alf CMa

Query : alf CMa
C.D.S. - SIMBAD4 rel 1.7 - 2019.12.12CET17:03:39

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


Basic data :
* alf CMa -- Spectroscopic binary
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:
* (*,BD,...), PM* (Ci,LFT,...), ** (**,ADS,...), IR (AKARI,IRAS,...), UV (CEL,TD1), SB* (SBC7,SBC9), V* (NSV), FIR (Ref)
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) :
06 45 08.91728 -16 42 58.0171 (Optical) [ 11.70 10.90 90 ] A 2007A&A...474..653V
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) :
06 42 56.72309 -16 38 45.3854 [ 11.70 10.90 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) :
227.23028548 -08.89028243 [ 11.70 10.90 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 :
-546.01 -1223.07 [1.33 1.24 0] A 2007A&A...474..653V
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) -5.50 [0.4] / z(~) -0.000018 [0.000001] / cz -5.50 [0.40]
   A 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):
379.21 [1.58] A 2007A&A...474..653V
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:
A1V+DA C 2013yCat....1.2023S
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) :
U -1.51 [~] C 2002yCat.2237....0D
B -1.46 [~] C 2002yCat.2237....0D
V -1.46 [~] C 2002yCat.2237....0D
R -1.46 [~] C 2002yCat.2237....0D
I -1.43 [~] C 2002yCat.2237....0D
J -1.36 [~] C 2002yCat.2237....0D
H -1.33 [~] C 2002yCat.2237....0D
K -1.35 [~] C 2002yCat.2237....0D
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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!).

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (62) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NAME Sirius A GCRV 4392 LHS 219 ROT 1088
* alf CMa A GEN# +1.00048915A LPM 243 SAO 151881
* alf CMa GJ 244 A LTT 2638 SBC7 288
* 9 CMa HD 48915A 2MASS J06450887-1642566 SBC9 416
** AGC 1A HD 48915 N30 1470 SKY# 11855
ADS 5423 A HGAM 556 NAME Dog Star TD1 8027
AKARI-FIS-V1 J0645085-164258 HIC 32349 NAME Sirius TYC 5949-2777-1
BD-16 1591A HIP 32349 NLTT 16953 UBV M 12413
BD-16 1591 HR 2491 NSV 17173 UBV 6709
CCDM J06451-1643A IDS 06408-1635 A 8pc 379.21A USNO 816
CEL 1368 IRAS 06429-1639 PLX 1577 uvby98 100048915 A
Ci 20 396 IRAS S06429-1639 PMC 90-93 186 WDS J06451-1643A
CSI-16 1591 1 IRAS S06430-1639 PM 06430-1639A WEB 6525
FK5 257 IRC -20105 PPM 217626 Zkh 91
GAT 474 JP11 1425 RAFGL 1007
GC 8833 LFT 486 Renson 13090

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References (1377 between 1850 and 2020) (Total 1377)
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 : 31    ROT : 5    PM : 6    Fe_H : 39    PLX : 2    MK : 42   

   

Observing logs


ISO : 29    IUE : 12   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : alf CMa

Link by name to the catalogue in VizieR :

AKARI-FIS-V1 J0645085-164258 BD-16 1591 CCDM J06451-1643A CEL 1368 FK5 257
GJ 244 A HD 48915A HD 48915 HIC 32349 HIP 32349
HR 2491 IRAS 06429-1639 IRAS S06429-1639 IRAS S06430-1639 IRC -20105
LHS 219 2MASS J06450887-1642566 NLTT 16953 NSV 17173 PLX 1577
PPM 217626 RAFGL 1007 SAO 151881 TD1 8027 TYC 5949-2777-1
uvby98 100048915 A WDS J06451-1643A

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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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2019.12.12-17:03:39

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