ry tau

Query : ry tau
C.D.S. - SIMBAD4 rel 1.7 - 2018.12.15CET18:32:41

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


Basic data :
V* RY 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,BD,...), IR (AKARI,Elia,...), V* (AN,V*,...), X (2E,XEST,...), ** (**,WDS), SB* (Ref), *iN (VDB), Y*O (Ref), Em* (HBC), TT* (Ref), Or* (Ref), LP* (Ref), Rad (GBS)
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 21 57.4132838427 +28 26 35.533990877 (Optical) [ 0.2102 0.1320 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 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 18 50.8896803611 +28 19 34.919393983 [ 7.0032 4.5519 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) :
169.2550067176296 -14.9398188304044 [ 0.2102 0.1320 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 :
9.100 -25.859 [0.140 0.091 90] A 2016A&A...595A...2G
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) 24.30 [1.9] / z(~) 0.000081 [0.000006] / cz 24.30 [1.90]
   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):
2.2570 [0.2392] 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:
K1IV/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 (9) :
U 10.82 [~] C 2002yCat.2237....0D
B 10.34 [~] C 2002yCat.2237....0D
V 9.30 [~] C 2002yCat.2237....0D
R 9.67 [~] D 2012A&A...543A..59M
I 8.87 [~] D 2012A&A...543A..59M
G 10.6927 [0.0138] C 2018yCat.1345....0G
J 7.155 [0.019] C 2003yCat.2246....0C
H 6.13 [0.06] C 2003yCat.2246....0C
K 5.395 [0.023] 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!).

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

: 1
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
: 1615 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (38) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 283571 GCRV 54984 RAFGL 5120 WEB 3898
** ISM 1 GSC 01828-00129 SSTc2d J042157.4+282635 WISE J042157.40+282635.3
AKARI-IRC-V1 J0421574+282635 HBC 34 SSTtau 042157.4+282635 XEST 21-038
AN 70.1907 HIC 20387 SV* HV 2922 [GBA2007] 844
BD+28 645 HIP 20387 TYC 1828-129-1 [WWV2004] J0421573+282634
2E 986 IRAS 04188+2819 UBV M 28943 AAVSO 0415+28
2E 0418.8+2819 JP11 3792 UCAC2 41665912 Gaia DR1 164551157867546496
Elia 3-2 Kim 3-113 V* RY Tau Gaia DR2 164551162164119424
GBS-VLA J042157.41+282635.3 2MASS J04215740+2826355 VDB 27
GCRV 2521 PDS 8 WDS J04220+2826AB

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References (612 between 1850 and 2019) (Total 612)
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 :

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                 or select by : (not exhaustive, explanation here)


Collections of Measurements


velocities : 6    ROT : 1    PM : 3    PLX : 4    MK : 3    V* : 2   

   

Observing logs


ISO : 1    herschel : 8    IUE : 107   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : ry tau

Link by name to the catalogue in VizieR :

HD 283571 AKARI-IRC-V1 J0421574+282635 BD+28 645 2E 986 GSC 01828-00129
HIC 20387 HIP 20387 IRAS 04188+2819 2MASS J04215740+2826355 RAFGL 5120
TYC 1828-129-1 UCAC2 41665912 V* RY Tau VDB 27 WDS J04220+2826AB
WISE J042157.40+282635.3 Gaia DR1 164551157867546496 Gaia DR2 164551162164119424

Search by coordinates in Vizier (radius: 5 arcsec)


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

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2018.12.15-18:32:41

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