Galaxy And Mass Assembly (GAMA): blue spheroids within 87 Mpc. Issue 1 (12th December 2017)
- Record Type:
- Journal Article
- Title:
- Galaxy And Mass Assembly (GAMA): blue spheroids within 87 Mpc. Issue 1 (12th December 2017)
- Main Title:
- Galaxy And Mass Assembly (GAMA): blue spheroids within 87 Mpc
- Authors:
- Mahajan, Smriti
Drinkwater, Michael J
Driver, S
Hopkins, A M
Graham, Alister W
Brough, S
Brown, Michael J I
Holwerda, B W
Owers, Matt S
Pimbblet, Kevin A - Abstract:
- Abstract: In this paper, we test if nearby blue spheroid (BSph) galaxies may become the progenitors of star-forming spiral galaxies or passively evolving elliptical galaxies. Our sample comprises 428 galaxies of various morphologies in the redshift range 0.002 < z < 0.02 (8–87 Mpc) with panchromatic data from the Galaxy and Mass Assembly survey. We find that BSph galaxies are structurally (mean effective surface brightness, effective radius) very similar to their passively evolving red counterparts. However, their star formation and other properties such as colour, age, and metallicity are more like star-forming spirals than spheroids (ellipticals and lenticulars). We show that BSph galaxies are statistically distinguishable from other spheroids as well as spirals in the multidimensional space mapped by luminosity-weighted age, metallicity, dust mass, and specific star formation rate. We use H i data to reveal that some of the BSphs are (further) developing their discs, hence their blue colours. They may eventually become spiral galaxies – if sufficient gas accretion occurs – or more likely fade into low-mass red galaxies.
- Is Part Of:
- Monthly notices of the Royal Astronomical Society. Volume 475:Issue 1(2018)
- Journal:
- Monthly notices of the Royal Astronomical Society
- Issue:
- Volume 475:Issue 1(2018)
- Issue Display:
- Volume 475, Issue 1 (2018)
- Year:
- 2018
- Volume:
- 475
- Issue:
- 1
- Issue Sort Value:
- 2018-0475-0001-0000
- Page Start:
- 788
- Page End:
- 799
- Publication Date:
- 2017-12-12
- Subjects:
- galaxies: evolution -- galaxies: fundamental parameters -- galaxies: star formation -- galaxies: stellar content -- galaxies: structure
Astronomy -- Periodicals
Periodicals
520.5 - Journal URLs:
- http://mnras.oxfordjournals.org/ ↗
http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2966 ↗
http://www.blackwell-synergy.com/issuelist.asp?journal=mnr ↗
http://www.blackwell-synergy.com/loi/mnr ↗
http://ukcatalogue.oup.com/ ↗ - DOI:
- 10.1093/mnras/stx3202 ↗
- Languages:
- English
- ISSNs:
- 0035-8711
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 5943.000000
British Library DSC - BLDSS-3PM
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- 12179.xml