%0 Generic %1 Huxor2011 %A Huxor, Avon %A Phillipps, Steve %A Price, James %A Harniman, Rob %D 2011 %K environment tidal %T Tidal streams in newly discovered M32 analogues: evidence for the stripping scenario %U http://arxiv.org/abs/1103.1257 %X We present two newly-discovered compact elliptical (cE) galaxies, exhibiting clear evidence of tidal steams, and found during a search of SDSS DR7 for cE candidates. The structural parameters of the cEs are derived using GALFIT, giving effective radii, Re, of 388 and 263 parsecs, and B-band mean surface brightnesses within Re of 19.4 and 19.2 magnitudes per arcsec squared. We have re-analysed the SDSS spectra, which indicate that they possess young to intermediate-age stellar populations. These two cEs provide direct evidence, a "smoking gun", for the process of tidal stripping that is believed to be the origin of M32-type galaxies. Both are in small groups with a large spiral fraction, suggesting that we may be seeing the formation of such cE galaxies in dynamically young environments. The more compact of the galaxies is found in a small group not unlike the Local Group, and thus provides an additional model for understanding M32.

@misc{Huxor2011, abstract = { We present two newly-discovered compact elliptical (cE) galaxies, exhibiting clear evidence of tidal steams, and found during a search of SDSS DR7 for cE candidates. The structural parameters of the cEs are derived using GALFIT, giving effective radii, Re, of 388 and 263 parsecs, and B-band mean surface brightnesses within Re of 19.4 and 19.2 magnitudes per arcsec squared. We have re-analysed the SDSS spectra, which indicate that they possess young to intermediate-age stellar populations. These two cEs provide direct evidence, a "smoking gun", for the process of tidal stripping that is believed to be the origin of M32-type galaxies. Both are in small groups with a large spiral fraction, suggesting that we may be seeing the formation of such cE galaxies in dynamically young environments. The more compact of the galaxies is found in a small group not unlike the Local Group, and thus provides an additional model for understanding M32. }, added-at = {2011-03-08T11:43:01.000+0100}, author = {Huxor, Avon and Phillipps, Steve and Price, James and Harniman, Rob}, biburl = {https://www.bibsonomy.org/bibtex/2d5d8ed787571154b1845061e7385212f/miki}, description = {[1103.1257] Tidal streams in newly discovered M32 analogues: evidence for the stripping scenario}, interhash = {bce181384edfb4704747bc4c203a7043}, intrahash = {d5d8ed787571154b1845061e7385212f}, keywords = {environment tidal}, note = {cite arxiv:1103.1257 Comment: 9 pages, 10 figures. Accepted to MNRAS}, timestamp = {2011-03-08T11:43:01.000+0100}, title = {Tidal streams in newly discovered M32 analogues: evidence for the stripping scenario}, url = {http://arxiv.org/abs/1103.1257}, year = 2011 }