CDS

M45

Query : M45

Basic data :
Cl Melotte 22 -- 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: 		OpC (2013A&A,OCl), Cl* (2020A&A,C,...), As* (2019AJ,[KC2019]), X (H)
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) : 		03 46 24.2 +24 06 50 (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"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK5 coord. (ep=J2000 eq=2000) : 		03 46 24.2 +24 06 50 [ ]
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) : 		03 43 25.7 +23 57 36 [ ]
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) : 		166.4628 -23.6146 [ ]
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 : 		19.997 -45.548 [0.127 0.101 90] B 2018A&A...616A..10G
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) 5.88 [0.03] / z(spectroscopic) 0.000020 [0.000000] / cz 5.88 [0.03]
   (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): 		7.364 [0.005] B 2018A&A...616A..10G
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): 		76.86 76.86 ~ (Opt) C 2021MNRAS.504..356D
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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sedIcon
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

: 5685 		Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (10) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

M 45 H 0346+24 OCl 421.0 [KPS2012] MWSC 0305
C 0344+239 NAME Pleiades [KC2019] Theia 369
Cl Melotte 22 NAME Seven Sisters [KPR2004b] 47

References (657 between 2018 and 2023) (Total 3360)
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


velocities : 9    distance : 7    Fe_H : 7    PLX : 8    PM : 9   

   

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 (9) 

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 ------------------------------------------------------------------------------------------------------
 |v  |    5.88        0.03   |A ( 436)|s , ,Opt ,           |          |       |  |2021A&A...647A..19T|

distance (7) 

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |    0.135   kpc |  -0.004      +0.004   |        |2021MNRAS.503.3279S|

fe_h (7) 

 | Teff  log.g | Fe_H  c|CompStar |CatNo|     Reference     |
 ------------------------------------------------------------
 |             |-0.010  |SUN      |     |2021MNRAS.503.3279S|

plx (8) 

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
 |   7.353   :   0.200      |2021MNRAS.503.3279S|

pm (9) 

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |  +19.998[    1.076]|  -45.530[    1.148]|    |2021MNRAS.503.3279S|
Observing logs


ISO : 23    XMM : 4   

   

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)

iso (23)

The 2 columns in color are computed by VizieR, and are not part of the original data.
Note: Quick-look images of the data, and specific documentation, are accessible by clicking on the TDT observation identifier
VI/111/isolog
Post annotation 		ISO Observation Log (ISO Data Centre, 2004) [ReadMe+ftp]

*The ISO Observation Log[image] (36737 rows) (Note)		img(gal)
start AladinLite 
 Full      _r        TDT    AOT    minLam  maxLam  Target                                 oStart         oLen    recno   FOV                  RAJ2000   DEJ2000 cal  ObsID    abs  PropID  
        arcmin                      um      um                                             s             s                                     deg       deg                              


