* del03 Tau

Query : * del03 Tau

Basic data :
* del03 Tau -- alpha2 CVn Variable
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: 		* (2011A&A,*,...), ** (**,ADS,...), X (2E,1RXS,...), a2* (2003AstL), PM* (2002A&A), V* (V*), 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) : 		04 25 29.3847186643 +17 55 40.463442784 (Optical) [ 0.1208 0.0649 90 ] A 2020yCat.1350....0G
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) : 		04 22 35.5856713252 +17 48 54.528396770 [ 0.1208 0.0649 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) : 		178.1177433133560 -21.2947426765568 [ 0.1208 0.0649 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 : 		107.316 -31.000 [0.193 0.136 90] A 2020yCat.1350....0G
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) 39.418 [0.0011] / z(spectroscopic) 0.000131 [0.000000] / cz 39.42 [0.00]
   (Opt) A 2018A&A...616A...7S
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): 		21.0865 [0.1381] A 2020yCat.1350....0G
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: 		A2IV-Vs C 1987ApJS...65..581G
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) :
B 4.369 [0.004] D 2011A&A...531A..92R
V 4.298 [0.004] D 2011A&A...531A..92R
R 6.18 [0.54] E 2012yCat.1322....0Z
G 4.295662 [0.002933] C 2020yCat.1350....0G
I 4.24 [0.03] D 2011MNRAS.415..854D
J 4.34 [0.32] D 2003yCat.2246....0C
H 4.381 [0.238] D 2003yCat.2246....0C
K 4.098 [0.029] C 2003yCat.2246....0C
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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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

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

: 2 : 3143 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (55) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* 68 Tau CSI+17 719 1 IRAS 04226+1748 TYC 1269-1246-1
* 68 Tau A 2E 1026 JP11 4844 UBV 4263
* del03 Tau A 2E 0422.6+1748 2MASS J04252936+1755404 UBV M 41262
* del03 Tau GC 5354 N30 917 UCAC4 540-009256
** KUI 17A GCRV 2567 PLX 974.09 uvby98 520250056
ADS 3206 A GEN# +5.20250056 PLX 974.08 V* V776 Tau
AG+17 389 GES J04252949+1755399 PPM 119872 WDS J04255+1756A
AKARI-IRC-V1 J0425294+175540 GSC 01269-01246 Renson 7160 WEB 3959
BD+17 719 HD 27962A ROT 3861 YZ 17 1170
CCDM J04255+1755A HD 27962 1RXS J042528.4+175512 [RSP2011] 312
Cl* Melotte 25 S 31 HIC 20648 SAO 93923 [TSA98] J042530.70+175500.39
Cl* Melotte 25 VA 355 HIP 20648 SKY# 6822 Gaia DR3 3314063977537054208
Cl Melotte 25 56 HR 1389 TD1 3149 Gaia DR2 3314063977537054208
Cl Melotte 25 561 IDS 04197+1742 A TIC 17409896

References (407 between 1850 and 2024) (Total 407)
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 : 13    distance : 2    ROT : 8    Fe_H : 17    PLX : 6    PM : 7    MK : 17   

   

Observing logs


IUE : 7   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : * del03 Tau

Link by name to the catalogue in VizieR :

AG+17 389 AKARI-IRC-V1 J0425294+175540 BD+17 719 CCDM J04255+1755A 2E 1026
GSC 01269-01246 HD 27962A HD 27962 HIC 20648 HIP 20648
HR 1389 IRAS 04226+1748 2MASS J04252936+1755404 PPM 119872 1RXS J042528.4+175512
SAO 93923 TD1 3149 TYC 1269-1246-1 UCAC4 540-009256 uvby98 520250056
V* V776 Tau WDS J04255+1756A Gaia DR3 3314063977537054208 Gaia DR2 3314063977537054208

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