RECORD
Segregation Effects According to the Evolutionary Stage of Galaxy Groups
Cosmology and Nongalactic Astrophysics · Submitted 22 Sep 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Our results indicate that galaxies in Gaussian groups are significantly more evolved than galaxies in non-relaxed systems out to distances of about 4R200, presenting signficantly redder (B-R) color.
The compiled record
The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
Open the compiled record
The abstract, sentence by sentence
We study segregation phenomena in 57 groups selected from the 2PIGG catalog of galaxy groups. The sample corresponds to those systems located in areas of at least 80% redshift coverage out to 10 times the radius of the groups. The dynamical state of the galaxy systems was determined after studying their velocity distributions. We have used the Anderson-Darling test to distinguish relaxed and non-relaxed systems. This analysis indicates that 84% of groups have galaxy velocities consistent with the normal distribution, while 16% of them have more complex underlying distributions. Properties of the member galaxies are investigated taking into account this classification. Our results indicate that galaxies in Gaussian groups are significantly more evolved than galaxies in non-relaxed systems out to distances of about 4R200, presenting signficantly redder (B-R) color. We also find evidence that galaxies with M_R < -21.5 in Gaussian groups are closer to the condition of energy equipartition.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We study segregation phenomena in 57 groups selected from the 2PIGG catalog of galaxy groups. | contribution 0.91 | 0.93 | 0.02 | asserted 0.93 |
| s1 | The sample corresponds to those systems located in areas of at least 80% redshift coverage out to 10 times the radius of the groups. | method 0.99 | 0.56 | 0.01 | asserted 0.99 |
| s2 | The dynamical state of the galaxy systems was determined after studying their velocity distributions. | method 0.99 | 0.94 | 0.02 | asserted 0.99 |
| s3 | We have used the Anderson-Darling test to distinguish relaxed and non-relaxed systems. | method 1.00 | 0.95 | 0.02 | asserted 0.98 |
| s4 | This analysis indicates that 84% of groups have galaxy velocities consistent with the normal distribution, while 16% of them have more complex underlying distributions. | result 1.00 | 0.95 | 0.07 | hedged possibility 0.68 |
| s5 | Properties of the member galaxies are investigated taking into account this classification. | method 0.61 | 0.71 | 0.03 | unclear 0.56 |
| s6 | Our results indicate that galaxies in Gaussian groups are significantly more evolved than galaxies in non-relaxed systems out to distances of about 4R200, presenting signficantly redder (B-R) color. | result 1.00 | 0.96 | 0.78 | asserted 0.80 |
| s7 | We also find evidence that galaxies with M_R < -21.5 in Gaussian groups are closer to the condition of energy equipartition. | result 0.98 | 0.94 | 0.11 | asserted 0.86 |
What was examined, and what was not
- arXiv listing abstract v1
- full text
- figures and tables
- references and citing sentences
- relations to other papers
- P abstract
- S sections
- T body sentences
- C citations
- R cross-paper relations
The paper
Original abstract
We study segregation phenomena in 57 groups selected from the 2PIGG catalog of galaxy groups. The sample corresponds to those systems located in areas of at least 80% redshift coverage out to 10 times the radius of the groups. The dynamical state of the galaxy systems was determined after studying their velocity distributions. We have used the Anderson-Darling test to distinguish relaxed and non-relaxed systems. This analysis indicates that 84% of groups have galaxy velocities consistent with the normal distribution, while 16% of them have more complex underlying distributions. Properties of the member galaxies are investigated taking into account this classification. Our results indicate that galaxies in Gaussian groups are significantly more evolved than galaxies in non-relaxed systems out to distances of about 4R200, presenting signficantly redder (B-R) color. We also find evidence that galaxies with M_R < -21.5 in Gaussian groups are closer to the condition of energy equipartition.
Human review
Discussion
Know something about this paper? Leave a comment, or highlight any passage above to comment on it.