%0 Generic %1 ruiz2013satellite %A Ruiz, Pablo %A Trujillo, Ignacio %A Mármol-Queraltó, Esther %D 2013 %K elliptical mergers satellites %T Satellite galaxies around present-day massive ellipticals %U http://arxiv.org/abs/1312.4533 %X Using the spectroscopic and photometric catalogues of the Sloan Digital Sky Survey (SDSS DR7), we have explored the satellite distribution around $\sim$1000 massive (M$_\star$$\gtrsim$2$\times$10$^11$M$_ødot$) visually classified elliptical galaxies down to a satellite mass ratio of 1:400 (i.e. 5$\times$$10^8$$łesssim$M$_sat$$łesssim$2$\times$10$^11$M$_ødot$). Our host galaxies were selected to be representative of a mass complete sample. The satellites of these galaxies were searched within a projected radial distance of 100 kpc to their hosts. We have found that only 17-23% of the massive ellipticals has at least a satellite down to a mass ratio 1:10. This number increases to 40-52% if we explore satellites down to 1:100 and is $>$55-70% if we go further down to 1:400. The average projected radial distance of the satellites to their hosts is $\sim$59 kpc (which can be decreased down to 49-51 kpc if we account for incompleteness effects). The number of satellites per galaxy host only increases very mildly at decreasing the satellite mass. The fraction of mass which is contained in the satellites down to a mass ratio of 1:400 is 7.4% of the total mass contained by the hosts. Satellites with a mass ratio from 1:2 to 1:5 (with $\sim$27% of the total mass of the satellites) are the main contributor to the total satellite mass. If the satellites eventually infall into the host galaxies, the merger channel will be largely dominated by satellites with a mass ratio down to 1:10 (as these objects have 66% of the total mass in satellites).

@misc{ruiz2013satellite, abstract = {Using the spectroscopic and photometric catalogues of the Sloan Digital Sky Survey (SDSS DR7), we have explored the satellite distribution around $\sim$1000 massive (M$_\star$$\gtrsim$2$\times$10$^{11}$M$_\odot$) visually classified elliptical galaxies down to a satellite mass ratio of 1:400 (i.e. 5$\times$$10^{8}$$\lesssim$M$_{sat}$$\lesssim$2$\times$10$^{11}$M$_\odot$). Our host galaxies were selected to be representative of a mass complete sample. The satellites of these galaxies were searched within a projected radial distance of 100 kpc to their hosts. We have found that only 17-23% of the massive ellipticals has at least a satellite down to a mass ratio 1:10. This number increases to 40-52% if we explore satellites down to 1:100 and is $>$55-70% if we go further down to 1:400. The average projected radial distance of the satellites to their hosts is $\sim$59 kpc (which can be decreased down to 49-51 kpc if we account for incompleteness effects). The number of satellites per galaxy host only increases very mildly at decreasing the satellite mass. The fraction of mass which is contained in the satellites down to a mass ratio of 1:400 is 7.4% of the total mass contained by the hosts. Satellites with a mass ratio from 1:2 to 1:5 (with $\sim$27% of the total mass of the satellites) are the main contributor to the total satellite mass. If the satellites eventually infall into the host galaxies, the merger channel will be largely dominated by satellites with a mass ratio down to 1:10 (as these objects have 66% of the total mass in satellites).}, added-at = {2013-12-18T09:04:19.000+0100}, author = {Ruiz, Pablo and Trujillo, Ignacio and Mármol-Queraltó, Esther}, biburl = {https://www.bibsonomy.org/bibtex/2a345084086e9c6391f2eb85ba26cdd7c/miki}, description = {[1312.4533] Satellite galaxies around present-day massive ellipticals}, interhash = {dddac2f76f87e1949b2bb0bca3dd64f6}, intrahash = {a345084086e9c6391f2eb85ba26cdd7c}, keywords = {elliptical mergers satellites}, note = {cite arxiv:1312.4533Comment: 14 pages, 10 figures, MNRAS submitted. Comments are welcome}, timestamp = {2013-12-18T09:04:19.000+0100}, title = {Satellite galaxies around present-day massive ellipticals}, url = {http://arxiv.org/abs/1312.4533}, year = 2013 }