Alcyone

Query : Alcyone C.D.S. - SIMBAD4 rel 1.225 - 2015.08.03CEST06:37:32

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


Basic data :
* eta Tau -- 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:
Be* (), * (*,AG,ALS,BD,FK5,GC​,GCRV,GEN#,GSC,HD​,HGAM,HIC,HIP,HR​,JP11,N30,PLX,PMC​,PPM,ROT,SAO,SKY#​,SRS,TYC,UBV,uvby98,XZ,[B10],[JE82]), ** (**,BDS,CCDM,IDS,WDS), IR (IRAS,IRC,2MASS,[KSP2003]), *iC (Cl*,Cl), *iN (VDB), Em* (EM*), UV (CEL), X (1E)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
03 47 29.07655 +24 06 18.4883 ( Optical ) [ 3.43 2.90 104 ] A 2007A&A...474..653V
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
03 47 29.077 +24 06 18.49 [ 3.43 2.90 104 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
03 44 30.42 +23 57 07.5 [ 19.72 16.85 180 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
166.6683 -23.4552 [ 3.43 2.90 104 ]
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 :
19.34 -43.67 [0.39 0.33 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) 5.40 [1.2] / z(~) 0.000018 [0.000004] / cz 5.40 [1.20]   (~) 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:
8.09 [0.42] A 2007A&A...474..653V
Spectral type is made of 3 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
  • bibcode : bibcode of the spectral type reference
Spectral type:
B7III C ~
Syntax of fluxes (or magnitudes) is : "filter-name flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, J, H, K, u, g, r, i, z
  • 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 2.44 [~] C 2002yCat.2237....0D
B 2.78 [~] C 2002yCat.2237....0D
V 2.87 [~] C 2002yCat.2237....0D
R 2.84 [~] C 2002yCat.2237....0D
I 2.88 [~] C 2002yCat.2237....0D
J 2.94 [~] C 2002yCat.2237....0D
H 2.97 [~] C 2002yCat.2237....0D
K 2.94 [~] C 2002yCat.2237....0D
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VizieR photometry viewer    sed-help-icon
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!).

Some important notes on this object about identifications and objects associations.
essential notes:
  • also RfN VDB 23


The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (57) :

NAME ALCYONE Cl* Melotte 22 TRU 414 HR 1165 TYC 1800-2202-1
* eta Tau Cl* Melotte 22 WCZ 236 IDS 03415+2348 A UBV 3639
* 25 Tau Cl* Melotte 22 HII 1432 IRAS 03445+2357 uvby98 520221432
** STF 4008A Cl Melotte 22 1432 IRC +20063 VDB 23
** STFA 8A 1E 0344.5+2357 JP11 4669 WDS J03475+2406A
AG+23 323 EM* MWC 74 JP11 4680 XZ 4911
ALS 15094 FK5 139 2MASS J03472908+2406184 [B10] 869
BD+23 541 GC 4541 N30 776 [JE82] 124
BDS 1875 A GCRV 2135 PLX 821 [KSP2003] G166.6680-23.4550
CCDM J03474+2407A GEN# +5.20221432 PMC 90-93 100 [KSP2003] J034729.04+240619.4
CEL 344 GSC 01800-02202 PPM 92898 [SCG94] O 165
Cl* Melotte 22 K 60 HD 23630 ROT 3785 [SCG94] X 180
Cl* Melotte 22 VM 32 HGAM 274 SAO 76199
Cl* Melotte 22 MSH 194 HIC 17702 SKY# 5771
Cl* Melotte 22 MSK 141 HIP 17702 SRS 30139

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References (467 between 1850 and 2015)
Simbad bibliographic survey began in 1950 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

from: to:

                                  Sort reference summaries by : (not exhaustive, explanation here)

                                 


Measurements (20 types) :


CEL : 1    Einstein : 1    Hbet1 : 7    HGAM : 1    IRAS : 1    IRC : 1    ISO : 3    IUE : 54    JP11 : 3    MK : 21    oRV : 9    PLX : 4   
PM : 4    pos : 4    posa : 1    ROT : 3    SAO : 1    UBV : 12    uvby1 : 7    velocities : 10   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database

Catalogue information from VizieR :

Generic search by coordinates (radius: 5 arcsec)

AG+23 323 ALS 15094 BD+23 541 CCDM J03474+2407A FK5 139
GSC 01800-02202 HD 23630 HIC 17702 HIP 17702 HR 1165
IRAS 03445+2357 IRC +20063 2MASS J03472908+2406184 PPM 92898 SAO 76199
TYC 1800-2202-1 VDB 23 WDS J03475+2406A

Annotations :
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The list of all annotations to SIMBAD objects can be found here .

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2015.08.03-06:37:32

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