| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16c.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZ3P8SECKy/EtTmr |
| Repository | sid.inpe.br/jeferson/2004/12.16.11.08 |
| Last Update | 2006:06.14.04.18.50 (UTC) administrator |
| Metadata Repository | sid.inpe.br/jeferson/2004/12.16.11.08.09 |
| Metadata Last Update | 2018:06.04.04.12.58 (UTC) administrator |
| Secondary Key | INPE-12557-PRE/7854 |
| ISBN/ISSN | 0035-8711 |
| ISSN | 1365-2966 |
| Citation Key | FernandesCarvContGal:2004:MaStPo |
| Title | Massive star populations in wolf-rayet galaxies  |
| Year | 2004 |
| Month | Dec. |
| Access Date | 2024, May 16 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 459 KiB |
| 2. Context | |
| Author | 1 Fernandes, I. F 2 Carvalho, Reinaldo Ramos de 3 Contini, T 4 Gal, R. R. |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JJ5B |
| Group | 1 DAS-INPE-MCT-BR |
| Affiliation | 1 Univ Sao Paulo, Inst Astron & Geofis, Sao Paulo 2 Instituto Nacional de Pesquisas Espaciais,Divisão de Astrofisica(INPE,DAS) 3 Observ Midi Pyrenees, Astrophys Lab, UMR 5572, Toulouse, F-31400 France 4 Univ Calif Davis, Dept Phys, Davis, CA 95616 USA |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 355 |
| Number | 3 |
| Pages | 728-746 |
| History (UTC) | 2004-12-16 13:08:10 :: alexandra -> marciana :: 2005-06-14 17:04:36 :: marciana -> administrator :: 2006-09-27 21:01:24 :: administrator -> marciana :: 2008-05-02 16:20:27 :: marciana -> administrator :: 2018-06-04 04:12:58 :: administrator -> marciana :: 2004 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | galaxies : abundances galaxies : evolution galaxies : starburst /H-II-REGIONS EMISSION-LINE GALAXIES PRIMORDIAL HELIUM ABUNDANCE LONG-SLIT SPECTROSCOPY BARRED SPIRAL GALAXIES GALACTIC HII-REGIONS STARBURST GALAXIES CHEMICAL ABUNDANCES GASEOUS NEBULAE IONIZED-GAS |
| Abstract | We analyse long-slit spectral observations of 14 Wolf-Rayet (WR) galaxies from the sample of Schaerer, Contini & Pindao. All 14 galaxies show broad WR emission in the blue region of the spectrum, consisting of a blend of IIIlambda4640,CIIIlambda4650, CIVlambda4658 and HeIIlambda4686 emission lines, which is a spectral characteristic of WN stars. Broad CIVlambda5808 emission, termed the red bump, is detected in nine galaxies and CIIIlambda5996 is detected in six galaxies. These emission features are due to WC stars. We derive the numbers of late WN and early WC stars from the luminosity of the blue and red bumps, respectively. The number of O stars is estimated from the luminosity of the Hbeta emission line, after subtracting the contribution of WR stars. The Schaerer & Vacca models predict that the number of WR stars relative to O stars, N-WR/N-O, increases with metallicity. For low-metallicity galaxies, the results agree with predictions of evolutionary synthesis models for galaxies with a burst of star formation, and indicate an initial mass function (IMF) slope -2 less than or similar to Gamma less than or similar to -2.35 in the low-metallicity regime. For high-metallicity galaxies our observations suggest a Salpeter IMF (Gamma = -2.35) and an extended short burst. The main possible sources of error are the adopted luminosities for single WCE and WNL stars. We also report, for the first time, on NGC 450 as a galaxy with WR characteristics. For NGC 450, we estimate the number of WN and WC stars. The number ratio N-WR/N-O, and the equivalent widths of the blue bump, EWlambda4686, and of the red bump, EWlambda5808, in NGC 450 are also in good agreement with the instantaneous burst model prediction for WR galaxies. |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAS > Massive star populations... |
| 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://urlib.net/ibi/6qtX3pFwXQZ3P8SECKy/EtTmr |
| zipped data URL | http://urlib.net/zip/6qtX3pFwXQZ3P8SECKy/EtTmr |
| Language | en |
| Target File | massive.pdf |
| User Group | administrator alexandra marciana |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | allowpublisher allowfinaldraft |
| Read Permission | allow from all |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ETR8EH |
| Dissemination | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| Host Collection | sid.inpe.br/mtc-m18@80/2008/03.17.15.17 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel documentstage doi e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |