J/ApJS/168/289 NUV spectrum of eta Car in 2003.5 (Nielsen+, 2007)
Eta Carinae across the 2003.5 minimum: deciphering the spectrum toward
Weigelt D.
Nielsen K.E., Ivarsson S., Gull T.R.
<Astrophys. J. Suppl. Ser., 168, 289-296 (2007)>
=2007ApJS..168..289N 2007ApJS..168..289N
ADC_Keywords: Stars, variable ; Spectra, ultraviolet ; Spectroscopy
Keywords: circumstellar matter - line: identification -
stars: individual (η Carinae) - ultraviolet: stars
Abstract:
Hubble Space Telescope Space Telescope Imaging Spectrograph (HST STIS)
near-ultraviolet (NUV) echelle spectra reveal complex structure in the
sight line toward the Weigelt D condensation located 0.25"
north-northwest of η Car. This analysis uses data recorded between
2000 October and 2004 March to monitor changes in emission and
absorption as the UV photoexciting fluxes from η Car drop and
later reappear. We compare changes in the wind profiles seen against
the star and the CS absorptions to gain knowledge of the properties of
the extended wind and the ejecta. Complete spectra, in the wavelength
region 2424-2706Å, with line identifications are available in the
electronic edition of this paper.
Description:
The data used in this analysis were obtained with the STIS/MAMA E230H
grating. Most observations were obtained with the E230H grating
setting centered at 2563Å.
Objects:
-------------------------------------------
RA (2000) DE Designation(s)
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10 45 03.6 -59 41 04 eta Car = HD 93308
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 71 613 Identifications of lines in the spectral
interval 2424-2706Å
list.dat 39 7 List of spectra, with 7 pixel extraction
sp/* . 7 *Echelle spectra
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Note on sp/*: The data is processed using the CALSTIS software and it is
only an extracted part of the spectrum. In this paper we have used a 7
pixel (0.0875") extraction from the original 0.2x0.3 or 0.2x0.2
HST/STIS aperture too avoid scattered light from the surrounding
nebula. The raw data can be downloaded from the MAST web page.
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See also:
J/ApJS/71/983 : UV spectrum of eta Car (Viotti+ 1989)
J/A+A/304/415 : uvby-Hbeta photometry of Eta Car 1992-94 (van Genderen+ 1995)
J/A+A/343/847 : Geneva Photometry of Eta Car (van Genderen+ 1999)
J/A+A/419/215 : Emission lines of eta Car (Hartman+, 2004)
J/AJ/129/2018 : RXTE scaled fluxes of eta Car (Corcoran+, 2005)
J/ApJS/157/138 : UV spectrum of eta Car (Nielsen+, 2005)
J/ApJS/163/173 : UV spectrum of eta Car in 2003.5 (Gull+, 2006)
J/A+A/493/1093 : BVRI light curves of eta Car (Fernandez-Lajus+, 2009)
J/ApJS/181/473 : Eta Carinae: visible and near-IR analysis (Nielsen+, 2009)
J/other/NewA/15.108 : UBVRIHalpha of eta Car in 2009 (Fernandez-Lajus+ 2010)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 F7.2 0.1nm lambda Observed wavelength in Angstroms
9- 34 A26 --- Line Line Identification
36- 42 F7.2 0.1nm lambdaL Laboratory wavelength in Angstroms
44- 48 A5 --- f_Line Flag on Line (1)
50- 53 I4 km/s HV Heliocentric velocity
55- 59 I5 cm-1 Elow Energy for the transitions's lower level
61- 66 F6.2 [-] log(gf) ? Log of the oscillator strength*statistical
weight
68- 71 A4 --- r_log(gf) Reference to the log(gf) (2)
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Note (1): Flag on Line, defined as follows:
cs = Circumstellar absorption;
wind = Projected stellar wind line;
em = Emission line, (*) indicates pumped upper level;
ism = Interstellar absorption;
1 = Upper level directly pumped by HI Lyα;
2 = Upper level populated through cascades from HI Lya pumped energy level;
3 = Suggested pumping by SiIII]λ1892 in RR Tel
(Hartman & Johansson, 2000A&A...359..627H 2000A&A...359..627H);
4 = Suggested pumping by HeIIλ1084 in RR Tel
(Hartman & Johansson, 2000A&A...359..627H 2000A&A...359..627H);
5 = Suggested pumping by NIV]λ1487 in RR Tel
(Hartman & Johansson, 2000A&A...359..627H 2000A&A...359..627H).
Note (2): References as follows:
F88 = Fuhr J.R., Martin G.A. and Wiese W.L. 1988,
J.Phys.Chem.Ref.Data 17, Suppl 4, Cat. VI/72
G73 = Garz T. 1973A&A....26..471G 1973A&A....26..471G
G75 = Goly A., Moity J. and Weniger S., 1975A&A....38..259G 1975A&A....38..259G
K00 = Kling R. and Greismann U. 2000ApJ...531.1173K 2000ApJ...531.1173K
K01 = Kling R., Schnabel R. and Greismann U. 2001ApJS..134..173K 2001ApJS..134..173K
K88 = Kurucz R.L. 1988, Trans IAU XXB M McNally, ed.,
Dordrecht: Kluwer, 168
M88 = Martin G.A., Fuhr J.R. and Wiese W.L. 1988,
J.Phys.Chem.Ref.Data 17, Suppl 3, Cat. VI/72
M98 = Mullman K.L., Cooper J.C. and Lawler J.E. 1998ApJ...495..503M 1998ApJ...495..503M
N05 = Nilsson et al. 2006A&A...445.1165N 2006A&A...445.1165N
O91 = O'Brien et al. 1991, J.Opt.Soc.Am. B8, 1185
P01a = Pickering J.C., Johansson S. and Smith P.L. 2001, Cat. J/A+A/377/361
P01b = Pickering J.C., Thorne, A.P. and Perez R. 2001ApJS..132..403P 2001ApJS..132..403P
R98 = Rasssen A.J.J. and Uylings P.H.M. Data available at:
ftp://ftp.wins.uva.nl/pub/orth/iron/FeII.E1
Z87 = Zeippen C. J. 1987A&A...173..410Z 1987A&A...173..410Z
W66 = Wiese W.L., Smith M.W. and Miles B.M. 1969, NSRDS-NBS 22
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 4 I4 0.1nm lambda STIS band central wavelength in Angstroms
6- 15 A10 "DD/MM/YYYY" Obs.Date Date of observation
17- 39 A23 --- FileName Name of the file spectrum file in
data subdirectory
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Byte-by-byte Description of file: sp/*
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Bytes Format Units Label Explanations
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1- 9 F9.4 0.1nm lambda Wavelength in Angstroms
11- 22 E12.5 10mW/m2/nm Flux Flux in units of erg/s/cm2/Å
24- 35 E12.5 10mW/m2/nm e_Flux Error in Flux
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 19-Nov-2008