SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:research.chalmers.se:ca667122-4498-43a7-afb4-533c565fe40c"
 

Sökning: onr:"swepub:oai:research.chalmers.se:ca667122-4498-43a7-afb4-533c565fe40c" > ALMA resolves the r...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00006815naa a2200649 4500
001oai:research.chalmers.se:ca667122-4498-43a7-afb4-533c565fe40c
003SwePub
008200917s2020 | |||||||||||000 ||eng|
0247 a https://research.chalmers.se/publication/5191782 URI
0247 a https://doi.org/10.1051/0004-6361/2020382822 DOI
0247 a https://research.chalmers.se/publication/5196372 URI
040 a (SwePub)cth
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
1001 a Aalto, Susanne,d 1964u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)saalto
2451 0a ALMA resolves the remarkable molecular jet and rotating wind in the extremely radio-quiet galaxy NGC 1377
264 c 2020-08-21
264 1b EDP Sciences,c 2020
338 a electronic2 rdacarrier
520 a Submillimetre and millimetre line and continuum observations are important in probing the morphology, column density, and dynamics of the molecular gas and dust around obscured active galactic nuclei (AGNs) and their mechanical feedback. With very high-resolution (0.'' 02x0.'' 03 (2x3 pc)) ALMA 345 GHz observations of CO 3-2, HCO+ 4-3, vibrationally excited HCN 4-3 nu (2)=1f, and continuum we have studied the remarkable, extremely radio-quiet, molecular jet and wind of the lenticular galaxy NGC 1377. The outflow structure is resolved, revealing a 150 pc long, clumpy, high-velocity (similar to 600 km s(-1)), collimated molecular jet where the molecular emission is emerging from the spine of the jet with an average diameter of 3-7 pc. The jet widens to 10-15 pc about 25 pc from the centre, which is possibly due to jet-wind interactions. A narrow-angle (50 degrees -70 degrees), misaligned and rotating molecular wind surrounds the jet, and both are enveloped by a larger-scale CO-emitting structure at near-systemic velocity. The jet and narrow wind have steep radial gas excitation gradients and appear turbulent with high gas dispersion (sigma> 40 km s(-1)). The jet shows velocity reversals that we propose are caused by precession, or more episodic directional changes. We discuss the mechanisms powering the outflow, and we find that an important process for the molecular jet and narrow wind is likely magneto-centrifugal driving. In contrast, the large-scale CO-envelope may be a slow wind, or cocoon that stems from jet-wind interactions. An asymmetric, nuclear r similar to 2 pc dust structure with a high inferred molecular column density N(H-2) similar or equal to 1.8x10(24) cm(-2) is detected in continuum and also shows compact emission from vibrationally excited HCN. The nuclear dust emission is hot (T-d> 180 K) and its luminosity is likely powered by a buried AGN. The lopsided structure appears to be a warped disk, which is responsible for a significant part of the nuclear obscuration and possibly formed as a result of uneven gas inflows. The dynamical mass inside r=1.4 pc is estimated to 9(-3)(+2) x 10(6)M(circle dot) 9 - 3 + 2 x 10 6 M circle dot , implying that the supermassive black hole (SMBH) has a high mass with respect to the stellar velocity dispersion of NGC 1377. We suggest that the SMBH of NGC 1377 is currently in a state of moderate growth, at the end of a more intense phase of accretion and also evolving from a state of more extreme nuclear obscuration. The nuclear growth may be fuelled by low-angular momentum gas inflowing from the gas ejected in the molecular jet and wind. Such a feedback-loop of cyclic outflows and central accretion could explain why there is still a significant reservoir of molecular gas in this ageing, lenticular galaxy. A feedback-loop would be an effective process in growing the nuclear SMBH and thus would constitute an important phase in the evolution of NGC 1377. This also invites new questions as to SMBH growth processes in obscured, dusty galaxies.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
650 7a NATURVETENSKAPx Fysikx Atom- och molekylfysik och optik0 (SwePub)103022 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Atom and Molecular Physics and Optics0 (SwePub)103022 hsv//eng
650 7a NATURVETENSKAPx Fysikx Fusion, plasma och rymdfysik0 (SwePub)103032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Fusion, Plasma and Space Physics0 (SwePub)103032 hsv//eng
653 a galaxies: individual: NGC 1377
653 a ISM: jets and outflows
653 a galaxies: active
653 a ISM: molecules
653 a galaxies: evolution
653 a galaxies: nuclei
7001 a Falstad, Niklas,d 1987u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)falstad
7001 a Muller, Sebastien,d 1976u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)mullers
7001 a Wada, K.u Kagoshima University4 aut
7001 a Gallagher, J. S.u University of Wisconsin Madison4 aut
7001 a König, Sabine,d 1983u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)ksabine
7001 a Sakamoto, K.u Academia Sinica Taiwan4 aut
7001 a Vlemmings, Wouter,d 1974u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)wouterv
7001 a Ceccobello, Chiara,d 1984u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)chiarac
7001 a Dasyra, K.u University of Athens4 aut
7001 a Combes, F.u Sorbonne Université,Sorbonne University4 aut
7001 a Garcia-Burillo, S.u Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)4 aut
7001 a Oya, Y.u University of Tokyo, Japan4 aut
7001 a Martin, S.u Atacama Large Millimeter-submillimeter Array (ALMA),European Southern Observatory Santiago4 aut
7001 a van der Werf, P.u Universiteit Leiden (UL),Leiden University (UL)4 aut
7001 a Evans, A. S.u University of Virginia,National Radio Astronomy Observatory4 aut
7001 a Kotilainen, J.u Turun Yliopisto,University of Turku4 aut
7102 a Chalmers tekniska högskolab Kagoshima University4 org
7730 t Astronomy and Astrophysicsd : EDP Sciencesg 640q 640x 0004-6361x 1432-0746
8564 u https://research.chalmers.se/publication/519637/file/519637_Fulltext.pdfx primaryx freey FULLTEXT
8564 u http://arxiv.org/pdf/2007.07824
8564 8u https://research.chalmers.se/publication/519178
8564 8u https://doi.org/10.1051/0004-6361/202038282
8564 8u https://research.chalmers.se/publication/519637

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy