EPS TAU

Query : EPS TAU
C.D.S. - SIMBAD4 rel 1.7 - 2018.11.18CET06:10:13

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


Basic data :
* eps Tau -- Double or multiple 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:
* (Ref,*,...), ** (CCDM,**,...), IR (IRAS,IRC,...), *iC (Cl*,Cl), UV (TD1)
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) :
04 28 36.9988174 +19 10 49.544603 (Optical) [ 0.23 0.17 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) :
04 25 41.5872789 +19 04 16.447171 [ 19.00 15.00 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) :
177.5963733678 -19.9236596328 [ 0.23 0.17 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 :
106.19 -37.84 [0.38 0.30 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) 38.50 [0.05] / z(spectroscopic) 0.000128 [0.000000] / cz 38.50 [0.05]
   (Opt) A 2015A&A...574A..50J
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):
22.24 [0.25] 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:
G9.5IIICN0.5 B 1989ApJS...71..245K
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 (7) :
U 5.42 [~] C 2002yCat.2237....0D
B 4.54 [~] C 2002yCat.2237....0D
V 3.53 [0.05] C 2009ApJ...694.1085V
G 3.1587 [0.0029] C 2018yCat.1345....0G
J 1.90 [~] C 2002yCat.2237....0D
H 1.314 [0.226] D 2003yCat.2246....0C
K 1.31 [0.05] C 2009ApJ...694.1085V
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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:


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

: 2
The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

: 1
: 995 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (52) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

CCDM J04286+1911A FK5 164 LP 18-640 TD1 3201
* eps Tau GC 5430 2MASS J04283697+1910494 TYC 1273-1104-1
* 74 Tau GCRV 2605 N30 931 UBV 4302
** BUP 61A GEN# +5.20250070 NAME Ain UBV M 10146
** WSI 53 GSC 01273-01104 PLX 987 UBV M 41276
AG+19 352 HD 28305 PLX 987.00 uvby98 520250070
BD+18 640 HIC 20889 PMC 90-93 117 WDS J04286+1911Aa,Ab
Cl* Melotte 25 S 3 HIP 20889 PPM 119934 WDS J04286+1911A
Cl* Melotte 25 MMU 70 HR 1409 RAFGL 4345S WEB 4009
Cl Melotte 25 70 IDS 04228+1858 A ROT 3871 YZ 19 1188
Cl Melotte 25 701 IRAS 04256+1904 SAO 93954 [B10] 1044
CSI+18 640 1 IRC +20080 SKY# 6922 [RSP2011] 357
EPIC 210754593 JP11 4862 SRS 30164 Gaia DR2 48026706557926528

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References (522 between 1850 and 2019) (Total 522)
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


distance : 2    diameter : 2    velocities : 20    ROT : 4    PM : 5    Fe_H : 53    PLX : 4    MK : 23   

   

Observing logs


IUE : 10   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : EPS TAU

Link by name to the catalogue in VizieR :

CCDM J04286+1911A AG+19 352 BD+18 640 FK5 164 GSC 01273-01104
HD 28305 HIC 20889 HIP 20889 HR 1409 IRAS 04256+1904
IRC +20080 2MASS J04283697+1910494 PLX 987 PPM 119934 RAFGL 4345S
SAO 93954 TD1 3201 TYC 1273-1104-1 uvby98 520250070 WDS J04286+1911Aa,Ab
WDS J04286+1911A Gaia DR2 48026706557926528

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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2018.11.18-06:10:13

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