Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Gramann, M."'
Friends-of-friends galaxy group finder with membership refinement. Application to the local Universe
Publikováno v:
A&A 588, A14 (2016)
Context. Groups form the most abundant class of galaxy systems. They act as the principal drivers of galaxy evolution and can be used as tracers of the large-scale structure and the underlying cosmology. However, the detection of galaxy groups from g
Externí odkaz:
http://arxiv.org/abs/1601.01117
Autor:
Tempel, E., Tamm, A., Gramann, M., Tuvikene, T., Liivamägi, L. J., Suhhonenko, I., Kipper, R., Einasto, M., Saar, E.
We provide flux-limited and volume-limited galaxy group and cluster catalogues, based on the spectroscopic sample of the SDSS data release 10 galaxies. We used a modified friends-of-friends (FoF) method with a variable linking length in the transvers
Externí odkaz:
http://arxiv.org/abs/1402.1350
We compare the galaxy populations in superclusters of different morphology in the nearby Universe (180 < d < 270 Mpc) to see whether the inner structure and overall morphology of superclusters are important in shaping galaxy properties in supercluste
Externí odkaz:
http://arxiv.org/abs/1401.3226
Autor:
Nurmi, P., Heinämäki, P., Sepp, T., Tago, E., Saar, E., Gramann, M., Einasto, M., Tempel, E., Einasto, J.
Publikováno v:
2013MNRAS.tmp.2296N
The Millennium N-body simulation and the Sloan Digital Sky Survey seventh data release (SDSS DR7) galaxy and galaxy group catalogues are compared to study the properties of galaxy groups and the distribution of galaxies in groups. We construct mock g
Externí odkaz:
http://arxiv.org/abs/1310.7388
Autor:
Einasto, M., Liivamagi, L. J., Tempel, E., Saar, E., Vennik, J., Nurmi, P., Gramann, M., Einasto, J., Tago, E., Heinamaki, P., Ahvensalmi, A., Martinez, V. J.
We study the relations between the multimodality of galaxy clusters drawn from the SDSS DR8 and the environment where they reside. As cluster environment we consider the global luminosity density field, supercluster membership, and supercluster morph
Externí odkaz:
http://arxiv.org/abs/1204.0933
Autor:
Lietzen, H., Heinamaki, P., Nurmi, P., Tago, E., Saar, E., Liivamagi, J., Tempel, E., Einasto, M., Einasto, J., Gramann, M., Takalo, L. O.
For the first time spectroscopic galaxy redshift surveys are reaching the scales where galaxies can be studied together with the nearest quasars. This gives an opportunity to study the dependence between the activity of a quasar and its environment i
Externí odkaz:
http://arxiv.org/abs/0904.0558
Autor:
Einasto, M., Saar, E., Martinez, V. J., Einasto, J., Liivam"agi, L. J., Tago, E., Starck, J. -L., Mueller, V., Hein"am"aki, P., Nurmi, P., Paredes, S., Gramann, M., Huetsi, G.
Publikováno v:
Astrophys.J.685:83-104,2008
We present a morphological study of the two richest superclusters from the 2dF Galaxy Redshift Survey (SCL126, the Sloan Great Wall, and SCL9, the Sculptor supercluster). We use Minkowski functionals, shapefinders, and galaxy group information to stu
Externí odkaz:
http://arxiv.org/abs/0806.0325
Autor:
Einasto, M., Saar, E., Einasto, J., Tago, E., Liivam"agi, L. J., Martinez, V. J., Starck, J. -L., M"uller, V., Hein"am"aki, P., Nurmi, P., Gramann, M., H"utsi, G.
We study the morphology of galaxy populations of the richest superclusters from the catalogue of superclusters of galaxies in the 2dF Galaxy Redshift Survey using the luminosity density distribution and Minkowski functional V3. We compare the propert
Externí odkaz:
http://arxiv.org/abs/0706.1126
Autor:
Einasto, M., Saar, E., Liivam"agi, L. J., Einasto, J., Tago, E., Martinez, V. J., Starck, J. -L., M"uller, V., Hein"am"aki, P., Nurmi, P., Gramann, M., H"utsi, G.
Publikováno v:
Astron.Astrophys.476:697,2007
We study the morphology of the richest superclusters from the catalogues of superclusters of galaxies in the 2dF Galaxy Redshift Survey and compare the morphology of real superclusters with model superclusters in the Millennium Simulation. We use Min
Externí odkaz:
http://arxiv.org/abs/0706.1122
Publikováno v:
Mon.Not.Roy.Astron.Soc. 333 (2002) 93
We allow a more general (step-function) form of the primordial power spectrum than the usual featureless power-law Harrison--Zeldovich (with spectral index n=1) power spectrum, and fit it to the latest Cosmic Microwave Background data sets. Although
Externí odkaz:
http://arxiv.org/abs/astro-ph/0111208