CDS

V* T Tau

Query : V* T Tau
C.D.S. - SIMBAD4 rel 1.7 - 2019.09.20CEST10:34:13

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

Basic data :
V* T Tau -- T Tau-type 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: 		* (HD,AG,...), X (Ref,1E,...), IR (AKARI,IRAS,...), V* (V*,AAVSO), ** (WDS), HH (HH), *iN (VDB), Y*O (Ref), Em* (HBC), TT* (Ref), Or* (Ref), Rad (GBS), UV (XEST)
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 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 21 59.4323326335 +19 32 06.439974179 (Optical) [ 0.0593 0.0288 90 ] A 2018yCat.1345....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] : coordinates error major axis, minor axis (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 19 04.2111829060 +19 25 05.750778998 [ 0.0593 0.0288 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 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) : 		176.2297001916560 -20.8868264521615 [ 0.0593 0.0288 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 : 		11.356 -14.837 [0.122 0.100 90] A 2018yCat.1345....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) 23.90 [1.5] / z(~) 0.000080 [0.000005] / cz 23.90 [1.50]
   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): 		6.9290 [0.0583] A 2018yCat.1345....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: 		K0IV/Ve C 1977ApJ...214..747H
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) :
B 11.01 [0.07] D 2000A&A...355L..27H
V 9.30 [~] C 2002yCat.2237....0D
R 9.80 [~] E 2003yCat.1289....0Z
G 9.6270 [0.0027] C 2018yCat.1345....0G
J 7.240 [0.023] C 2003yCat.2246....0C
H 6.237 [0.017] C 2003yCat.2246....0C
K 5.325 [0.017] C 2003yCat.2246....0C
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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

: 2 		: 2537 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (41) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 284419 HH 355 TYC 1272-470-1 XEST 01-045
AG+19 341 HIC 20390 UBV M 28947 2XMM J042159.4+193206
AKARI-IRC-V1 J0421594+193205 HIP 20390 UCAC2 38742060 [ABG2007] 473
BD+19 706 IRAS 04190+1924 uvby98 100284419 ABV [D98] 34
1E 0419.0+1925 JP11 3794 V* T Tau [GBA2007] 854
2E 990 2MASS J04215943+1932063 VDB 28 AAVSO 0416+19
2E 0419.0+1925 PLX 961.01 WDS J04220+1932AB Gaia DR2 48192969034959232
EPIC 210777987 PPM 119824 WEB 3899 Gaia DR1 48192969034959232
GBS-VLA J042159.43+193205.7 PSCz P04190+1924 WISE J042159.44+193205.9
GCRV 2524 RAFGL 5121 WISE J042159.45+193205.9
HBC 35 1RXS J042200.5+193209 XEST 01-OM-039

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References (1233 between 1850 and 2019) (Total 1233)
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 :

                from: to:

                 or select by : (not exhaustive, explanation here)

Collections of Measurements


distance : 1    velocities : 5    PM : 4    PLX : 4    MK : 4    V* : 1   

   

Observing logs


ISO : 17    XMM : 1    herschel : 12    IUE : 45   

   

External archives :

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

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

Link by name to the catalogue in VizieR :

HD 284419 AG+19 341 AKARI-IRC-V1 J0421594+193205 BD+19 706 2E 990
HIC 20390 HIP 20390 IRAS 04190+1924 2MASS J04215943+1932063 PPM 119824
RAFGL 5121 1RXS J042200.5+193209 TYC 1272-470-1 UCAC2 38742060 uvby98 100284419 ABV
V* T Tau VDB 28 WDS J04220+1932AB WISE J042159.44+193205.9 WISE J042159.45+193205.9
Gaia DR2 48192969034959232 Gaia DR1 48192969034959232

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

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2019.09.20-10:34:13

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