ALMA observation of the disruption of molecular gas in M87

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00102566" target="_blank" >RIV/00216224:14310/18:00102566 - isvavai.cz</a>

Výsledek na webu

<a href="https://arxiv.org/pdf/1801.01264.pdf" target="_blank" >https://arxiv.org/pdf/1801.01264.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/sty047" target="_blank" >10.1093/mnras/sty047</a>

Jazyk výsledku

angličtina

Název v původním jazyce

ALMA observation of the disruption of molecular gas in M87

Popis výsledku v původním jazyce

We present the results from Atacama Large Millimeter Array (ALMA) observations centred 40 arcsec (3 kpc in projection) south-east of the nucleus of M87. We report the detection of extended CO (2-1) line emission with a total flux of (5.5 +/- 0.6) x 10(-18) erg s(-1) cm(-2) and corresponding molecular gas mass M-H2 (4.7 +/- 0.4) x 10(5) M-circle dot, assuming a Galactic CO to H-2 conversion factor. ALMA data indicate a line-of-sight velocity of -129 +/- 3 km s(-1), in good agreement with measurements based on the [C-II] and H alpha+[N-II] lines, and a velocity dispersion of sigma = 27 +/- 3 km s(-1). The CO (2-1) emission originates only outside the radio lobe of the active galactic nucleus (AGN) seen in the 6 cm Very Large Array image, while the filament prolongs further inwards at other wavelengths. The molecular gas in M87 appears to be destroyed or excited by AGN activity, either by direct interaction with the radio plasma, or by the shock driven by the lobe into the X-ray emitting atmosphere. This is an important piece of the puzzle in understanding the impact of the central AGN on the amount of the coldest gas from which star formation can proceed.

Název v anglickém jazyce

ALMA observation of the disruption of molecular gas in M87

Popis výsledku anglicky

We present the results from Atacama Large Millimeter Array (ALMA) observations centred 40 arcsec (3 kpc in projection) south-east of the nucleus of M87. We report the detection of extended CO (2-1) line emission with a total flux of (5.5 +/- 0.6) x 10(-18) erg s(-1) cm(-2) and corresponding molecular gas mass M-H2 (4.7 +/- 0.4) x 10(5) M-circle dot, assuming a Galactic CO to H-2 conversion factor. ALMA data indicate a line-of-sight velocity of -129 +/- 3 km s(-1), in good agreement with measurements based on the [C-II] and H alpha+[N-II] lines, and a velocity dispersion of sigma = 27 +/- 3 km s(-1). The CO (2-1) emission originates only outside the radio lobe of the active galactic nucleus (AGN) seen in the 6 cm Very Large Array image, while the filament prolongs further inwards at other wavelengths. The molecular gas in M87 appears to be destroyed or excited by AGN activity, either by direct interaction with the radio plasma, or by the shock driven by the lobe into the X-ray emitting atmosphere. This is an important piece of the puzzle in understanding the impact of the central AGN on the amount of the coldest gas from which star formation can proceed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

—

Svazek periodika

475

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

3004-3009

Kód UT WoS článku

000427141900010

EID výsledku v databázi Scopus

2-s2.0-85044749960