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Authordc.contributor.authorCordero, Juan P. 
Authordc.contributor.authorCampusano Brown, Luis 
Authordc.contributor.authorPropris, Roberto de 
Authordc.contributor.authorHaines, Chris 
Authordc.contributor.authorWeinzirl, Tim 
Authordc.contributor.authorJogee, Shardha 
Admission datedc.date.accessioned2016-05-26T16:41:22Z
Available datedc.date.available2016-05-26T16:41:22Z
Publication datedc.date.issued2016
Cita de ítemdc.identifier.citationThe Astrophysical Journal Letters, 817:L6 (7pp), 2016 January 20en_US
Identifierdc.identifier.otherDOI: 10.3847/2041-8205/817/1/L6
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/138514
General notedc.descriptionArtículo de publicación ISIen_US
Abstractdc.description.abstractA We evaluate the dry merger activity in the Coma cluster, using a spectroscopically complete sample of 70 red-sequence (RS) galaxies, most of which (similar to 75%) are located within 0.2R(200) (similar to 0.5 Mpc) from the cluster center, with data from the Coma Treasury Survey obtained with the Hubble Space Telescope. The fraction of close galaxy pairs in the sample is the proxy employed for the estimation of the merger activity. We identify 5 pairs and 1 triplet, enclosing a total of 13 galaxies, based on limits on projected separation and line-of-sight velocity difference. Of these systems, none show signs of ongoing interaction, and therefore we do not find any true mergers in our sample. This negative result sets a 1 sigma upper limit of 1.5% per Gyr for the major dry merger rate, consistent with the low rates expected in present-day clusters. Detailed examination of the images of all the RS galaxies in the sample reveals only one with low surface brightness features identifiable as the remnant of a past merger or interaction, implying a post-merger fraction below 2%.en_US
Patrocinadordc.description.sponsorshipCONICYT Anillo project ACT-1122 Center of Excellence in Astrophysics and Associated Technologies PFB06 NSF AST-1413652en_US
Lenguagedc.language.isoenen_US
Publisherdc.publisherThe American Astronomical Societyen_US
Type of licensedc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Keywordsdc.subjectGalaxies: clusters: individual (Abell 1656)en_US
Keywordsdc.subjectGalaxies: elliptical and lenticular, cDen_US
Keywordsdc.subjectGalaxias--Evoluciónen_US
Keywordsdc.subjectGalaxies: interactionsen_US
Títulodc.titleDry merger rate and post-merger fraction in the Coma cluster coreen_US
Document typedc.typeArtículo de revista


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Atribución-NoComercial-SinDerivadas 3.0 Chile
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 Chile