LDN 57

C.D.S. - SIMBAD4 rel 1.7 - 2018.11.17CET17:27:01

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


Basic data :
LDN 57 -- Dark Cloud (nebula)
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:
DNe (LDN,Barnard), glb (Ref), MoC ([CB88]), smm (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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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 22 38.2 -23 49 34 [ ] D 2006ApJ...645..369B
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
17 22 38.2 -23 49 34 [ ]
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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 19 35.4 -23 46 45 [ ]
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
001.5249 +07.0895 [ ]
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) 3.51 [~] / z(~) 0.000012 [~] / cz 3.51 [~]
   D 1978ApJ...221L.117H
SIMBAD with radius arcmin
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VizieR photometry viewer    sed-help-icon
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 (3) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

LDN 57 Barnard 68 [CB88] 82

Plots and Images

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Aladin applet

References (58 between 2014 and 2019) (Total 269)
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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                 or select by : (not exhaustive, explanation here)


Observing logs


ISO : 1    XMM : 1    herschel : 18   

   

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 (1)

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 (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 1.908 83700620 CAM01 5.05 8.35 B68 1998-03-01T10:33:20 1254 34746 642"x660" 260.6447 -23.7972 PANDRE + PA_DARK

xmm (1)

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]
The XMM-Newton Observation log (2018-11-05)[image/fits] (13883 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 1.8364 0152750101 2003-12-17 Barnard 68 260.67915 -23.80153 2002-09-27T06:56:23 51176 FITS PPSp 0152750101 Y

herschel (18)

The 1 column in color are computed by VizieR, and are not part of the original data.

Note: (see also the postcard server)

VI/139/herschel
Post annotation
Herschel Observation Log (Herschel Science Centre, 2013) [ReadMe+ftp]
The Herschel Observation Log (37093 rows)
img(gal)
start AladinLite

Full _r OD Target RAJ2000 DEJ2000 Proposal AOT Dur Start ObsId PACS HIFI SPIRE Label arcmin "h:m:s" "d:m:s" s s
1 0.3232 852 B68 17 22 37.10 -23 49 46.0 KPGT_vossenko_1 PacsLineSpec 15091 2011-09-13T06:29:23 1342228534 get Herschel/PACS observation #1342228534 B68-weak 2 0.3232 852 B68 17 22 37.10 -23 49 46.0 KPGT_vossenko_1 PacsLineSpec 3825 2011-09-13T05:23:25 1342228533 get Herschel/PACS observation #1342228533 B68-strong 3 0.3232 835 B68 17 22 37.10 -23 49 46.0 KPGT_vossenko_1 HifiPoint 8481 2011-08-26T17:42:45 1342227537 get Herschel/HIFI observation #1342227537 B68-point-0972-OH+-NH-H3O+- resched - resched 4 0.3232 681 B68 17 22 37.10 -23 49 46.0 KPGT_vossenko_1 HifiPoint 193 2011-03-26T21:04:47 1342216831 get Herschel/HIFI observation #1342216831 B68-point-0572-NH3-H2O 5 0.3232 642 B68 17 22 37.10 -23 49 46.0 KPGT_vossenko_1 HifiPoint 4251 2011-02-14T15:43:28 1342214309 get Herschel/HIFI observation #1342214309 B68-point-0835-CH+ 6 0.3232 508 B68-1 17 22 37.10 -23 49 46.0 KPGT_vossenko_1 HifiPoint 745 2010-10-04T05:29:28 1342205793 get Herschel/HIFI observation #1342205793 B68-point-1900-CII 7 0.3232 503 B68 17 22 37.10 -23 49 46.0 KPGT_vossenko_1 HifiPoint 527 2010-09-29T06:23:31 1342205292 get Herschel/HIFI observation #1342205292 B68-point-0536-CH 8 0.3340 310 B68 17 22 38.20 -23 49 54.0 KPGT_evandish_1 HifiPoint 12972 2010-03-20T16:45:00 1342192377 get Herschel/HIFI observation #1342192377 PSP1_H2O 110-101 - B68 9 0.6293 508 B68-main-1 17 22 35.60 -23 49 46.0 KPGT_vossenko_1 HifiPoint 745 2010-10-04T05:58:42 1342205795 get Herschel/HIFI observation #1342205795 B68-point-main-1900-CII 10 0.7366 320 B68 17 22 35.00 -23 49 30.0 KPGT_okrause_1 PacsPhoto 4509 2010-03-30T11:32:03 1342193056 get Herschel/PACS observation #1342193056 Launhardt PACS-2 - B68 11 0.7366 320 B68 17 22 35.00 -23 49 30.0 KPGT_okrause_1 PacsPhoto 4509 2010-03-30T10:15:51 1342193055 get Herschel/PACS observation #1342193055 Launhardt PACS-1 - B68 12 0.7366 287 B68 17 22 35.00 -23 49 30.0 KPGT_okrause_1 SpirePhoto 375 2010-02-25T16:21:59 1342191191 get Herschel/SPIRE observation #1342191191 Launhardt SPIRE - B68 13 0.9607 1051 B68-edge-1 17 22 34.10 -23 49 46.0 KPGT_vossenko_1 HifiPoint 2338 2012-03-30T20:26:13 1342242800 get Herschel/HIFI observation #1342242800 B68-point-edge-1900-CII - 0001 14 0.9607 508 B68-edge-1 17 22 34.10 -23 49 46.0 KPGT_vossenko_1 HifiPoint 745 2010-10-04T05:44:05 1342205794 get Herschel/HIFI observation #1342205794 B68-point-edge-1900-CII 15 4.0594 486 B68 17 22 24.00 -23 52 00.0 KPGT_pandre_1 SpirePacsParallel 4749 2010-09-12T02:34:31 1342204365 get Herschel/PACS observation #1342204365 get Herschel/SPIRE observation #1342204365 pipe_b68_90 16 4.0594 486 B68 17 22 24.00 -23 52 00.0 KPGT_pandre_1 SpirePacsParallel 4506 2010-09-12T01:18:15 1342204364 get Herschel/PACS observation #1342204364 get Herschel/SPIRE observation #1342204364 pipe_b68_00 17 16.6204 859 B68_mod-1-1-2-4 17 23 50.00 -23 47 00.0 KPGT_pandre_1 PacsPhoto 3509 2011-09-20T07:00:03 1342228965 get Herschel/PACS observation #1342228965 pipe_b68_p2_mod 18 16.6204 859 B68_mod-1-8-2-4 17 23 50.00 -23 47 00.0 KPGT_pandre_1 PacsPhoto 3509 2011-09-20T06:00:29 1342228964 get Herschel/PACS observation #1342228964 pipe_b68_p1_mod


External archives :

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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 .
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2018.11.17-17:27:03

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