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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 04204naa a2200421 4500 | |
| 001 | oai:DiVA.org:su-211066 | |
| 003 | SwePub | |
| 008 | 221110s2022 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2110662 URI |
| 024 | 7 | a https://doi.org/10.1051/0004-6361/2022437392 DOI |
| 040 | a (SwePub)su | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Bik, Arjanu Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)abik |
| 245 | 1 0 | a Spatially resolved gas and stellar kinematics in compact starburst galaxies |
| 264 | c 2022-10-21 | |
| 264 | 1 | b EDP Sciences,c 2022 |
| 338 | a print2 rdacarrier | |
| 520 | a Context. The kinematics of galaxies provide valuable insights into their physics and assembly history. Kinematics are governed not only by the gravitational potential, but also by merger events and stellar feedback processes such as stellar winds and supernova explosions.Aims. We aim to identify what governs the kinematics in a sample of SDSS-selected nearby starburst galaxies, by obtaining spatially resolved measurements of the gas and stellar kinematics.Methods. We obtained near-infrared integral-field K-band spectroscopy with VLT/SINFONI for 15 compact starburst galaxies. We derived the integrated as well as spatially resolved stellar and gas kinematics. The stellar kinematics were derived from the CO absorption bands, and Paα and Brγ emission lines were used for the gas kinematics.Results. Based on the integrated spectra, we find that the majority of galaxies have gas and stellar velocity dispersion that are comparable. A spatially resolved comparison shows that the six galaxies that deviate show evidence for a bulge or stellar feedback. Two galaxies are identified as mergers based on their double-peaked emission lines. In our sample, we find a negative correlation between the ratio of the rotational velocity over the velocity dispersion (vrot/σ) and the star formation rate surface density.Conclusions. We propose a scenario where the global kinematics of the galaxies are determined by gravitational instabilities that affect both the stars and gas. This process could be driven by mergers or accretion events. Effects of stellar feedback on the ionised gas are more localised and detected only in the spatially resolved analysis. The mass derived from the velocity dispersion provides a reliable mass even if the galaxy cannot be spatially resolved. The technique used in this paper is applicable to galaxies at low and high redshift with the next generation of infrared-focussed telescopes (JWST and ELT). | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 653 | a galaxies: kinematics and dynamics | |
| 653 | a galaxies: starburst | |
| 653 | a galaxies: ISM | |
| 653 | a infrared: galaxies | |
| 653 | a ISM: kinematics and dynamics | |
| 653 | a stars: kinematics and dynamics | |
| 700 | 1 | a Östlin, Göranu Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)ostlin |
| 700 | 1 | a Hayes, Matthewu Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)mhaye |
| 700 | 1 | a Melinder, Jens,d 1977-u Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)jeand |
| 700 | 1 | a Menacho, Veronica,d 1983-u Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)vmena |
| 710 | 2 | a Stockholms universitetb Institutionen för astronomi4 org |
| 773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 666q 666x 0004-6361x 1432-0746 |
| 856 | 4 | u https://doi.org/10.1051/0004-6361/202243739y Fulltext |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-211066 |
| 856 | 4 8 | u https://doi.org/10.1051/0004-6361/202243739 |
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