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1. Identity statement
Reference TypeJournal Article
Sitemtc-m21b.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34P/3LFGHLB
Repositorysid.inpe.br/mtc-m21b/2016/04.08.16.09
Last Update2016:04.08.16.15.16 (UTC) administrator
Metadata Repositorysid.inpe.br/mtc-m21b/2016/04.08.16.09.25
Metadata Last Update2018:06.04.02.40.40 (UTC) administrator
DOI10.3847/0004-637X/819/2/131
ISSN0004-637X
1538-4357
Citation KeyTeodoroDHRMSRGMPWCPFGHHNAJLLPBCCHGHW:2016:COOREL
TitleHe II λ4686 EMISSION from the MASSIVE BINARY SYSTEM in η CAR: CONSTRAINTS to the ORBITAL ELEMENTS and the NATURE of the PERIODIC MINIMA
Year2016
MonthMar.
Access Date2024, May 18
Type of Workjournal article
Secondary TypePRE PI
Number of Files1
Size1552 KiB
2. Context
Author 1 Teodoro, M.
 2 Damineli, A.
 3 Heathcote, B.
 4 Richardson, N. D.
 5 Moffat, A. F. J.
 6 St-Jean, L.
 7 Russell, C.
 8 Gull, T. R.
 9 Madura, T. I.
10 Pollard, K. R.
11 Walter, F.
12 Coimbra, A.
13 Prates, R.
14 Fernández-Lajus, E.
15 Gamen, R. C.
16 Hickel, G.
17 Henrique, W.
18 Navarete, F.
19 Andrade, T.
20 Jablonski, Francisco José
21 Luckas, P.
22 Locke, M.
23 Powles, J.
24 Bohlsen, T.
25 Chini, R.
26 Corcoran, M. F.
27 Hamaguchi, K.
28 Groh, J. H.
29 Hillier, D. J.
30 Weigelt, G.
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Affiliation 1 NASA Goddard Space Flight Center
 2 Universidade de São Paulo (USP)
 3 SASER Team
 4 Université de Montréal
 5 Université de Montréal
 6 Université de Montréal
 7 NASA Goddard Space Flight Center
 8 NASA Goddard Space Flight Center
 9 NASA Goddard Space Flight Center
10 University of Canterbury
11 Stony Brook University
12 Laboratório Nacional de Astrofica
13 Laboratório Nacional de Astrofica
14 Universidad Nacional de la Plata
15 Universidad Nacional de la Plata
16 Universidade Federal de Itajubá (UNIFEI)
17 Universidade Federal de Itajubá (UNIFEI)
18 Universidade de São Paulo (USP)
19 Universidade de São Paulo (USP)
20 Instituto Nacional de Pesquisas Espaciais (INPE)
21 SASER Team
22 SASER Team
23 SASER Team
24 SASER Team
25 Ruhr-Universitat Bochum
26 NASA Goddard Space Flight Center
27 NASA Goddard Space Flight Center
28 Geneva Observatory
29 University of Pittsburgh
30 Max-Planck-Institut für Radioastronomie
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JournalAstrophysical Journal
Volume819
Number2
Pages131
Secondary MarkA1_QUÍMICA A1_INTERDISCIPLINAR A1_GEOCIÊNCIAS A1_ENGENHARIAS_III A1_ASTRONOMIA_/_FÍSICA A2_ENGENHARIAS_IV B2_ENSINO
History (UTC)2016-04-08 16:09:25 :: simone -> administrator ::
2018-06-04 02:40:40 :: administrator -> simone :: 2016
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
Version Typepublisher
Keywordsbinaries: general
circumstellar matter
stars: individual (ν

Carinae)
stars: massive
AbstractEta Carinae (η Car) is an extremely massive binary system in which rapid spectrum variations occur near periastron. Most notably, near periastron the He ii λ4686 line increases rapidly in strength, drops to a minimum value, then increases briefly before fading away. To understand this behavior, we conducted an intense spectroscopic monitoring of the He ii λ4686 emission line across the 2014.6 periastron passage using ground- and space-based telescopes. Comparison with previous data confirmed the overall repeatability of the line equivalent width (EW), radial velocities, and the timing of the minimum, though the strongest peak was systematically larger in 2014 than in 2009 by 26%. The EW variations, combined with other measurements, yield an orbital period of 2022.7 ±0.3 days. The observed variability of the EW was reproduced by a model in which the line flux primarily arises at the apex of the wind-wind collision and scales inversely with the square of the stellar separation, if we account for the excess emission as the companion star plunges into the hot inner layers of the primary's atmosphere, and including absorption from the disturbed primary wind between the source and the observer. This model constrains the orbital inclination to 135°-153°, and the longitude of periastron to 234°-252°. It also suggests that periastron passage occurred on days). Our model also reproduced EW variations from a polar view of the primary star as determined from the observed He ii λ4686 emission scattered off the Homunculus nebula.
AreaCEA
Arrangementurlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAS > He II {λ4686}...
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source Directory Contentthere are no files
agreement Directory Content
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4. Conditions of access and use
data URLhttp://mtc-m21b.sid.inpe.br/ibi/8JMKD3MGP3W34P/3LFGHLB
zipped data URLhttp://mtc-m21b.sid.inpe.br/zip/8JMKD3MGP3W34P/3LFGHLB
Languageen
Target FileTeodoro_he II.pdf
User Groupsimone
Reader Groupadministrator
simone
Visibilityshown
Archiving Policyallowpublisher allowfinaldraft
Update Permissionnot transferred
5. Allied materials
Mirror Repositoryurlib.net/www/2011/03.29.20.55
Next Higher Units8JMKD3MGPCW/3ETR8EH
Citing Item Listsid.inpe.br/bibdigital/2013/10.01.00.07 2
DisseminationWEBSCI; PORTALCAPES; COMPENDEX; SCOPUS.
Host Collectionsid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notes
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