A spectroscopic view of stellar populations in bulges of low surface brightness galaxies .

Bibcode
2013MSAIS..25...29M
Morelli, L.; Corsini, E. M.; Pizzella, A.; Dalla Bontà, E. M.; Coccato, L.; Méndez-Abreu, J.; Cesetti, M.
Bibliographical reference

Memorie della Societa Astronomica Italiana Supplement, v.25, p.29 (2013)

Advertised on:
0
2013
Number of authors
7
IAC number of authors
1
Citations
1
Refereed citations
1
Description
We present the radial profiles of the age, metallicity and alpha /Fe enhancement of the stellar populations in the bulge-dominated region for a sample of eight spiral galaxies with a low surface-brightness stellar disc and a bulge. Almost all the sample bulges are characterized by a young stellar population, a solar alpha /Fe enhancement, and a metallicity spanning from high to sub-solar values. No significant gradient in age and alpha /Fe enhancement is measured, whereas a negative metallicity gradient is found only in a few cases. The stellar populations of the bulges hosted by low-surface-brightness discs result to share many properties with those of high surface-brightness galaxies. Therefore, they are likely to have common formation scenarios and evolution histories.
Type
Non-refereed
Galaxies

It may interest you

  • Non-refereed
    ROSALIA: ROman Sky Analyst for Low surface brightness Imaging & Astronomy
    Diffuse emission in the outskirts of galaxies, such as stellar tidal streams, galaxy stellar halos and intracluster light, provides important constraints on the structure and evolution of the Universe. However, such low surface brightness diffuse emission can be up to thousands of times dimmer (>29 AB mag/[square arcseconds]) than the sky
    Laine, Seppo et al.

    Advertised on:

    6
    2024
    Bibcode
    2024AAS...24412902L
    Citations
    0
  • Non-refereed
    A Systematic Search for and Characterization of White Dwarf Binaries Across the H-R Diagram
    White dwarfs (WDs) are the endpoint of evolution for 97% of stars. Most of these stars are in multiple systems, and a significant fraction of those are compact enough to exchange mass, altering the structures and subsequent evolution of both stars. The physical mechanisms that facilitate these mass exchanges include common envelope evolution, Roche
    Anguiano, Borja et al.

    Advertised on:

    6
    2024
    Bibcode
    2024AAS...24410807A
    Citations
    0
  • Non-refereed
    Deep HST Imaging Favors the Bulgeless Edge-on Galaxy Explanation for the Hypothetical Stellar Wake Created by a Runaway Supermassive Black Hole
    A long linear structure recently discovered could be the stellar wake produced by the passage of a runaway supermassive black hole (SMBH) or, alternatively, a bulgeless edge-on galaxy. We report on new very deep Hubble Space Telescope imaging that seems to be in tension with the SMBH runaway scenario but is consistent with the bulgeless edge-on
    Montes, Mireia et al.

    Advertised on:

    6
    2024
    Bibcode
    2024RNAAS...8..150M
    Citations
    0