    1    15.988  66100808  CAM01    5.05    8.35  PLEIADES 61                     1997-09-07T04:06:52    886     27903  216"x240"           056.3466  +23.9835      GRIEKE   +    BRNDWRF2
    2    15.997  81700510  CAM01    5.05    8.35  PLEIADES 61                     1998-02-09T12:13:34   2158     34015  216"x240"           056.3464  +23.9835      GRIEKE   +    BRNDWRF 
    3    16.364  66100709  CAM01    5.05    8.35  PLEIADES 72                     1997-09-07T03:12:44    888     27902  216"x240"           056.3532  +23.9618      GRIEKE   +    BRNDWRF2
    4    16.373  83002611  CAM01    5.05    8.35  PLEIADES 72                     1998-02-22T19:16:59   2160     34528  216"x240"           056.3530  +23.9618      GRIEKE   +    BRNDWRF 
    5    19.710  65903203  CAM01    5.05   17.05  PLEIADES 22                     1997-09-05T12:05:00    822     27704  108"x120"           056.2740  +23.9771      GRIEKE   +    BRNDWRF2
    6    19.720  81700404  CAM01    5.05    8.35  PLEIADES 22                     1998-02-09T11:38:48   2032     34014  108"x120"           056.2738  +23.9771      GRIEKE   +    BRNDWRF 
    7    24.974  66800203  CAM01    5.05    8.35  PLEIADES 16                     1997-09-13T19:10:33   1372     28165  216"x240"           056.1653  +23.9917      GRIEKE   +    BRNDWRF 
    8    24.980  66700902  CAM01    5.05    8.35  PLEIADES 16                     1997-09-13T02:06:22    526     28152  216"x240"           056.1652  +23.9917      GRIEKE   +    BRNDWRF2
    9    27.316  66100901  CAM01    5.05    8.35  PLEIADES 14                     1997-09-07T04:22:40    520     27904  108"x120"           056.1726  +23.8814      GRIEKE   +    BRNDWRF2
   10    27.330  80805002  CAM01    5.05    8.35  PLEIADES 14                     1998-02-01T02:49:33   1366     33681  108"x120"           056.1723  +23.8814      GRIEKE   +    BRNDWRF 
   11    29.515  81701205  CAM01    3.98    8.35  PLEI_5                          1998-02-09T22:25:48   3319     34033  672"x624"           057.0933  +23.9146      ISTEELE  +    IST_PLE2
   12    31.024  81700904  CAM01    3.98    6.59  PLEI_F                          1998-02-09T17:34:14   3318     34028  672"x624"           056.9923  +23.7406      ISTEELE  +    IST_PLE2
   13    36.159  81501301  CAM01    3.98    8.35  PLEI_6                          1998-02-08T01:27:56   3318     33972  672"x624"           057.1045  +24.5047      ISTEELE  +    IST_PLE2
   14    37.579  66100505  CAM01    5.05    8.35  PLEIADES 35                     1997-09-07T00:26:37    708     27895  216"x240"           057.1777  +24.4545      GRIEKE   +    BRNDWRF2
   15    37.582  81701406  CAM01    5.05    8.35  PLEIADES 35                     1998-02-09T23:54:17   1858     34035  216"x240"           057.1777  +24.4546      GRIEKE   +    BRNDWRF 
   16    38.035  65202307  CAM01    5.05    8.35  PLEIADES 55                     1997-08-29T12:17:04    706     27433  216"x240"           057.0994  +24.5563      GRIEKE   +    BRNDWRF2
   17    38.035  81500809  CAM01    5.05    8.35  PLEIADES 55                     1998-02-07T18:35:20   1858     33957  216"x240"           057.0993  +24.5564      GRIEKE   +    BRNDWRF 
   18    38.487  81701002  CAM01    3.98   17.05  PLEI_16                         1998-02-09T19:13:04   3318     34029  672"x624"           057.0009  +24.6420      ISTEELE  +    IST_PLE2
   19    39.853  65202206  CAM01    5.05    8.35  PLEIADES 43                     1997-08-29T12:04:24    706     27432  216"x240"           057.1432  +24.5580      GRIEKE   +    BRNDWRF2
   20    39.857  81701307  CAM01    5.05    8.35  PLEIADES 43                     1998-02-09T23:22:23   1858     34034  216"x240"           057.1432  +24.5581      GRIEKE   +    BRNDWRF 
   21    41.387  65202404  CAM01    5.05    8.35  PLEIADES 34                     1997-08-29T12:29:44    708     27434  216"x240"           057.1861  +24.5517      GRIEKE   +    BRNDWRF2
   22    41.387  67200705  CAM01    5.05    8.35  PLEIADES 34                     1997-09-18T03:32:12   1858     28291  216"x240"           057.1861  +24.5517      GRIEKE   +    BRNDWRF 
   23    42.469  81501203  CAM01    3.98    8.35  PLEI_4                          1998-02-08T00:31:20   3318     33971  672"x624"           057.2278  +23.6985      ISTEELE  +    IST_PLE2

xmm (4)

The 3 columns in color are computed by VizieR, and are not part of the original data.
B/xmm/xmmlog
Post annotation 		XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2012) [ReadMe+ftp]
2002yCat....102009X

The XMM-Newton Observation log (2023-09-18)[image/fits] (17196 rows)		img(gal)
start AladinLite 
 Full      _r        Obsno     PropDate   Object                           RAJ2000    DEJ2000           Obs0          ObsDur Image  PPSp   FITS XSAlink
        arcmin                    s                                         deg        deg              s              s                             


    1   19.8982  0094780201  2002-09-04  Pleiades-1                      056.82500  +24.37528  2000-08-31T20:47:10    20361 N      PPSp  0094780201 Y
    2   19.8982  0094780101  2002-09-04  Pleiades-1                      056.82500  +24.37528  2000-09-01T02:28:06    51062 FITS       PPSp  0094780101 Y
    3   51.5619  0112390101  2003-05-03  Pleiades                        055.93334  +24.72139  2000-09-01T18:39:51    61611 FITS       PPSp  0112390101 Y
    4   51.5619  0112390201  2003-05-03  Pleiades                        055.93334  +24.72139  2000-09-02T11:49:23     5913 N      PPSp  0112390201 Y

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : M45

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 .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

display existing annotations (1)

add an annotation to this object

report an error concerning the data of this object

2023.09.28-10:06:49

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