| dc.contributor.advisor |
Arbutina, Bojan |
|
| dc.contributor.author |
Vučetić, Milica |
|
| dc.date.accessioned |
2017-10-31T14:08:45Z |
|
| dc.date.available |
2017-10-31T14:08:45Z |
|
| dc.date.issued |
2017 |
|
| dc.identifier.uri |
http://hdl.handle.net/123456789/4507 |
|
| dc.description.abstract |
In this dissertation we discuss in
uence of H emission from supernova remnants
(SNRs) on H derived star formation rates (SFRs). We present the detection of 16
optical SNR candidates in a part of nearby spiral galaxy IC342, and two more poten-
tial SNRs in NGC 185 galaxy. The candidates were detected by applying [S ii]/H
ratio criterion on observations made with the 2 m telescope at Rozhen National
Astronomical Observatory in Bulgaria. Also, in this dissertation we present the
most up-to-date list of nearby galaxies with optically detected SNRs. When deri-
ving H star formation rates, assumption is that the radiation is coming from the
ionized gas surrounding hot and young stars { Hii regions. In this case, emission
from SNRs contaminates H
ux used to derive SFR. We found that the contribu-
tion of SNRs'
ux to the total H
ux, for 18 galaxies in our sample of galaxies
with optical SNRs, is 5 5%. Due to the observational selection effects, the SNR
contamination of SFRs derived herein represents only a lower limit. M83 is the
galaxy with the most detected optical SNRs and in this galaxy SNRs account for
9 per cent of the total H emission. We expect that fraction similar to this would
be close to the real contribution of SNR emission to the total H emission in spiral
galaxies.
Using two dwarf galaxies as an example, Holmberg IX and NGC 185, we show
that the contamination of H
ux by SNRs, or other sources, can be much larger,
up to ten times higher than total H
ux coming from Hii regions of the observed
galaxy. |
en_US |
| dc.description.provenance |
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No. of bitstreams: 1
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en |
| dc.description.provenance |
Made available in DSpace on 2017-10-31T14:08:45Z (GMT). No. of bitstreams: 1
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Previous issue date: 2017 |
en |
| dc.language.iso |
sr |
en_US |
| dc.publisher |
Beograd |
en_US |
| dc.title |
OPTIČKA DETEKCIJA OSTATAKA SUPERNOVIH I UTICAJ NJIHOVE EMISIJE U LINIJI H(alfa) NA ODREĐIVANJE STOPE FORMIRANJA ZVEZDA |
en_US |
| mf.author.birth-date |
1985-09-09 |
|
| mf.author.birth-place |
Beograd |
en_US |
| mf.author.birth-country |
Srbija |
en_US |
| mf.author.residence-state |
Srbija |
en_US |
| mf.author.citizenship |
Srpsko |
en_US |
| mf.author.nationality |
Srpkinja |
en_US |
| mf.subject.area |
Astronomy |
en_US |
| mf.subject.keywords |
stars: formation { ISM: supernova remnants { galaxies: ISM { galaxies: star formation { galaxies: individual (IC342, NGC 185, Holmberg IX). |
en_US |
| mf.subject.subarea |
Astrophysics |
en_US |
| mf.contributor.committee |
Urošević, Dejan |
|
| mf.contributor.committee |
Ćirković, Milan |
|
| mf.university.faculty |
Mathematical Faculty |
en_US |
| mf.document.pages |
159 |
en_US |
| mf.document.location |
Beograd |
en_US |
| mf.document.genealogy-project |
No |
en_US |
| mf.university |
Belgrade University |
en_US |