Quadruple-peaked spectral line profiles as a tool to constrain gravitational potential of shell galaxies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10129335" target="_blank" >RIV/00216208:11320/12:10129335 - isvavai.cz</a>

Alternative codes found

RIV/67985815:_____/12:00387366 RIV/00216224:14310/12:00057988

Result on the web

<a href="http://dx.doi.org/10.1051/0004-6361/201219940" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201219940</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201219940" target="_blank" >10.1051/0004-6361/201219940</a>

Result language

angličtina

Original language name

Quadruple-peaked spectral line profiles as a tool to constrain gravitational potential of shell galaxies

Original language description

Context: Stellar shells observed in many giant elliptical and lenticular as well as a few spiral and dwarf galaxies presumably result from galaxy mergers. Line-of-sight velocity distributions of the shells could, in principle, if measured with a sufficiently high signal-to-noise ratio, constitute a method to constrain the gravitational potential of the host galaxy. Aims. Merrifield & Kuijken (1998, MNRAS, 297, 1292) predicted a double-peaked line profile for stationary shells resulting from a nearly radial minor merger. In this paper, we aim at extending their analysis to a more realistic case of expanding shells, inherent to the merging process, whereas we assume the same type of merger and the same orbital geometry. Methods. We used an analytical approach as well as test particle simulations to predict the line-of-sight velocity profile across the shell structure. Simulated line profiles were convolved with spectral PSFs to estimate peak detectability. Results. The resulting line-of-

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2012

Confidentiality

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

Name of the periodical

Astronomy and Astrophysics

ISSN

0004-6361

e-ISSN

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Volume of the periodical

545

Issue of the periodical within the volume

září

Country of publishing house

DE - GERMANY

Number of pages

15

Pages from-to

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UT code for WoS article

000309254900033

EID of the result in the Scopus database

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