Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

The Galaxy Stellar Mass Function and Low Surface Brightness Galaxies from Core-Collapse Supernovae

Sedgwick, TM, Baldry, IK, James, PA and Kelvin, LS The Galaxy Stellar Mass Function and Low Surface Brightness Galaxies from Core-Collapse Supernovae. Monthly Notices of the Royal Astronomical Society. ISSN 0035-8711 (Accepted)

[img]
Preview
Text
1901.05020v1.pdf - Accepted Version

Download (8MB) | Preview

Abstract

We introduce a method for producing a galaxy sample unbiased by surface brightness and stellar mass, by selecting star-forming galaxies via the positions of core-collapse supernovae (CCSNe). Whilst matching $\sim$2400 supernovae from the SDSS-II Supernova Survey to their host galaxies using IAC Stripe 82 legacy coadded imaging, we find $\sim$150 previously unidentified low surface brightness galaxies (LSBGs). Using a sub-sample of $\sim$900 CCSNe, we infer CCSN-rate and star-formation rate densities as a function of galaxy stellar mass, and the star-forming galaxy stellar mass function. Resultant star-forming galaxy number densities are found to increase following a power-law down to our low mass limit of $\sim10^{6.4}$ M$_{\odot}$ by a single Schechter function with a faint-end slope of $\alpha = -1.41$. Number densities are consistent with those found by the EAGLE simulations invoking a $\Lambda$-CDM cosmology. Overcoming surface brightness and stellar mass biases is important for assessment of the sub-structure problem. In order to estimate galaxy stellar masses, a new code for the calculation of galaxy photometric redshifts, zMedIC, is also presented, and shown to be particularly useful for small samples of galaxies.

Item Type: Article
Additional Information: This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Thomas M Sedgwick, Ivan K Baldry, Philip A James, Lee S Kelvin; The Galaxy Stellar Mass Function and Low Surface Brightness Galaxies from Core-Collapse Supernovae, Monthly Notices of the Royal Astronomical Society, , stz186, is available online at: https://doi.org/10.1093/mnras/stz186
Uncontrolled Keywords: astro-ph.GA; astro-ph.GA; astro-ph.CO
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: Oxford University Press
Related URLs:
Date Deposited: 21 Jan 2019 11:28
Last Modified: 21 Jan 2019 11:37
DOI or Identification number: 10.1093/mnras/stz186
URI: http://researchonline.ljmu.ac.uk/id/eprint/9976

Actions (login required)

View Item View Item