eta Cen

C.D.S. - SIMBAD4 rel 1.7 - 2018.12.18CET17:35:57

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations


Basic data :
* eta Cen -- Be 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:
* (*,ALS,...), IR (AKARI,IRAS,...), V* (V*,AAVSO), UV (EUVE,TD1), Be* (Ref), Em* (EM*)
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
14 35 30.4241610 -42 09 28.170782 (Optical) [ 0.17 0.11 90 ] A 2007A&A...474..653V
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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
FK5 coord. (ep=J2000 eq=2000) :
14 35 30.4241610 -42 09 28.170782 [ 0.17 0.11 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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
14 32 19.3072255 -41 56 21.745745 [ 11.50 9.00 0 ]
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
322.7739976870 +16.6691378062 [ 0.17 0.11 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 :
-34.73 -32.72 [0.23 0.18 0] A 2007A&A...474..653V
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) 0.00 [1.6] / z(~) 0.000000 [0.000005] / cz 0.00 [1.60]
   B 2006AstL...32..759G
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas):
10.67 [0.21] A 2007A&A...474..653V
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:
B2Ve C 2006MNRAS.371..252L
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 1.30 [~] C 2002yCat.2237....0D
B 2.12 [~] C 2002yCat.2237....0D
V 2.31 [~] C 2002yCat.2237....0D
R 2.41 [~] C 2002yCat.2237....0D
I 2.59 [~] C 2002yCat.2237....0D
G 2.2547 [0.0159] C 2018yCat.1345....0G
J 2.84 [~] C 2002yCat.2237....0D
H 2.91 [~] C 2002yCat.2237....0D
K 2.96 [~] C 2002yCat.2237....0D
SIMBAD with radius arcmin
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within radius 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!).

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 1120 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (39) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* eta Cen GC 19656 JP11 2516 UBV M 20238
AKARI-IRC-V1 J1435304-420928 GCRV 8493 2MASS J14353043-4209281 uvby98 100127972
AKARI-FIS-V1 J1435303-420930 GEN# +1.00127972 N30 3301 V* eta Cen
ALS 15000 GSC 07814-03706 PPM 319680 WEB 12321
CD-41 8917 HD 127972 ROT 2088 [B10] 3724
CPC 0 12445 HD 127973 SAO 225044 [CS62] E6 83
CPD-41 6839 HIC 71352 SKY# 26543 [JE82] 735
EM* MWC 232 HIP 71352 TD1 17567 AAVSO 1429-41
EUVE J1435-42.2 HR 5440 TYC 7814-3706-1 Gaia DR2 6103094140452223872
FK5 537 IRAS 14323-4156 UBV 12728

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References (19 between 2014 and 2019) (Total 315)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)


Collections of Measurements


velocities : 9    ROT : 2    PM : 4    Fe_H : 2    PLX : 2    MK : 10   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

velocities (9)

 |typ|    Value    R   m.e.   |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 -------------------------------------------------------------------------------------------------------
 |v  |   -0.2                 |  (   7)|s , ,    ,           |          |       |  |1995A&AS..114..269D|
 

rot (2)

 |  Vsini  [  err   ] (mes)|Q|     reference     |
 -------------------------------------------------
 | 300     [        ] (   )|D|1970CoKwa.189....0U|
 

pm (4)

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |  -34.73 [    0.23 ]|  -32.72 [    0.18 ]|ICRS|2007A&A...474..653V|
 

fe_h (2)

 |Teff  log.g | Fe_H  c|CompStar |CatNo|     Reference     |
 -----------------------------------------------------------
 |22336 4.09  |        |SUN      |     |2001A&A...378..861C|
 

plx (2)

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
 |  10.57    :   0.83       |1997A&A...323L..49P|
 

mk (10)

 |ds/mss|           Spectral type            |     reference     |
 -----------------------------------------------------------------
 |  /   |B2Ve                                |2006MNRAS.371..252L|
 
Observing logs


ISO : 2    IUE : 50   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

iso (2)

The 2 columns in color are computed by VizieR, and are not part of the original data.
Note: Quick-look images of the data, and specific documentation, are accessible by clicking on the TDT observation identifier
VI/111/isolog
Post annotation
ISO Observation Log (ISO Data Centre, 2004) [ReadMe+ftp]

*The ISO Observation Log (36737 rows) (Note)
img(gal)
start AladinLite

Full _r TDT AOT minLam maxLam Target oStart oLen recno FOV RAJ2000 DEJ2000 cal ObsID abs PropID arcmin um um s s deg deg
1 0.031 09502608 SWS02 2.61 26.18 Eta Cen 1996-02-20T17:06:14 1730 3228 27"x14" 218.8761 -42.1577 RWATERS + BESTARS 2 0.035 09502609 PHT40 2.47 8.95 Eta Cen 1996-02-20T17:35:48 140 3229 24"x24" 218.8760 -42.1577 RWATERS + BESTARS

iue (50)

 |Homogenized Name:  ComplID   |PROG |CL|D CAM IMAGE A| FES  MD|Obs.da  Time |ExpTim|m|CEB|S|      Comments      |F|     reference     |
 ---------------------------------------------------------------------------------------------------------------------------------------
 |HD 127972       :            |HSGCG|26|L LWP 04019 S| 2702 FU|840818 095500|000005| |X03|G|C=3X,B=48           |*|1996IUEML.C......0I|
 

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : eta Cen

Link by name to the catalogue in VizieR :

AKARI-IRC-V1 J1435304-420928 AKARI-FIS-V1 J1435303-420930 ALS 15000 CD-41 8917 CPD-41 6839
EUVE J1435-42.2 FK5 537 GSC 07814-03706 HD 127972 HD 127973
HIC 71352 HIP 71352 HR 5440 IRAS 14323-4156 2MASS J14353043-4209281
PPM 319680 SAO 225044 TD1 17567 TYC 7814-3706-1 uvby98 100127972
V* eta Cen Gaia DR2 6103094140452223872

Search by coordinates in Vizier (radius: 5 arcsec)


Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
The list of all annotations to SIMBAD objects can be found here .

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2018.12.18-17:35:57

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