Low surface brightness spiral galaxies. I - Neutral hydrogen content and location in the infrared Fisher-Tully diagram

AbstractStarbursts are finite periods of intense star formation (SF) that can dramatically impact the evolutionary state of a galaxy. Recent results suggest that starbursts in dwarf galaxies last longer and are distributed over more of the galaxy than previously thought, with star formation efficiencies (SFEs) comparable to spiral galaxies, much higher than those typical of non-bursting dwarfs. This difference might be explainable if the starburst mode is externally triggered by gravitational interactions with other nearby systems. We present new, sensitive neutral hydrogen observations of 18 starburst dwarf galaxies, which are part of the STARburst IRregular Dwarf Survey (STARBIRDS) and each were mapped with the Green Bank Telescope (GBT) and/or Parkes Telescope in order to study the low surface brightness gas distributions, a common tracer for tidal interactions.

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Kinematics and Neutral Hydrogen Properties of the Giant Low Surface Brightness Galaxy UGC 2936

The Astronomical Journal ◽

10.1086/300976 ◽

1999 ◽

Vol 118 (2) ◽

pp. 765-776 ◽

Cited By ~ 13

Author(s):

T. E. Pickering ◽

J. H. van Gorkom ◽

C. D. Impey ◽

A. C. Quillen

Keyword(s):

Surface Brightness ◽

Neutral Hydrogen ◽

Low Surface Brightness

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Rotating Halos and Heavy Disks: the Case of NGC 2915

Symposium - International Astronomical Union ◽

10.1017/s0074180900197384 ◽

2004 ◽

Vol 217 ◽

pp. 172-173

Author(s):

Frédéric S. Masset ◽

Martin Bureau

Keyword(s):

Surface Brightness ◽

Spiral Structure ◽

Dwarf Galaxy ◽

Neutral Hydrogen ◽

Dark Halo ◽

Pattern Frequency ◽

Spin Parameter ◽

Low Surface Brightness ◽

Hydrodynamical Simulations ◽

Blue Compact Dwarf Galaxy

NGC 2915 is a blue compact dwarf galaxy embedded in an extended, low surface brightness HI disk with a bar and two-armed spiral structure. Common mechanisms are unable to explain those patterns and disk dark matter or a rotating triaxial dark halo were proposed as alternatives. Hydrodynamical simulations were run for each case and compared to observations using customized column density and kinematic constraints. The spiral structure can be accounted for by an unseen bar or triaxial halo, but the large bar mass or halo pattern frequency required make it unlikely that the spiral is driven by an external perturber. In particular, the spin parameter lambda is much higher than predicted by current CDM structure formation scenarios. Massive disk models show that when the gas surface density is scaled up by a factor of about 10, the disk develops a spiral structure matching the observed one in perturbed density as well as velocity. This suggests that the disk of NGC 2915 contains much more mass than is visible tightly linked to the neutral hydrogen. A classic (quasi-)spherical halo is nevertheless still required, as increasing the disk mass further to fit the circular velocity curve would make the disk violently unstable

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The mass-to-light ratios of low surface brightness spiral galaxies: Clues from the Tully-Fisher relation

The Astrophysical Journal ◽

10.1086/175055 ◽

1995 ◽

Vol 438 ◽

pp. 72 ◽

Cited By ~ 58

Author(s):

D. Sprayberry ◽

G. M. Bernstein ◽

C. D. Impey ◽

G. D. Bothun

Keyword(s):

Surface Brightness ◽

Spiral Galaxies ◽

Low Surface Brightness ◽

Fisher Relation

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Northern dwarf and low surface brightness galaxies. II - The Green Bank neutral hydrogen survey

The Astrophysical Journal Supplement Series ◽

10.1086/191684 ◽

1992 ◽

Vol 81 ◽

pp. 5 ◽

Cited By ~ 57

Author(s):

Stephen E. Schneider ◽

Trinh X. Thuan ◽

Jeffrey G. Mangum ◽

John Miller

Keyword(s):

Surface Brightness ◽

Neutral Hydrogen ◽

Low Surface Brightness ◽

Low Surface Brightness Galaxies

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The Low Surface Brightness Galaxy HIPASS1126-72

International Astronomical Union Colloquium ◽

10.1017/s0252921100054324 ◽

1999 ◽

Vol 171 ◽

pp. 204-206

Author(s):

Virginia Kilborn ◽

Erwin de Blok ◽

Lister Staveley-Smith ◽

Rachel Webster

Keyword(s):

Surface Brightness ◽

Neutral Hydrogen ◽

Sky Survey ◽

Low Surface Brightness ◽

The Galaxy

AbstractThe low surface brightness galaxy HIPASS1126-72 was detected in the HI Parkes All Sky Survey (HIPASS). The galaxy was previously listed in the Southern Galaxy Catalogue under the name SGC1124.87221. This galaxy represents a class of galaxies that we will readily detect in the HIPASS survey, which have low surface brightness in the optical, but are easily detectable in neutral hydrogen.

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The σc — Vcirc correlation in high and low surface brightness galaxies

Symposium - International Astronomical Union ◽

10.1017/s0074180900183597 ◽

2004 ◽

Vol 220 ◽

pp. 339-340 ◽

Cited By ~ 1

Author(s):

A. Pizzella ◽

E. Dalla Bontà ◽

E. M. Corsini ◽

L. Coccato ◽

F. Bertola

Keyword(s):

Surface Brightness ◽

Velocity Dispersion ◽

Spiral Galaxies ◽

High Surface ◽

Linear Scale ◽

High Surface Brightness ◽

Circular Velocity ◽

Straight Line ◽

Low Surface Brightness ◽

Low Surface Brightness Galaxies

We investigate the relation between the central velocity dispersion, σc, and the circular velocity, Vcirc, in galaxies. in addition to previously obtained data, we consider an observationally homogeneus sample of 52 high surface brightness and 11 low surface brightness spiral galaxies. We performed a straight line regression analysis in a linear scale, finding a good fit, also for low σc galaxies, always rejected in the previous studies. Low surface brightness galaxies seem to behave differently, showing either higher values of Vcirc or lower values of σc with respect to their high surface brightness counterparts.

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The Space Density of Spiral Galaxies as function of their Luminosity, Surface Brightness and Scalesize

International Astronomical Union Colloquium ◽

10.1017/s0252921100054117 ◽

1999 ◽

Vol 171 ◽

pp. 52-59 ◽

Cited By ~ 2

Author(s):

Roelof S. de Jong ◽

Cedric Lacey

Keyword(s):

Surface Brightness ◽

Luminosity Function ◽

Spiral Galaxies ◽

Structural Parameters ◽

Space Density ◽

Cosmological Redshift ◽

Density Distributions ◽

Low Surface Brightness ◽

Local Space ◽

Log Normal

AbstractThe local space density of galaxies as a function of their basic structural parameters -like luminosity, surface brightness and scalesize-is still poorly known. Our poor knowledge is mainly the result of strong selection biases against low surface brightness and small scalesize galaxies in any optically selected sample. We show that in order to correct for selection biases one has to obtain accurate surface photometry and distance estimates for a large (≳ 1000) sample of galaxies. We derive bivariate space density distributions in the (scalesize, surface brightness)-plane and the (luminosity, scalesize)-plane for a sample of ~1000 local Sb-Sdm spiral galaxies. We present a parameterization of these bivariate distributions, based on a Schechter type luminosity function and a log-normal scalesize distribution at a given luminosity. We show how surface brightness limits and (1+z)4 cosmological redshift dimming can influence interpretation of luminosity function determinations and deep galaxy counts.

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