2018A&A...616A...5C


Query : 2018A&A...616A...5C

2018A&A...616A...5C - Astronomy and Astrophysics, volume 616A, 5-5 (2018/8-1)

Gaia Data Release 2. Gaia Radial Velocity Spectrometer.

CROPPER M., KATZ D., SARTORETTI P., PRUSTI T., DE BRUIJNE J.H.J., CHASSAT F., CHARVET P., BOYADJIAN J., PERRYMAN M., SARRI G., GARE P., ERDMANN M., MUNARI U., ZWITTER T., WILKINSON M., ARENOU F., VALLENARI A., GOMEZ A., PANUZZO P., SEABROKE G., ALLENDE PRIETO C., BENSON K., MARCHAL O., HUCKLE H., SMITH M., DOLDING C., JANSSEN K., VIALA Y., BLOMME R., BAKER S., BOUDREAULT S., CRIFO F., SOUBIRAN C., FREMAT Y., JASNIEWICZ G., GUERRIER A., GUY L.P., TURON C., JEAN-ANTOINE-PICCOLO A., THEVENIN F., DAVID M., GOSSET E. and DAMERDJI Y.

Abstract (from CDS):

This paper presents the specification, design, and development of the Radial Velocity Spectrometer (RVS) on the European Space Agency's Gaia mission. Starting with the rationale for the full six dimensions of phase space in the dynamical modelling of the Galaxy, the scientific goals and derived top-level instrument requirements are discussed, leading to a brief description of the initial concepts for the instrument. The main part of the paper is a description of the flight RVS, considering the optical design, the focal plane, the detection and acquisition chain, and the as-built performance drivers and critical technical areas. After presenting the pre-launch performance predictions, the paper concludes with the post-launch developments and mitigation strategies, together with a summary of the in-flight performance at the end of commissioning.

Abstract Copyright: © ESO 2018

Journal keyword(s): space vehicles: instruments - instrumentation: spectrographs - surveys - techniques: spectroscopic - techniques: radial velocities

VizieR on-line data: <CDS Catalogue: I/345>

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 - 2021
#notes
1 HD 161617 * 17 41 23.3477454807 +67 09 07.175188219   8.12 6.64     K5 8 0

    Equat.    Gal    SGal    Ecl

Query : 2018A&A...616A...5C

Basic data :
HD 161617 -- 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,AG,...), IR (IRAS,2MASS)
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) :
17 41 23.3477454807 +67 09 07.175188219 (Optical) [ 0.0305 0.0429 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] : 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) :
17 41 27.7231115547 +67 10 27.270572648 [ 0.0305 0.0429 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) :
097.1581523875204 +31.6138647691075 [ 0.0305 0.0429 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 :
-5.444 19.293 [0.066 0.074 90] A 2018yCat.1345....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) -19.163 [0.0189] / z(spectroscopic) -0.000064 [0.000000] / cz -19.16 [0.02]
   (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):
3.3625 [0.0379] 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:
K5 E 1993yCat.3135....0C
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 8.12 [0.02] D 2000A&A...355L..27H
V 6.64 [0.01] D 2000A&A...355L..27H
G 6.0934 [0.0005] C 2018yCat.1345....0G
J 4.116 [0.244] D 2003yCat.2246....0C
H 3.404 [0.240] D 2003yCat.2246....0C
K 3.149 [0.334] E 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!).
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Identifiers (16) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 161617 GC 24065 IRAS 17414+6710 SKY# 31955
AG+67 759 GSC 04211-00623 2MASS J17412334+6709070 TIC 233201616
BD+67 1031 HIC 86564 PPM 20529 TYC 4211-623-1
DO 35893 HIP 86564 SAO 17608 Gaia DR2 1634325460896887808

References (8 between 1850 and 2021) (Total 8)
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 : 2    distance : 1    PLX : 3    PM : 5    MK : 1   

   


External archives :

Data at NED - NASA/IPAC Extragalactic Database : HD 161617

Link by name to the catalogue in VizieR :

HD 161617 AG+67 759 BD+67 1031 DO 35893 GSC 04211-00623
HIC 86564 HIP 86564 IRAS 17414+6710 2MASS J17412334+6709070 PPM 20529
SAO 17608 TYC 4211-623-1 Gaia DR2 1634325460896887808

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2021.07.29-09:01:27

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