Star Formation in Low Surface Brightness Galaxies

2019 ◽  
Vol 131 (1006) ◽  
pp. 127001
Author(s):  
Feng-Jie Lei
Keyword(s):  
Star Formation ◽  
Surface Brightness ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

scholarly journals Molecular Gas and Star-formation in Low Surface Brightness Galaxies

2017 ◽  
Vol 154 (3) ◽  
pp. 116 ◽  
Author(s):  
Tian-Wen Cao ◽  
Hong Wu ◽  
Wei Du ◽  
Feng-Jie Lei ◽  
Ming Zhu ◽  
...  
Keyword(s):  
Star Formation ◽  
Surface Brightness ◽  
Molecular Gas ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

scholarly journals Radio Observations of AGN in Low Surface Brightness Galaxies

2007 ◽  
Vol 3 (S244) ◽  
pp. 352-353
Author(s):  
M. Das ◽  
S. S. McGaugh ◽  
N. Kantharia ◽  
S. N. Vogel
Keyword(s):  
Star Formation ◽  
Surface Brightness ◽  
Low Frequency ◽  
Radio Continuum ◽  
Continuum Emission ◽  
Preliminary Results ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies ◽  
Lsb Galaxies ◽  
Extended Emission

AbstractWe present preliminary results of a study of the low frequency radio continuum emission from the nuclei of Giant Low Surface Brightness (LSB) galaxies. We have mapped the emission and searched for extended features such as radio lobes/jets associated with AGN activity. LSB galaxies are poor in star formation and generally less evolved compared to nearby bright spirals. This paper presents low frequency observations of 3 galaxies; PGC 045080 at 1.4 GHz, 610 MHz, 325MHz, UGC 1922 at 610 MHz and UGC 6614 at 610 MHz. The observations were done with the GMRT. Radio cores as well as extended structures were detected and mapped in all three galaxies; the extended emission may be assocated with jets/lobes associated with AGN activity. Our results indicate that although these galaxies are optically dim, their nuclei can host AGN that are bright in the radio domain.

scholarly journals Star formation thresholds in Low Surface Brightness galaxies

1993 ◽  
Vol 106 ◽  
pp. 548 ◽  
Author(s):  
J. M. van der Hulst ◽  
E. D. Skillman ◽  
T. R. Smith ◽  
G. D. Bothun ◽  
S. S. McGaugh ◽  
...  
Keyword(s):  
Star Formation ◽  
Surface Brightness ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

scholarly journals The star formation histories of Low Surface Brightness galaxies

1999 ◽  
Vol 171 ◽  
pp. 245-252
Author(s):  
E.F. Bell ◽  
R.G. Bower ◽  
R.S. de Jong ◽  
B.J. Rauscher ◽  
D. Barnaby ◽  
...  
Keyword(s):  
Star Formation ◽  
Surface Brightness ◽  
Near Infrared ◽  
Large Range ◽  
Optical Data ◽  
Disk Galaxies ◽  
Infrared Images ◽  
Low Surface Brightness ◽  
Star Formation Histories ◽  
Low Surface Brightness Galaxies

AbstractNear-infrared images of a sample of red, blue and giant low surface brightness disk galaxies (LSBGs) were combined with optical data with the aim of constraining their star formation histories. Most LSBGs have strong colour gradients consistent with mean stellar age gradients. We find that LSBGs have a large range of ages and metallicities, spanning those observed in normal disk galaxies. In particular, red and blue LSBGs have very different star formation histories and represent two independent routes to low B band surface brightness. Blue LSBGs are well described by models with low, roughly constant star formation rates, whereas red LSBGs are better described by a ‘faded disk’ scenario.

scholarly journals The origin of low-surface-brightness galaxies in the dwarf regime

2021 ◽  
Vol 502 (3) ◽  
pp. 4262-4276
Author(s):  
R A Jackson ◽  
G Martin ◽  
S Kaviraj ◽  
M Ramsøy ◽  
J E G Devriendt ◽  
...  
Keyword(s):  
Star Formation ◽  
Surface Brightness ◽  
High Surface ◽  
Stellar Mass ◽  
Current Data ◽  
Sloan Digital Sky Survey ◽  
Data Sets ◽  
Low Surface Brightness ◽  
Gas Accretion ◽  
Low Surface Brightness Galaxies

ABSTRACT Low-surface-brightness galaxies (LSBGs) – defined as systems that are fainter than the surface-brightness limits of past wide-area surveys – form the overwhelming majority of galaxies in the dwarf regime (M⋆ < 109 M⊙). Using NewHorizon, a high-resolution cosmological simulation, we study the origin of LSBGs and explain why LSBGs at similar stellar mass show the large observed spread in surface brightness. NewHorizon galaxies populate a well-defined locus in the surface brightness–stellar mass plane, with a spread of ∼3 mag arcsec−2, in agreement with deep Sloan Digital Sky Survey (SDSS) Stripe 82 data. Galaxies with fainter surface brightnesses today are born in regions of higher dark matter density. This results in faster gas accretion and more intense star formation at early epochs. The stronger resultant supernova feedback flattens gas profiles at a faster rate, which, in turn, creates shallower stellar profiles (i.e. more diffuse systems) more rapidly. As star formation declines towards late epochs ( z < 1), the larger tidal perturbations and ram pressure experienced by these systems (due to their denser local environments) accelerate the divergence in surface brightness, by increasing their effective radii and reducing star formation, respectively. A small minority of dwarfs depart from the main locus towards high surface brightnesses, making them detectable in past wide surveys (e.g. standard-depth SDSS images). These systems have anomalously high star formation rates, triggered by recent fly-by or merger-driven starbursts. We note that objects considered extreme or anomalous at the depth of current data sets, e.g. ‘ultra-diffuse galaxies’, actually dominate the predicted dwarf population and will be routinely visible in future surveys like the Legacy Survey of Space and Time (LSST).

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