We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Compact Galaxies with Active Star Formation from the SDSS Data Release 16: Star-Formation Rates Based on the Luminosities of Forbidden Emission Lines in the Optical Range.
- Authors
Izotova, I. Y.; Izotov, Y. I.
- Abstract
We obtained equations for determining the star-formation rate in local compact star-forming galaxies from the SDSS Data Release 16 using luminosities of the forbidden emission lines [O II] λ 372.7 nm, [Ne III] λ 386.8 nm, [O III] λ 495.9 nm, and [O III] λ 500.7 nm and their combinations. The equations are based on the assumption that the star-formation rates, determined from the luminosity of the forbidden lines and Hβ emission lines, are equal. This approach is especially useful because the observation of Hβ emission is not always possible. For example, in galaxies with redshift z > 1, this line goes beyond the optical range, and the [O II] λ 372.7 nm line, the [Ne III] λ 386.8 nm line, or their combination can be used instead. On the other hand, in many studies of faint objects using low-resolution spectra, the Hβ line merges with the stronger [O III] λ 495.9 nm and [O III] λ 500.7 nm lines. In these cases, [O III] lines and their combination can be used to determine the rate of star formation. The resulting equations can be applied to compact star-forming galaxies in a wide range of redshifts.
- Subjects
STAR formation; ACTIVE galaxies; DATA release; LUMINOSITY; GALACTIC redshift; STELLAR luminosity function
- Publication
Kinematics & Physics of Celestial Bodies, 2023, Vol 39, Issue 1, p24
- ISSN
0884-5913
- Publication type
Article
- DOI
10.3103/S0884591323010038