2002A&A...385..313K


Query : 2002A&A...385..313K

2002A&A...385..313K - Astronomy and Astrophysics, volume 385, 313-327 (2002/4-1)

The origin of the anomalous intensity ratio between very bright UV FeII lines and their satellites in gaseous condensations close to the star η Carinae.

KLIMOV V., JOHANSSON S. and LETOKHOV V.S.

Abstract (from CDS):

We present a model that explains the anomalous intensity ratios between each of two very bright UV lines of Fe II at 2507Å and 2509Å and its corresponding satellite line, observed in HST spectra of a compact gaseous condensation (blob B) in the vicinity of the star η Car.The model is based on the assumption that the FeII transitions have a substantial optical thickness, which varies as a result of the photodepletion of the long-lived lower states, c4F7/2,9/2, by the intense Lyα radiation. In conditions where the photodepletion rates of these two states differ, the resonance scattering lengths of the spectral lines become different as well. In the presence of a weak, nonresonant (continuous) absorption, this gives rise to a difference in attenuation between the spectral lines (the Hummer effect (Hummer, 1968MNRAS.138...73H)). It is the combination of these two effects that explains the anomalous (as compared with laboratory data) intensity ratios observed in the two pairs of UV FeII lines. Ionization channels of stimulated photodepletion by the Lyα radiation, including the possible role of autoionization levels, are considered.

Abstract Copyright:

Journal keyword(s): atomic processes - line: formation - radiation mechanisms: non-thermal - stars: individual: η Carinae

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 * eta Car Em* 10 45 03.5377808928 -59 41 04.051599720 6.37 7.03 6.48 4.90 4.41 OBepec 2326 0

Query : 2002A&A...385..313K

Basic data :
* eta Car -- Emission-line Star
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
* (1971PW&SO,*,...), X (1A,3A,...), gam (1AGL,1AGLR,...), IR (IRAS,2MASS,...), Em* (EM*,Hen,...), V* (V*,AAVSO), smm (JCMTSE,JCMTSF), Rad (2013MNRAS,MOST), UV (CEL), No* (NOVA), ** (WDS)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
10 45 03.5377808928 -59 41 04.051599720 (Optical) [ 5.1318 1.4336 90 ] C 2020yCat.1350....0G
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
10 43 06.8434371473 -59 25 16.250694440 [ 5.1318 1.4336 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
287.5967871055343 -00.6295434599550 [ 5.1318 1.4336 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr :
-11.0 4.1 [2.0 2.0 90] C 2012yCat.1322....0Z
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz :
V(km/s) -25.0 [2] / z(~) -0.000083 [0.000007] / cz -25.00 [2.00]
   E 1953GCRV..C......0W
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
OBepec E 1971PW&SO...1a...1S
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (9) :
U 6.37 [~] C 2002yCat.2237....0D
B 7.03 [0.02] D 2002A&A...384..180F
V 6.48 [0.01] D 2002A&A...384..180F
R 4.90 [~] C 2002yCat.2237....0D
G 4.034632 [0.012664] C 2020yCat.1350....0G
I 4.41 [~] C 2002yCat.2237....0D
J 1.658 [0.528] D 2003yCat.2246....0C
H 1.073 [0.396] D 2003yCat.2246....0C
K 0.171 [0.380] D 2003yCat.2246....0C
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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sedIcon
within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2 : 233 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (73) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* eta Car 2E 1043.1-5925 H 1044-59 4U 1053-58
* eta Car A EM* MWC 214 HR 4210 4U 1037-60
* eta Car B 1ES 1043-59.4 IRAS 10431-5925 UCAC4 152-053215
1A 1044-59 0FGL J1045.6-5937 JCMTSE J104503.7-594102 V* eta Car
3A 1042-595 1FGL J1045.2-5942 JCMTSF J104503.7-594102 WDS J10451-5941
1AGL J1043-5936 2FGL J1045.0-5941 JP11 1994 WEB 9578
1AGL J1044-5937 3FGL J1045.1-5941 LLNS 2725 WRAY 15-640
1AGLR J1044-5944 4FGL J1045.1-5940 LS 1868 2XMM J104503.4-594103
ALS 1868 1FHL J1045.0-5943 2MASS J10450360-5941040 XMMU J104503.8-594105
CD-59 3306 2FHL J1045.2-5942 MOST 1042-594 [AMM2003] 50
CEL 3689 3FHL J1045.1-5941 NOVA Car 1843 [ARV2008] 173
Cl Trumpler 16 183 GC 14799 PBC J1044.8-5942 [KRL2007b] 93
CPC 20 3145 GCRV 6693 PPM 339408 [S87b] IRS 23
CPD-59 2620 GCRV 6692 RAFGL 4114 AAVSO 1041-59
CSI-59 2620 41 GPS 1043-595 SAO 238429 Gaia EDR3 5350358584482202880
CSI-59-10431 1H 1045-597 SKY# 20584 Gaia DR2 5350358580171706624
CXOCyg J104503.58-594103.7 HD 93308 SWIFT J1044.8-5941
1E 104306-5925.2 HD 93308B TIC 458859916
2E 2318 Hen 3-481 TYC 8626-2809-1

References (2326 between 1850 and 2022) (Total 2326)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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                Reference summaries :

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Collections of Measurements


velocities : 4    PM : 1    MK : 5   

   

Observing logs


herschel : 44    ISO : 29    IUE : 159    XMM : 14   

   


External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : * eta Car

Link by name to the catalogue in VizieR :

ALS 1868 CD-59 3306 CEL 3689 CPD-59 2620 2E 2318
HD 93308 HD 93308B HR 4210 IRAS 10431-5925 LS 1868
2MASS J10450360-5941040 PPM 339408 RAFGL 4114 SAO 238429 TYC 8626-2809-1
UCAC4 152-053215 V* eta Car WDS J10451-5941 Gaia EDR3 5350358584482202880 Gaia DR2 5350358580171706624

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2022.05.28-11:50:19

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