A study of low surface brightness spiral galaxies. II Optical surface photometry, infrared photometry, and H II region spectrophotometry

1983 ◽  
Vol 53 ◽  
pp. 105 ◽  
Author(s):  
W. Romanishin ◽  
K. M. Strom ◽  
S. E. Strom
Keyword(s):  
Surface Brightness ◽  
Spiral Galaxies ◽  
Surface Photometry ◽  
Infrared Photometry ◽  
Optical Surface ◽  
Low Surface Brightness ◽  
H Ii Region

scholarly journals Bar Properties as a Function of Hubble Type

1996 ◽  
Vol 157 ◽  
pp. 23-29
Author(s):  
Debra Meloy Elmegreen
Keyword(s):  
Surface Brightness ◽  
Near Infrared ◽  
Spiral Galaxies ◽  
Infrared Light ◽  
Surface Photometry ◽  
Optical Surface ◽  
Barred Galaxies ◽  
Additional Information ◽  
Grand Design ◽  
Barred Spiral Galaxies

AbstractPrevious optical surface photometry of barred spiral galaxies revealed that there are two distinct types of bars: large bars tend to have a nearly constant surface brightness (”flat“ bar), while smaller bars tend to have a decreasing surface brightness with a scale length similar to the disk (”exponential“ bar). Statistically, flat bars tend to occur in early Hubble types and exponential bars in later types. Studies of resonances in spirals indicate that flat bars end inside corotation, while exponential bars end between the inner Lindblad and 4:1 resonances. Near-infrared (JHK) surface photometry of bars is presented in order to compare the stellar distributions and bar potentials in flat and exponential barred galaxies. The presence of isophotal twists in some galaxies provides additional information on resonances. The grand design and fiocculent optical structures in the two types of barred galaxies will be compared and contrasted with their near-infrared light distributions.

The Hi Neighborhoods Around STARBIRDS

2018 ◽  
Vol 14 (S344) ◽  
pp. 280-282
Author(s):  
Megan C. Johnson ◽  
Kristen B. W. McQuinn ◽  
John Cannon ◽  
Charlotte Martinkus ◽  
Evan Skillman ◽  
...  
Keyword(s):  
Star Formation ◽  
Surface Brightness ◽  
Spiral Galaxies ◽  
Dwarf Galaxies ◽  
Neutral Hydrogen ◽  
Tidal Interactions ◽  
Low Surface Brightness ◽  
The Galaxy ◽  
Green Bank Telescope ◽  
Intense Star Formation

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.

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

1995 ◽  
Vol 438 ◽  
pp. 72 ◽  
Author(s):  
D. Sprayberry ◽  
G. M. Bernstein ◽  
C. D. Impey ◽  
G. D. Bothun
Keyword(s):  
Surface Brightness ◽  
Spiral Galaxies ◽  
Low Surface Brightness ◽  
Fisher Relation

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

2004 ◽  
Vol 220 ◽  
pp. 339-340 ◽  
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.

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

1999 ◽  
Vol 171 ◽  
pp. 52-59 ◽  
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.

scholarly journals Surface Photometry of Low-Surface-Brightness Galaxies in the Area of the NGC 972 Group of Galaxies

1994 ◽  
Vol 161 ◽  
pp. 553-555
Author(s):  
J. Vennik ◽  
G.M. Richter
Keyword(s):  
Surface Brightness ◽  
Surface Photometry ◽  
Schmidt Telescope ◽  
Dwarf Spheroidal Galaxies ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies ◽  
Spheroidal Galaxies

A nearby group of galaxies, centred on NGC 972 and conspicuously rich in faint dwarf spheroidal galaxies, has been investigated photometrically on B and V plates obtained with the Tautenburg 2m Schmidt telescope. For six low surface brightness galaxies, the equivalent B- and V-brightness profiles have been extracted, and asymptotic magnitudes and mean colours have been estimated. Their equivalent profiles are well fitted by modified isothermal (King) models.

scholarly journals Detections of CO in Late-Type, Low Surface Brightness Spiral Galaxies

2005 ◽  
Vol 129 (4) ◽  
pp. 1849-1862 ◽  
Author(s):  
Lynn D. Matthews ◽  
Yu Gao ◽  
Juan M. Uson ◽  
Françoise Combes
Keyword(s):  
Surface Brightness ◽  
Spiral Galaxies ◽  
Late Type ◽  
Low Surface Brightness

Low surface brightness galaxies in the Fornax Cluster: automated galaxy surface photometry - III

1988 ◽  
Vol 232 (2) ◽  
pp. 239-258 ◽  
Author(s):  
J. I. Davies ◽  
S. Phillipps ◽  
M. G. M. Cawson ◽  
M. J. Disney ◽  
E. J. Kibblewhite
Keyword(s):  
Surface Brightness ◽  
Surface Photometry ◽  
Low Surface Brightness ◽  
Fornax Cluster ◽  
Low Surface Brightness Galaxies

scholarly journals Morphology and Stellar Populations in the Gas-Rich, Giant LSBGs

1999 ◽  
Vol 171 ◽  
pp. 191-195 ◽  
Author(s):  
P. Knezek
Keyword(s):  
Entire Range ◽  
Surface Brightness ◽  
Spiral Galaxies ◽  
High Surface ◽  
Nuclear Spectroscopy ◽  
Nuclear Activity ◽  
High Surface Brightness ◽  
Low Surface Brightness ◽  
Show Evidence ◽  
Low Surface Brightness Galaxies

AbstractAn unexpected characteristic of low surface brightness galaxies (LSBGs) is that a significant number are massive and possess substantial amounts of atomic gas. We present preliminary results of an ongoing program to obtain BVRIJHK imaging, along with some nuclear spectroscopy, of a well-defined sample of LSBGs which are gas-rich and of similar size to giant, high surface brightness spiral galaxies (HSBGs). These LSBGs span the entire range of Hubble disk morphologies. While their disks are bluer, on average, than comparable HSBGs, the optical morphology of massive LSBGs indicates that many of these systems have undergone previous star formation episodes. They typically have long disk scale lengths, and range from MB = −16 to −22 (H0 = 75 km s−1 Mpc−1). About half of the LSBGs with bulges show evidence of nuclear activity, and ~30% appear to be barred. These massive, gas-rich LSBGs apparently have varied, and often complex, evolutionary histories.

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