Počet záznamů: 1
ALMA reveals optically thin, highly excited CO gas in the jet-driven winds of the galaxy IC 5063
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SYSNO ASEP 0540088 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název ALMA reveals optically thin, highly excited CO gas in the jet-driven winds of the galaxy IC 5063 Tvůrce(i) Dasyra, K. M. (GR) Celkový počet autorů 7 Číslo článku L7 Zdroj.dok. Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 595, November (2016)Poč.str. 4 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova jets and outflows ; kinematics and dynamics ; ISM molecules Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) Výzkumná infrastruktura EU-ARC.CZ - 90067 - Astronomický ústav AV ČR, v. v. i. Způsob publikování Open access UT WOS 000388573500142 EID SCOPUS 84994651587 DOI 10.1051/0004-6361/201629689 Anotace Using CO (4-3) and (2-1) Atacama Large Millimeter Array (ALMA) data, we prove that the molecular gas in the jet-driven winds of the galaxy IC 5063 is more highly excited than the rest of the molecular gas in the disk of the same galaxy. On average, the CO(4-3)/CO(2-1) flux ratio is 1 for the disk and 5 for the jet accelerated or impacted gas. Spatially-resolved maps reveal that in regions associated with winds, the CO(4-3)/CO(2-1) flux ratio significantly exceeds the upper limit of 4 for optically thick gas. It frequently takes values between 5 and 11, and it occasionally further approaches the upper limit of 16 for optically thin gas. Excitation temperatures of 30 100K are common for the molecules in these regions. If all of the outflowing molecular gas is optically thin, at 30-50 K, then its mass is 2 x 10(6) M-circle dot. This lower mass limit is an order of magnitude below the mass derived from the CO(2-1) flux in the case of optically thick gas. Molecular winds can thus be less massive, but more easily detectable at high z than they were previously thought to be. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2021 Elektronická adresa https://doi.org/10.1051/0004-6361/201629689
Počet záznamů: 1