2013A&A...559A..74B

Query : 2013A&A...559A..74B

2013A&A...559A..74B - Astronomy and Astrophysics, volume 559A, 74-74 (2013/11-1)

The Gaia astrophysical parameters inference system (Apsis). Pre-launch description.

BAILER-JONES C.A.L., ANDRAE R., ARCAY B., ASTRAATMADJA T., BELLAS-VELIDIS I., BERIHUETE A., BIJAOUI A., CARRION C., DAFONTE C., DAMERDJI Y., DAPERGOLAS A., DE LAVERNY P., DELCHAMBRE L., DRAZINOS P., DRIMMEL R., FREMAT Y., FUSTES D., GARCIA-TORRES M., GUEDE C., HEITER U., JANOTTO A.-M., KARAMPELAS A., KIM D.-W., KNUDE J., KOLKA I., KONTIZAS E., KONTIZAS M., KORN A.J., LANZAFAME A.C., LEBRETON Y., LINDSTROM H., LIU C., LIVANOU E., LOBEL A., MANTEIGA M., MARTAYAN C., ORDENOVIC C., PICHON B., RECIO-BLANCO A., ROCCA-VOLMERANGE B., SARRO L.M., SMITH K., SORDO R., SOUBIRAN C., SURDEJ J., THEVENIN F., TSALMANTZA P., VALLENARI A. and ZOREC J.

Abstract (from CDS):

The Gaia satellite will survey the entire celestial sphere down to 20th magnitude, obtaining astrometry, photometry, and low resolution spectrophotometry on one billion astronomical sources, plus radial velocities for over one hundred million stars. Its main objective is to take a census of the stellar content of our Galaxy, with the goal of revealing its formation and evolution. Gaia's unique feature is the measurement of parallaxes and proper motions with hitherto unparalleled accuracy for many objects. As a survey, the physical properties of most of these objects are unknown. Here we describe the data analysis system put together by the Gaia consortium to classify these objects and to infer their astrophysical properties using the satellite's data. This system covers single stars, (unresolved) binary stars, quasars, and galaxies, all covering a wide parameter space. Multiple methods are used for many types of stars, producing multiple results for the end user according to different models and assumptions. Prior to its application to real Gaia data the accuracy of these methods cannot be assessed definitively. But as an example of the current performance, we can attain internal accuracies (rms residuals) on F, G, K, M dwarfs and giants at G=15 (V=15-17) for a wide range of metallicites and interstellar extinctions of around 100K in effective temperature (Teff), 0.1mag in extinction (A0), 0.2dex in metallicity ([Fe/H]), and 0.25dex in surface gravity (logg). The accuracy is a strong function of the parameters themselves, varying by a factor of more than two up or down over this parameter range. After its launch in December 2013, Gaia will nominally observe for five years, during which the system we describe will continue to evolve in light of experience with the real data.

Abstract Copyright: ∼

Journal keyword(s): galaxies: fundamental parameters - methods: data analysis - methods: statistical - stars: fundamental parameters - surveys

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 HD 82443 BY* 09 32 43.7594578944 +26 59 18.706023348   7.78   6.6   G9V(k) 248 1

Query : 2013A&A...559A..74B

Basic data :
HD 82443 -- BY Dra Variable
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: 		* (2013A&A,HD,...), PM* (2016ApJ,LSPM,...), X (RBS,RX,...), UV (2EUVE,EUVE,...), ** (**,WDS), MIR (WISEA,WISE), BY* (2017ARep), Ro* (1996ApJ), V* (V*), NIR (2MASS), IR (IRAS)
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) : 		09 32 43.7594578944 +26 59 18.706023348 (Optical) [ 0.0164 0.0130 90 ] A 2020yCat.1350....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] : 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) : 		09 29 49.9051695919 +27 12 49.444962432 [ 0.0164 0.0130 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) : 		201.2106529170632 +46.0643229100521 [ 0.0164 0.0130 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 : 		-147.260 -246.593 [0.020 0.015 90] A 2020yCat.1350....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) 8.411 [0.0021] / z(spectroscopic) 0.000028 [0.000000] / cz 8.41 [0.00]
   (Opt) A 2018A&A...616A...7S
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): 		55.3291 [0.0206] A 2020yCat.1350....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: 		G9V(k) C 2003AJ....126.2048G
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 (6) :
B 7.78 [~] E ~
R 6.6 [~] E 2003AJ....125..984M
G 6.813439 [0.003084] C 2020yCat.1350....0G
J 5.584 [0.020] C 2003yCat.2246....0C
H 5.242 [0.023] C 2003yCat.2246....0C
K 5.119 [0.016] C 2003yCat.2246....0C
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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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 ) :

: 1 : 136 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (48) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 82443 GJ 354.1 PPM 99671 UBV 9094
** LDS 3903A GSC 01962-00469 RBS 783 USNO-B1.0 1169-00193323
AG+27 1009 HIC 46843 2RE J0932+265 V* DX Leo
ASCC 680021 HIP 46843 2RE J093244+265939 WDS J09327+2659A
BD+27 1775 IRAS 09298+2712 RX J0932.7+2659 WEB 8832
2EUVE J0932+26.9 JP11 1827 1RXS J093243.9+265924 WISEA J093243.64+265916.1
EUVE J0932+26.9 LSPM J0932+2659W SAO 80897 WISE J093243.65+265916.4
GC 13163 LTT 12521 SKY# 18468 YZ 27 5001
GCRV 6178 2MASS J09324378+2659192 SPOCS 2738 [ZEH2003] RX J0932.7+2659 1
GEN# +1.00082443 NLTT 22012 TIC 172533278 Gaia DR2 646255212109355136
GJ 9301 A PLX 2269 TYC 1962-469-1 Gaia DR3 646255212109355136
GJ 354.1 A PLX 2269.00 UBV M 15491 Gaia DR1 646255207814240896

References (248 between 1850 and 2024) (Total 248)
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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Collections of Measurements


velocities : 12    V* : 2    distance : 2    ROT : 8    Fe_H : 15    PLX : 6    PM : 6    MK : 6   

   

Observing logs


IUE : 16   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : HD 82443

Link by name to the catalogue in VizieR :

HD 82443 AG+27 1009 BD+27 1775 EUVE J0932+26.9 GJ 9301 A
GJ 354.1 A GJ 354.1 GSC 01962-00469 HIC 46843 HIP 46843
IRAS 09298+2712 LSPM J0932+2659W 2MASS J09324378+2659192 NLTT 22012 PLX 2269
PPM 99671 2RE J0932+265 2RE J093244+265939 1RXS J093243.9+265924 SAO 80897
TYC 1962-469-1 USNO-B1.0 1169-00193323 V* DX Leo WDS J09327+2659A WISEA J093243.64+265916.1
WISE J093243.65+265916.4 Gaia DR2 646255212109355136 Gaia DR3 646255212109355136 Gaia DR1 646255207814240896

Search by coordinates in Vizier (radius: 6 arcsec)

Indications mainly about references on other documents
Notes (1) :

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