000078103 001__ 78103
000078103 005__ 20200117221657.0
000078103 0247_ $$2doi$$a10.1051/0004-6361/201732543
000078103 0248_ $$2sideral$$a105351
000078103 037__ $$aART-2018-105351
000078103 041__ $$aeng
000078103 100__ $$aRamírez-Olivencia, N.
000078103 245__ $$aSub-arcsecond imaging of Arp 299-A at 150 MHz with LOFAR: Evidence for a starburst-driven outflow
000078103 260__ $$c2018
000078103 5060_ $$aAccess copy available to the general public$$fUnrestricted
000078103 5203_ $$aWe report on the first sub-arcsecond (0.44 × 0.41 arcsec2) angular resolution image at 150 MHz of the A-nucleus in the luminous infrared galaxy Arp 299, from International Low Frequency Array (LOFAR) Telescope observations. The most remarkable finding is that of an intriguing two-sided, filamentary structure emanating from the A-nucleus, which we interpret as an outflow that extends up to at least 14 arcsec from the A-nucleus in the N-S direction (˜5 kpc deprojected size) and accounts for almost 40% of the extended emission of the entire galaxy system. We also discuss HST/NICMOS [FeII] 1.64 µm and H2 2.12 µm images of Arp 299-A, which show similar features to those unveiled by our 150 MHz LOFAR observations, providing strong morphological support for the outflow scenario. Finally, we discuss unpublished Na I D spectra that confirm the outflow nature of this structure. From energetic arguments, we rule out the low-luminosity active galactic nucleus in Arp 299-A as a driver for the outflow. On the contrary, the powerful, compact starburst in the central regions of Arp 299-A provides plenty of mechanical energy to sustain an outflow, and we conclude that the intense supernova (SN) activity in the nuclear region of Arp 299-A is driving the observed outflow. We estimate that the starburst wind can support a mass-outflow rate in the range (11-63 M¿ yr-1) at speeds of up to 370-890 km s-1, and is relatively young, with an estimated kinematic age of 3-7 Myr. Those results open an avenue to the use of low-frequency (150 MHz), sub-arcsecond imaging with LOFAR to detect outflows in the central regions of local luminous infrared galaxies.
000078103 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000078103 590__ $$a6.209$$b2018
000078103 591__ $$aASTRONOMY & ASTROPHYSICS$$b10 / 69 = 0.145$$c2018$$dQ1$$eT1
000078103 592__ $$a2.527$$b2018
000078103 593__ $$aSpace and Planetary Science$$c2018$$dQ1
000078103 593__ $$aAstronomy and Astrophysics$$c2018$$dQ1
000078103 655_4 $$ainfo:eu-repo/semantics/other$$vinfo:eu-repo/semantics/publishedVersion
000078103 700__ $$aVarenius, E.
000078103 700__ $$0(orcid)0000-0001-5654-0266$$aPérez-Torres, M.$$uUniversidad de Zaragoza
000078103 700__ $$aAlberdi, A.
000078103 700__ $$aPérez, E.
000078103 700__ $$aAlonso-Herrero, A.
000078103 700__ $$aDeller, A.
000078103 700__ $$aHerrero-Illana, R.
000078103 700__ $$aMoldón, J.
000078103 700__ $$aBarcos-Muñoz, L.
000078103 700__ $$aMartí-Vidal, I.
000078103 7102_ $$12004$$2405$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Teórica
000078103 773__ $$g610 (2018), L18 [7 pp]$$pAstron. astrophys.$$tAstronomy & astrophysics$$x0004-6361
000078103 8564_ $$s292357$$uhttps://zaguan.unizar.es/record/78103/files/texto_completo.pdf$$yVersión publicada
000078103 8564_ $$s123883$$uhttps://zaguan.unizar.es/record/78103/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000078103 909CO $$ooai:zaguan.unizar.es:78103$$particulos$$pdriver
000078103 951__ $$a2020-01-17-22:11:59
000078103 980__ $$aARTICLE