CDS

Achernar

Query : Achernar

Basic data :
* alf Eri -- 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,...), V* (NSV,V*), Be* (1982IAUS), Em* (EM*), HV* (2012NewAR), Ro* (2019ApJ), X (2XMM), UV (TD1), NIR (2MASS), IR (IRAS)
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) : 		01 37 42.84548 -57 14 12.3101 (Optical) [ 5.09 4.40 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] : 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
FK5 coord. (ep=J2000 eq=2000) : 		01 37 42.84474 -57 14 12.3100 [ 5.09 4.40 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
FK4 coord. (ep=B1950 eq=1950) : 		01 35 51.31766 -57 29 24.9134 [ 5.09 4.40 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) : 		290.84124169 -58.79200969 [ 5.09 4.40 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 : 		87.00 -38.24 [0.58 0.50 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) 18.60 [3] / z(~) 0.000062 [0.000010] / cz 18.60 [3.00]
   C 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): 		23.39 [0.57] 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: 		B6Vpe 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 (8) :
U -0.36 [~] C 2002yCat.2237....0D
B 0.30 [~] C 2002yCat.2237....0D
V 0.46 [~] C 2002yCat.2237....0D
R 0.49 [~] C 2002yCat.2237....0D
I 0.60 [~] C 2002yCat.2237....0D
J 0.80 [~] C 2002yCat.2237....0D
H 0.85 [~] C 2002yCat.2237....0D
K 0.88 [~] C 2002yCat.2237....0D
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!). sed-help-icon
Some important notes on this object about identifications and objects associations.
notes:

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (37) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* alf Eri GSC 08478-01395 NSV 15353 UBV 1700
ALS 16724 HD 10144 PLX 344 UBV M 8330
CD-57 316 HIC 7588 PLX 344.00 uvby98 100010144
CPC 20 447 HIP 7588 PPM 331199 V* alf Eri
CPD-57 334 HR 472 ROT 233 WEB 1623
EM* CDS 176 IRAS 01358-5729 SAO 232481 2XMM J013742.5-571413
FK5 54 JP11 517 SKY# 2444 [JE82] 39
GC 1979 2MASS J01374284-5714119 TD1 938
GCRV 916 N30 335 TIC 230981971
GEN# +1.00010144 NAME Achernar TYC 8478-1395-1

References (43 between 2018 and 2023) (Total 469)
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 : 5    ROT : 1    Fe_H : 2    PLX : 3    PM : 4    MK : 13   

   

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 (5) 

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 ------------------------------------------------------------------------------------------------------
 |v  |   16.0                |  (  10)|s , ,    ,           |          |       |  |1995A&AS..114..269D|

rot (1) 

 |  Vsini  [  err   ] (mes)|Q|     reference     |
 -------------------------------------------------
 | 260     [        ] (   )| |2020MNRAS.493.2528B|

fe_h (2) 

 | Teff  log.g | Fe_H  c|CompStar |CatNo|     Reference     |
 ------------------------------------------------------------
 | 20230 3.50  |        |         |     |2001A&A...378..861C|

plx (3) 

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
m|  22.68    :   0.57       |1997A&A...323L..49P|

pm (4) 

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |  +87.00 [    0.58 ]|  -38.24 [    0.50 ]|ICRS|2007A&A...474..653V|

mk (13) 

 |ds/mss|           Spectral type            |     reference     |
 -----------------------------------------------------------------
 |  /   |B5                                  |1993yCat.3135....0C|
Observing logs


ISO : 8    IUE : 11   

   

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 (8)

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[image] (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     0.003  17902503  SWS01    2.38   45.21  Alpha Eri                       1996-05-14T12:57:39   1062      7077  33"x20"             024.4285  -57.2367      SPRICE   +    STARTYP1
    2     0.004  75000516  PHT03    8.33   28.38  Alfa Eri                        1997-12-04T15:36:37    304     31483  52" D               024.4286  -57.2367      NTRAMS   +    BEPHOTO 
    3     0.004  75000517  PHT22   54.76  116.92  Alfa Eri                        1997-12-04T15:42:29   1258     31484  227"x227"           024.4286  -57.2367      NTRAMS   +    BEPHOTO 
    4     0.004  75000518  PHT22  128.33  202.26  Alfa Eri                        1997-12-04T16:04:19   1018     31485  273"x273"           024.4286  -57.2367      NTRAMS   +    BEPHOTO 
    5     0.009  17902614  SWS02    2.61   27.99  Alf Eri                         1996-05-14T13:16:03   1830      7078  27"x20"             024.4285  -57.2366      RWATERS  +    BESTARS 
    6     0.009  17902615  PHT40    2.47    8.95  Alf Eri                         1996-05-14T13:47:17    140      7079  24"x24"             024.4285  -57.2366      RWATERS  +    BESTARS 
    7     0.018  90000101  SWS99   -1.00   -1.00  Alp Eri B3Vpe                   1998-05-03T05:13:37   2352     36653  14"x20"             024.4288  -57.2365      SWS_CAL       6999IG02
    8     0.121  88001701  SWS99   -1.00   -1.00  Alp Eri B3Vpe                   1998-04-13T19:05:25   2352     36429  14"x20"             024.4248  -57.2366      SWS_CAL       6999IA02

iue (11) 

 |Homogenized Name:  ComplID   |PROG |CL|D CAM IMAGE A| FES  MD|Obs.da  Time |ExpTim|m|CEB|S|      Comments      |F|     reference     |
 ---------------------------------------------------------------------------------------------------------------------------------------
 |HD 10144        :            |PHCAL|21|H SWP 45269 L|12495 FU|920803 104000|000003| |402|G|C=175,B=32          |*|1996IUEML.C......0I|

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Achernar

Link by name to the catalogue in VizieR :

ALS 16724 CD-57 316 CPD-57 334 FK5 54 GSC 08478-01395
HD 10144 HIC 7588 HIP 7588 HR 472 IRAS 01358-5729
2MASS J01374284-5714119 NSV 15353 PLX 344 PPM 331199 SAO 232481
TD1 938 TYC 8478-1395-1 uvby98 100010144 V* alf Eri

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 .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

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2023.09.24-12:48:04

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