Show simple item record

dc.contributor.authorCrnojević, D.
dc.contributor.authorSand, D. J.
dc.contributor.authorBennet, P.
dc.contributor.authorPasetto, S.
dc.contributor.authorSpekkens, K.
dc.contributor.authorCaldwell, N.
dc.contributor.authorGuhathakurta, P.
dc.contributor.authorMcLeod, B.
dc.contributor.authorSeth, A.
dc.contributor.authorSimon, J. D.
dc.contributor.authorStrader, J.
dc.contributor.authorToloba, E.
dc.date.accessioned2019-06-13T19:52:00Z
dc.date.available2019-06-13T19:52:00Z
dc.date.issued2019-02-10
dc.identifier.citationD. Crnojević et al 2019 ApJ 872 80en_US
dc.identifier.issn1538-4357
dc.identifier.doi10.3847/1538-4357/aafbe7
dc.identifier.urihttp://hdl.handle.net/10150/632888
dc.description.abstractThe Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS) is constructing a wide-field map of the resolved stellar populations in the extended halos of these two nearby, prominent galaxies. We present new Magellan/Megacam imaging of a similar to 3 deg(2) area around Centaurus A (Cen A), which filled in much of our coverage to its south, leaving a nearly complete halo map out to a projected radius of similar to 150 kpc and allowing us to identify two new resolved dwarf galaxies. We have additionally obtained deep Hubble Space Telescope (HST) optical imaging of 11 out of the 13 candidate dwarf galaxies identified around Cen A and presented in Crnojevic et al. 2016a: seven are confirmed to be satellites of Cen A, while four are found to be background galaxies. We derive accurate distances, structural parameters, luminosities, and photometric metallicities for the seven candidates confirmed by our HST/ACS imaging. We further study the stellar population along the similar to 60 kpc long (in projection) stream associated with Dw3, which likely had an initial brightness of M-V similar to -15 and shows evidence for a metallicity gradient along its length. Using the total sample of 11 dwarf satellites discovered by the PISCeS survey, as well as 13 brighter previously known satellites of Cen A, we present a revised galaxy luminosity function for the Cen A group down to a limiting magnitude of M-V similar to -8, which has a slope of -1.14 +/- 0.17, comparable to that seen in the Local Group and in other nearby groups of galaxies.en_US
dc.description.sponsorshipNASA from the Space Telescope Science Institute [NNX14AF84G, HST-GO-13856.001]; NSF [AST-1514763, AST-1814208, AST-1821967, AST-1821987, AST-1813708, AST-1813466, AST-1010039, AST-1412504, AST-1412792]; Packard Fellowship; Natural Sciences and Engineering Research Council of Canada (NSERC); National Science Foundation [PHYS-1066293]; Aspen Center for Physics; Smithsonian Astrophysical Observatory; NASA [NNX14AF84G, NAS 5-26555]en_US
dc.language.isoenen_US
dc.publisherIOP PUBLISHING LTDen_US
dc.relation.urlhttp://stacks.iop.org/0004-637X/872/i=1/a=80?key=crossref.ee71687c6486f768c1653583d2bfb604en_US
dc.rights© 2019. The American Astronomical Society. All rights reserved.en_US
dc.subjectgalaxies: dwarfen_US
dc.subjectgalaxies: evolutionen_US
dc.subjectgalaxies: groups: individual (Cen A)en_US
dc.subjectgalaxies: halosen_US
dc.subjectgalaxies: luminosity function, mass functionen_US
dc.subjectgalaxies: photometryen_US
dc.titleThe Faint End of the Centaurus A Satellite Luminosity Functionen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Steward Observen_US
dc.contributor.departmentUniv Arizona, Dept Astronen_US
dc.identifier.journalASTROPHYSICAL JOURNALen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleThe Astrophysical Journal
dc.source.volume872
dc.source.issue1
dc.source.beginpage80
refterms.dateFOA2019-06-13T19:52:00Z


Files in this item

Thumbnail
Name:
Crnojević_2019_ApJ_872_80.pdf
Size:
3.438Mb
Format:
PDF
Description:
Final Published version

This item appears in the following Collection(s)

Show simple item record