| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m21b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 8JMKD3MGP5W34M/3FA45TC |
| Repository | sid.inpe.br/mtc-m21b/2013/11.26.17.00.46 |
| Last Update | 2013:12.11.13.38.21 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m21b/2013/11.26.17.00.47 |
| Metadata Last Update | 2018:06.04.03.14.13 (UTC) administrator |
| DOI | 10.1093/mnras/stt943 |
| ISSN | 0035-8711 |
| Label | scopus 2013-11 |
| Citation Key | LaBarberaFVRCTFR:2013:CoStIn |
| Title | SPIDER VIII - constraints on the stellar initial mass function of early-type galaxies from a variety of spectral features  |
| Year | 2013 |
| Access Date | 2024, May 16 |
| Type of Work | journal article |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 3444 KiB |
| 2. Context | |
| Author | 1 La Barbera, F. 2 Ferreras, I. 3 Vazdekis, A. 4 Rosa, I. G. de la 5 Carvalho, Reinaldo Ramos de 6 Trevisan, Marina 7 Falcón-Barroso, J. 8 Ricciardelli, E. |
| Resume Identifier | 1 2 3 4 5 8JMKD3MGP5W/3C9JJ5B |
| Group | 1 2 3 4 5 DAS-CEA-INPE-MCTI-GOV-BR 6 DAS-CEA-INPE-MCTI-GOV-BR |
| Affiliation | 1 INAF - Osservatorio Astronomico di Capodimonte, I-80131 Napoli, Italy 2 MSSL, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, United Kingdom 3 Instituto de Astrofísica de Canarias (IAC), E-38200 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, E-38205 Tenerife, Spain 4 Instituto de Astrofísica de Canarias (IAC), E-38200 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, E-38205 Tenerife, Spain 5 Instituto Nacional de Pesquisas Espaciais (INPE) 6 Instituto Nacional de Pesquisas Espaciais (INPE) 7 Instituto de Astrofísica de Canarias (IAC), E-38200 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, E-38205 Tenerife, Spain 8 Departament d'Astronomia i Astrofisica, Universitat de Valencia, C/Dr Moliner 50, E-46100 Burjassot, Valencia, Spain |
| Author e-Mail Address | 1 2 3 4 5 reinaldo@das.inpe.br 6 marina@das.inpe.br |
| e-Mail Address | marcelo.pazos@inpe.br |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 433 |
| Number | 4 |
| Pages | 1-34 |
| Secondary Mark | A1 A1 A1 A2 A2 A2 B3 C |
| History (UTC) | 2018-06-04 03:14:13 :: 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 | galaxies formation initial mass function stellar content |
| Abstract | We perform a spectroscopic study to constrain the stellar Initial Mass Function (IMF) by using a large sample of 24,781 early-type galaxies from the SDSS-based SPIDER survey. Clear evidence is found of a trend between IMF and central velocity dispersion, sigma0, evolving from a standard Kroupa/Chabrier IMF at 100km/s towards a more bottom-heavy IMF with increasing sigma0, becoming steeper than the Salpeter function at sigma0>220km/s. We analyze a variety of spectral indices, corrected to solar scale by means of semi-empirical correlations, and fitted simultaneously with extended MILES (MIUSCAT) stellar population models. Our analysis suggests that sigma0, rather than [alpha/Fe], drives the IMF variation. Although our analysis cannot discriminate between a single power-law (unimodal) and a low-mass (<0.5MSun) tapered (bimodal) IMF, we can robustly constrain the fraction in low-mass stars at birth, that is found to increase from 20% at sigma0~100km/s, up to 80% at sigma0~300km/s. Additional constraints can be provided with stellar mass-to-light (M/L) ratios: unimodal models predict M/L significantly larger than dynamical M/L, across the whole sigma0 range, whereas a bimodal IMF is compatible. Our results are robust against individual abundance variations. No significant variation is found in Na and Ca in addition to the expected change from the correlation between [alpha/Fe] and sigma0. |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAS > SPIDER VIII -... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://mtc-m21b.sid.inpe.br/ibi/8JMKD3MGP5W34M/3FA45TC |
| zipped data URL | http://mtc-m21b.sid.inpe.br/zip/8JMKD3MGP5W34M/3FA45TC |
| Language | en |
| Target File | 1305.2273v2.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-m21b/2013/09.26.14.25.20 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn lineage mark month nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url |
| 7. Description control | |
| e-Mail (login) | marcelo.pazos@inpe.br |
| update | |