| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m16d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP7W/3D774A2 | |||
| Repository | sid.inpe.br/mtc-m19/2012/12.11.18.36 | |||
| Last Update | 2013:07.11.13.16.26 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/mtc-m19/2012/12.11.18.36.41 | |||
| Metadata Last Update | 2021:07.28.22.06.39 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| DOI | 10.1093/mnrasl/sls014 | |||
| ISSN | 0035-8711 | |||
| Citation Key | FerrerasLaRoVaCaFaRi:2013:SyVaSt | |||
| Title | Systematic variation of the stellar initial mass function with velocity dispersion in early-type galaxies  | |||
| Year | 2013 | |||
| Access Date | 2024, May 16 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 2 | |||
| Size | 607 KiB | |||
| 2. Context | ||||
| Author | 1 Ferreras, Ignacio 2 La Barbera, Francesco 3 Rosa, Ignacio G. de la 4 Vazdekis, Alexandre 5 Carvalho, Reinaldo Ramos de 6 Falcón-Barroso, Jesús 7 Ricciardelli, Elena | |||
| Resume Identifier | 1 2 3 4 5 8JMKD3MGP5W/3C9JJ5B | |||
| Group | 1 2 3 4 5 DAS-CEA-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 Mullard Space Science Laboratory, University College London 2 INAF-Osservatorio Astronomico di Capodimonte, I-80131 Napoli, Italy 3 Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, Tenerife, Spain 4 Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, Tenerife, Spain 5 Instituto Nacional de Pesquisas Espaciais (INPE) 6 Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, Tenerife, Spain 7 Departament d’Astronomia i Astrofisica, Universitat de Valencia | |||
| Author e-Mail Address | 1 ferreras@star.ucl.ac.uk 2 3 4 5 reinaldo@das.inpe.br | |||
| e-Mail Address | marcelo.pazos@inpe.br | |||
| Journal | Monthly Notices of the Royal Astronomical Society Letters | |||
| Volume | 429 | |||
| Number | 1 | |||
| Pages | L15-L19 | |||
| Secondary Mark | A1 A1 A1 A2 A2 A2 B3 C | |||
| History (UTC) | 2012-12-13 18:18:44 :: marcelo.pazos@sid.inpe.br -> administrator :: 2012 2013-07-11 13:16:26 :: administrator :: 2012 -> 2013 2021-07-28 22:06:39 :: administrator -> marcelo.pazos@inpe.br :: 2013 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Keywords | elliptical and lenticular galaxies cD galaxies galaxies evolution galaxies formation stellar content | |||
| Abstract | An essential component of galaxy formation theory is the stellar initial mass function (IMF) that describes the parent distribution of stellar mass in star-forming regions. We present observational evidence in a sample of early-type galaxies (ETGs) of a tight correlation between central velocity dispersion and the strength of several absorption features sensitive to the presence of low-mass stars. Our sample comprises ∼40 000 ETGs from the Spheroids Panchromatic Investigation in Different Environmental Regions survey (z <~ 0.1). The data extracted from the Sloan Digital Sky Survey are combined, rejecting both noisy data, and spectra with contamination from telluric lines, resulting in a set of 18 stacked spectra at high signal-to-noise ratio (S/N >~ 400Å−1). A combined analysis of IMF-sensitive line strengths and spectral fitting is performed with the latest state-of-the-art population synthesis models (an extended version of the MILES models). A significant trend is found between IMF slope and velocity dispersion, towards an excess of low-mass stars in the most massive galaxies. Although we emphasize that accurate values of the IMF slope will require a detailed analysis of chemical composition (such as [α/Fe] or even individual element abundance ratios), the observed trends suggest that low-mass ETGs are better fitted by a Kroupa-like IMF, whereas massive galaxies require bottom-heavy IMFs, exceeding the Salpeter slope at σ >~ 200 km s−1. | |||
| Area | CEA | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAS > Systematic variation of... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://urlib.net/ibi/8JMKD3MGP7W/3D774A2 | |||
| zipped data URL | http://urlib.net/zip/8JMKD3MGP7W/3D774A2 | |||
| Language | en | |||
| Target File | MNRAS-2013-Ferreras-L15-9.pdf | |||
| User Group | administrator marcelo.pazos@inpe.br | |||
| Reader Group | administrator marcelo.pazos@inpe.br | |||
| Visibility | shown | |||
| Archiving Policy | allowpublisher allowfinaldraft | |||
| Read Permission | allow from all | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Mirror Repository | iconet.com.br/banon/2006/11.26.21.31 | |||
| Next Higher Units | 8JMKD3MGPCW/3ETR8EH | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.58.48 1 | |||
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX; SCOPUS. | |||
| Host Collection | sid.inpe.br/mtc-m19@80/2009/08.21.17.02 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn label lineage mark month nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | marcelo.pazos@inpe.br | |||
| update | ||||