*etaTau

Query : *etaTau
C.D.S. - SIMBAD4 rel 1.7 - 2018.12.19CET11:57:43

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,...), ** (**,BDS,...), IR (IRAS,IRC,...), *iC (Cl*,Cl), *iN (VDB), Em* (EM*), PM* (Ref), UV (CEL), X (1E)
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) :
03 47 29.0765529 +24 06 18.488347 (Optical) [ 0.39 0.25 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
FK4 coord. (ep=B1950 eq=1950) :
03 44 30.4223001 +23 57 07.541785 [ 19.50 16.50 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
Gal coord. (ep=J2000) :
166.6682509629 -23.4552176355 [ 0.39 0.25 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 :
19.34 -43.67 [0.39 0.33 90] 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: %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:
B7III C ~
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 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
G 2.7730 [0.0052] C 2018yCat.1345....0G
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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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.
notes:

  • also RfN VDB 23


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

: 2 : 3754 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (60) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NAME Alcyone Cl* Melotte 22 TRU 414 HIP 17702 SRS 30139
* eta Tau Cl* Melotte 22 WCZ 236 HR 1165 TYC 1800-2202-1
* 25 Tau Cl* Melotte 22 HII 1432 IDS 03415+2348 A UBV 3639
** STF 4008A Cl Melotte 22 1432 IRAS 03445+2357 uvby98 520221432
** STFA 8A 1E 0344.5+2357 IRC +20063 VDB 23
AG+23 323 EM* MWC 74 JP11 4669 WDS J03475+2406A
ALS 15094 EPIC 200007767 JP11 4680 WEB 3382
BD+23 541 FK5 139 2MASS J03472908+2406184 XZ 4911
BDS 1875 A GC 4541 N30 776 [B10] 869
CCDM J03474+2407A GCRV 2135 PLX 821 [JE82] 124
CEL 344 GEN# +5.20221432 PMC 90-93 100 [KSP2003] G166.6680-23.4550
Cl* Melotte 22 K 60 GSC 01800-02202 PPM 92898 [KSP2003] J034729.04+240619.4
Cl* Melotte 22 VM 32 HD 23630 ROT 3785 [SCG94] O 165
Cl* Melotte 22 MSH 194 HGAM 274 SAO 76199 [SCG94] X 180
Cl* Melotte 22 MSK 141 HIC 17702 SKY# 5771 Gaia DR2 66714384141781760

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References (497 between 1850 and 2019) (Total 497)
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 : 11    ROT : 5    PM : 6    Fe_H : 1    PLX : 3    MK : 21   

   

Observing logs


ISO : 3    IUE : 54   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : *etaTau

Link by name to the catalogue in VizieR :

AG+23 323 ALS 15094 BD+23 541 CCDM J03474+2407A CEL 344
FK5 139 GSC 01800-02202 HD 23630 HIC 17702 HIP 17702
HR 1165 IRAS 03445+2357 IRC +20063 2MASS J03472908+2406184 PLX 821
PPM 92898 SAO 76199 TYC 1800-2202-1 uvby98 520221432 VDB 23
WDS J03475+2406A Gaia DR2 66714384141781760

Search by coordinates in Vizier (radius: 5 arcsec)


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

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2018.12.19-11:57:43

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