Back to Search
Start Over
The kinematical properties of superbubbles and H ii regions of the Large Magellanic Cloud derived from the 3D Hα Survey
- Source :
- Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 457 (2), pp.2048--2067. ⟨10.1093/mnras/stw054⟩, Monthly Notices of the Royal Astronomical Society, 2016, 457 (2), pp.2048--2067. ⟨10.1093/mnras/stw054⟩
- Publication Year :
- 2016
- Publisher :
- Oxford University Press (OUP), 2016.
-
Abstract
- International audience; We report the results of a kinematical H alpha survey of the Large Magellanic Cloud (LMC) presented in the form of a kinematical and photometric catalogue of 210 H ii regions. The observations have been obtained with a scanning Fabry-Perot interferometer that produced data cubes corresponding to 66 different pointings over this galaxy, each with a field of view of 38 arcmin, covering almost the whole extent of the LMC. We find a bimodal distribution of the H alpha luminosity of LMC H ii regions. We also derive the local star formation and star formation rate (SFR) per unit area of the nebulae, concluding that star formation in the LMC has proceeded until the present time at an average rate of roughly 0.11 M-aS (TM) yr(-1). Also, we do not find any correlation between the SFR or I (SFR) pound with Delta V (full width at half-maximum for a single Gaussian profile and the difference in velocities for multiple-components velocity profiles), the diameter, the distance to the kinematical centre of the LMC and age of the nebulae. Over most of the LMC Delta V appears to be of the order of 30 km s(-1). However, in a few regions the Delta V of the velocity profiles is as large as 50-100 kms(-1), corresponding to identified supernova remnants and superbubbles undergoing expansion motions.
- Subjects :
- Physics
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
010308 nuclear & particles physics
Star formation
Astrophysics::High Energy Astrophysical Phenomena
Astronomy
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
01 natural sciences
Full width
Galaxy
Luminosity
Delta-v (physics)
Supernova
Space and Planetary Science
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
H-alpha
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Large Magellanic Cloud
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Subjects
Details
- ISSN :
- 13652966 and 00358711
- Volume :
- 457
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Accession number :
- edsair.doi.dedup.....0645a72541927f31baa70450dde97e60