NAME del Lyr Cluster

Query : NAME del Lyr Cluster

Basic data :
NAME del Lyr Cluster -- Open Cluster
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: otypes_help 		OpC (2013A&A,OCl), Cl* (2020A&A,C,...), As* (2019AJ,[KC2019])
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''; as well as Tycho2, UCAC4, and Gaia DR2/3 without proper motions
    • B : 0.01-0.1''; as well as Tycho2 and UCAC4 with proper motions
    • A : Hipparcos and Gaia DR2/3 with proper motions; sometimes VLBI
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) : 		18 54 16.3 +36 53 56 (Optical) [ ] D 2021A&A...647A..19T
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''; as well as Tycho2, UCAC4, and Gaia DR2/3 without proper motions
    • B : 0.01-0.1''; as well as Tycho2 and UCAC4 with proper motions
    • A : Hipparcos and Gaia DR2/3 with proper motions; sometimes VLBI
  • bibcode : bibcode of the coordinates reference
FK5 coord. (ep=J2000 eq=2000) : 		18 54 16.3 +36 53 56 [ ]
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''; as well as Tycho2, UCAC4, and Gaia DR2/3 without proper motions
    • B : 0.01-0.1''; as well as Tycho2 and UCAC4 with proper motions
    • A : Hipparcos and Gaia DR2/3 with proper motions; sometimes VLBI
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) : 		18 52 31.3 +36 50 05 [ ]
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''; as well as Tycho2, UCAC4, and Gaia DR2/3 without proper motions
    • B : 0.01-0.1''; as well as Tycho2 and UCAC4 with proper motions
    • A : Hipparcos and Gaia DR2/3 with proper motions; sometimes VLBI
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) : 		066.9075 +15.3654 [ ]
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 : 		1.110 -3.010 [0.027 0.023 90] C 2020A&A...633A..99C
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) -18.79 [0.57] / z(spectroscopic) -0.000063 [0.000002] / cz -18.79 [0.57]
   (Opt) A 2021A&A...647A..19T
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): 		2.779 [0.007] C 2020A&A...633A..99C
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality →E=worst quality, ∼ =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin): 		29.9 29.9 0 (Opt) D 2020A&A...633A..99C
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 (2) :
B 4.58 [~] E ~
V 3.8 [~] E ~
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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 ) :

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

: 104 		Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (7) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NAME del Lyr Cluster Cl Stephenson 1 [KC2019] Theia 73 [KPS2012] MWSC 3018
C 1851+368 OCl 137.0 [KPR2004b] 456

References (36 between 2020 and 2025) (Total 87)
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 Description of Measurements

Velocities : 6    Distance : 5    Fe/H : 3    Plx : 6    PM : 7   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

Velocities (6) 

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date |        Rem.        |Or|     Reference     |
 -------------------------------------------------------------------------------------------------------------------
 |v  |  -19.593301    2.74633|C (    )|s , ,Opt ,           |          |                    |  |2022A&A...668A...4F|

Distance (5) 

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |  343.0     pc  |                       |paral   |2021A&A...651A.104P|

Fe/H (3) 

 | Teff  log.g | Fe_H   c|CompStar |CatNo|     Reference     |
 -------------------------------------------------------------
 |             | 0.201   |SUN      |     |2022A&A...668A...4F|

Plx (6) 

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
 |   2.803   :   0.0430     |2021A&A...651A.104P|

PM (7) 

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |   +1.165[    0.193]|   -3.025[    0.173]|    |2021A&A...651A.104P|

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