2011A&A...534L...2K


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.16CEST06:27:51

2011A&A...534L...2K - Astronomy and Astrophysics, volume 534, L2-2 (2011/10-1)

The host galaxy of the BL Lacertae object 1ES 0647+250 and its imaging redshift.

KOTILAINEN J.K., HYVOENEN T., FALOMO R., TREVES A. and USLENGHI M.

Abstract (from CDS):

Since no spectroscopic redshift is available for the remarkable BL Lacertae object (BL Lac) 1ES 0647+250, we aim to derive an estimate of its distance from the properties of its host galaxy. We obtained a deep, high-resolution near-infrared H-band image of the BL Lac object 1ES 0647+250. We are able to detect the underlying host galaxy in the near-infrared. The host galaxy has an H-band magnitude of 16.9±0.2 and an effective radius of 1.6"±0.3." Using the imaging redshift method developed by Sbarufatti and collaborators, we estimate a redshift z=0.41±0.06. This redshift is consistent with the previously reported imaging redshift estimate from the optical i'-band of z=0.45±0.08, and with previously reported lower limits to the redshift. It agrees with constraints from its gamma-ray emission. We encourage imaging searches in the near-infrared, even with moderately sized telescopes, of the host galaxies of BL Lac objects at unknown redshift, as well as optical spectroscopy studies of 1ES 0647+250 with large telescopes to determine its spectroscopic redshift.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: distances and redshifts - BL Lacertae objects: individual: 1ES 0647+250

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 - 2020
#notes
1 QSO B0647+250 BLL 06 50 46.4902391458 +25 02 59.623980609 16.17 15.97 15.79 16.3   ~ 109 2

    Equat.    Gal    SGal    Ecl

C.D.S. - SIMBAD4 rel 1.7 - 2020.07.16CEST06:27:51

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


Basic data :
QSO B0647+250 -- BL Lac - type object
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:
BLL (Ref,2011NewA...16..503M,...), Rad (BWE,CLASS,...), gam (1FGL,2FGL,...), X (Ref,1ES,...), Bla ([DGT2001],[MGL2009],...), * (EPIC,Gaia), IR (2MASS,WISE), V* (Ref), QSO (QSO), AGN (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 50 46.4902391458 +25 02 59.623980609 (Optical) [ 0.0419 0.0433 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) :
06 47 42.2033344749 +25 06 33.272337743 [ 0.0419 0.0433 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) :
190.2824491268124 +10.9956305880005 [ 0.0419 0.0433 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 :
-0.032 0.094 [0.076 0.065 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) 54785 [~] / z(~) 0.203 [~] / cz 60858 [~]
   D 2003AJ....125.1060R
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 (12) :
U (AB) 16.17 [0.05] D 2007ApJS..173..471M
B (AB) 15.97 [0.04] D 2007ApJS..173..471M
V (AB) 15.79 [0.05] D 2007ApJS..173..471M
R 16.3 [~] E 2009A&A...495..691M
G 15.4161 [0.0169] C 2018yCat.1345....0G
J 13.561 [0.022] C 2003yCat.2246....0C
H 12.891 [0.021] C 2003yCat.2246....0C
K 12.265 [0.023] C 2003yCat.2246....0C
g (AB) 15.86 [0.05] D 2007ApJS..173..471M
r (AB) 15.69 [0.05] D 2007ApJS..173..471M
i (AB) 15.56 [0.05] D 2007ApJS..173..471M
z (AB) 15.45 [0.05] D 2007ApJS..173..471M
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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!).
Some important notes on this object about identifications and objects associations.
notes:


The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (36) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

QSO B0647+250 1FHL J0650.8+2504 MITG J065043+2503 [DGT2001] B0647+250
BWE 0647+2506 2FHL J0650.7+2502 NVSS J065046+250259 [MGL2009] BZB J0650+2503
CLASS J065046.4932+250259.646 3FHL J0650.7+2503 RGB J0650+250 [MML2015] 5BZB J0650+2502
CRATES J065047+250304 GB6 J0650+2503 RX J0650.7+2502 [VV2000b] J065046.5+250300
EPIC 202059522 GB6 B0647+2506 1RXS J065046.7+250257 [VV2003b] J065046.5+250300
1ES 0647+25.0 87GB 064743.0+250645 TeV J0650+2503 [VV2006b] J065046.5+250300
1FGL J0650.7+2503 IERS B0647+251 TeV J0650+250 [VV2010b] J065046.5+250300
2FGL J0650.7+2505 IVS B0647+251 WISE J065046.48+250259.6 [VV98b] J065046.5+250300
3FGL J0650.7+2503 2MASS J06504649+2502596 WISE J065046.48+250259.5 Gaia DR2 3381527056083359744

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References (109 between 1850 and 2020) (Total 109)
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 : 2    PM : 1    V* : 1   

   

Observing logs


XMM : 2   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : QSO B0647+250

Link by name to the catalogue in VizieR :

BWE 0647+2506 IERS B0647+251 2MASS J06504649+2502596 MITG J065043+2503 NVSS J065046+250259
1RXS J065046.7+250257 WISE J065046.48+250259.6 WISE J065046.48+250259.5 Gaia DR2 3381527056083359744

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2020.07.16-06:27:51

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