Monitoring the Dusty S-cluster Object (DSO/G2) on its Orbit toward the Galactic Center Black Hole

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F15%3A00441745" target="_blank" >RIV/67985815:_____/15:00441745 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/0004-637X/800/2/125" target="_blank" >http://dx.doi.org/10.1088/0004-637X/800/2/125</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0004-637X/800/2/125" target="_blank" >10.1088/0004-637X/800/2/125</a>

Result language

angličtina

Original language name

Monitoring the Dusty S-cluster Object (DSO/G2) on its Orbit toward the Galactic Center Black Hole

Original language description

We analyze and report in detail new near-infrared (1.45-2.45 ?m) observations of the Dusty S-cluster Object (DSO/G2) during its approach to the black hole at the center of the Galaxy that were carried out with the ESO Very Large Telescope/SINFONI between2014 February and September. Before 2014 May we detect spatially compact Br? and Pa? line emission from the DSO at about 40 mas east of Sgr A*. The velocity of the source, measured from the redshifted emission, is 2700 60 km s?1. No blueshifted emissionabove the noise level is detected at the position of Sgr A* or upstream of the presumed orbit. We do not detect any significant extension of the velocity gradient across the source. We find a Br? line FWHM of 50 10 ? before and 15 10 ? after the peribothron transit, i.e., no significant line broadening with respect to last year is observed. Br? line maps show that the bulk of the line emission originates from a region of less than 20 mas diameter. This is consistent with a very compact

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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Project

<a href="/en/project/GC13-00070J" target="_blank" >GC13-00070J: Accretion process in strong gravity of Galactic Center</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

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

Name of the periodical

Astrophysical Journal

ISSN

0004-637X

e-ISSN

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Volume of the periodical

800

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

21

Pages from-to

"125/1"-"125/21"

UT code for WoS article

000349782500048

EID of the result in the Scopus database

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