":"Ashley T.","role":"aut","display":"Barnes, Ashley T.","family":"Barnes","roleDisplay":"VerfasserIn"},{"roleDisplay":"VerfasserIn","family":"Kauffmann","role":"aut","display":"Kauffmann, J.","given":"J."},{"roleDisplay":"VerfasserIn","family":"Bigiel","display":"Bigiel, F.","role":"aut","given":"F."},{"roleDisplay":"VerfasserIn","family":"Brinkmann","given":"N.","role":"aut","display":"Brinkmann, N."},{"family":"Colombo","roleDisplay":"VerfasserIn","given":"D.","display":"Colombo, D.","role":"aut"},{"given":"A. E.","role":"aut","display":"Guzman, A. E.","family":"Guzman","roleDisplay":"VerfasserIn"},{"given":"W. J.","role":"aut","display":"Kim, W. J.","roleDisplay":"VerfasserIn","family":"Kim"},{"display":"Szucs, L.","role":"aut","given":"L.","family":"Szucs","roleDisplay":"VerfasserIn"},{"family":"Wakelam","roleDisplay":"VerfasserIn","display":"Wakelam, V.","role":"aut","given":"V."},{"given":"S.","role":"aut","display":"Aalto, S.","family":"Aalto","roleDisplay":"VerfasserIn"},{"family":"Albertsson","roleDisplay":"VerfasserIn","role":"aut","display":"Albertsson, T.","given":"T."},{"roleDisplay":"VerfasserIn","family":"Evans","display":"Evans, N. J.","role":"aut","given":"N. J."},{"role":"aut","display":"Glover, Simon","given":"Simon","family":"Glover","roleDisplay":"VerfasserIn"},{"given":"P. F.","role":"aut","display":"Goldsmith, P. F.","family":"Goldsmith","roleDisplay":"VerfasserIn"},{"display":"Kramer, C.","role":"aut","given":"C.","family":"Kramer","roleDisplay":"VerfasserIn"},{"role":"aut","display":"Menten, K.","given":"K.","family":"Menten","roleDisplay":"VerfasserIn"},{"roleDisplay":"VerfasserIn","family":"Nishimura","display":"Nishimura, Y.","role":"aut","given":"Y."},{"roleDisplay":"VerfasserIn","family":"Viti","role":"aut","display":"Viti, S.","given":"S."},{"role":"aut","display":"Watanabe, Y.","given":"Y.","roleDisplay":"VerfasserIn","family":"Watanabe"},{"given":"A.","display":"Weiss, A.","role":"aut","family":"Weiss","roleDisplay":"VerfasserIn"},{"given":"M.","display":"Wienen, M.","role":"aut","roleDisplay":"VerfasserIn","family":"Wienen"},{"given":"H.","role":"aut","display":"Wiesemeyer, H.","roleDisplay":"VerfasserIn","family":"Wiesemeyer"},{"given":"F.","role":"aut","display":"Wyrowski, F.","roleDisplay":"VerfasserIn","family":"Wyrowski"}],"name":{"displayForm":["A.T. Barnes, J. Kauffmann, F. Bigiel, N. Brinkmann, D. Colombo, A.E. Guzman, W.J. Kim, L. Szucs, V. Wakelam, S. Aalto, T. Albertsson, N.J. Evans, S.C.O. Glover, P.F. Goldsmith, C. Kramer, K. Menten, Y. Nishimura, S. Viti, Y. Watanabe, A. Weiss, M. Wienen, H. Wiesemeyer, F. Wyrowski"]},"physDesc":[{"extent":"30 S."}],"language":["eng"],"origin":[{"dateIssuedKey":"2020","dateIssuedDisp":"Sept 2020"}],"type":{"media":"Online-Ressource","bibl":"article-journal"},"note":["Gesehen am 15.01.2021"],"id":{"doi":["10.1093/mnras/staa1814"],"eki":["1744765197"]},"title":[{"subtitle":"II. A 3mm molecular line study covering 100 pc of one of the most actively star-forming portions within the Milky Way disc","title_sort":"LEGO","title":"LEGO"}],"recId":"1744765197"} 
SRT |a BARNESASHLLEGO2020 

Ähnliche Einträge