1997A&A...328L..37D


Query : 1997A&A...328L..37D

1997A&A...328L..37D - Astronomy and Astrophysics, volume 328, L37-39 (1997/12-2)

Is β Crateris a Sirius-like system?

DUEMMLER R., PELT J., KORHONEN H. and ILIEV I.

Abstract (from CDS):

New radial velocity (RV) measurements were obtained for the star β Crt, which has been suspected to be a Sirius-like binary. Although a preliminary period analysis indicated a period as short as 8 days, no significant change of the RV over 8 nights could be detected. While this result is similar to what Smalley et al. (1997MNRAS.284..457S) found, our value of the mean RV is much smaller. We, therefore, conclude that the RV of β Crt is indeed variable, maybe but not necessarily due to binarity, but so far no period can be determined.

Abstract Copyright:

Journal keyword(s): stars: binaries - stars: binaries, spectroscopic - stars: individual: β Crt

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 - 2022
#notes
1 * bet Crt SB* 11 11 39.4787167248 -22 49 33.052973988   4.475 4.449     A1V 151 0

Query : 1997A&A...328L..37D

Basic data :
* bet Crt -- 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,...), X (RBS,RE,...), UV (2EUVE,EUVE,...), IR (IRAS,2MASS), SB* (2013MNRAS), WD* (WD), PM* (2018yCat)
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) :
11 11 39.4787167248 -22 49 33.052973988 (Optical) [ 0.1107 0.1581 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) :
11 09 11.6972479014 -22 33 08.921458018 [ 0.1107 0.1581 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) :
274.7767357419833 +34.5328528018085 [ 0.1107 0.1581 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 :
7.827 -102.911 [0.168 0.221 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) 5.60 [0.5] / z(~) 0.000019 [0.000002] / cz 5.60 [0.50]
   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):
10.3043 [0.1166] 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:
A1V C 1988MSS...C04....0H
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 4.475 [0.014] D 2000A&A...355L..27H
V 4.449 [0.009] D 2000A&A...355L..27H
G 4.433578 [0.002883] C 2020yCat.1350....0G
J 4.324 [0.153] D 2003yCat.2246....0C
H 4.415 [0.076] C 2003yCat.2246....0C
K 4.337 [0.029] 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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sedIcon
within 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!).
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The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (49) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* bet Crt GSC 06649-01274 RBS 948 TIC 429304663
* 11 Crt HD 97277 2RE J1111-224 TYC 6649-1274-1
BD-22 3095 HIC 54682 2RE J111139-224901 UBV 10207
CD-22 8743 HIP 54682 RE J111140-224934 UBV M 16858
CPD-22 4900 HR 4343 RE J1111-224 uvby98 100097277
2EUVE J1111-22.8 IRAS 11091-2233 ROT 1664 WD 1109-225
EUVE J1111-22.8 JP11 2035 2RXF J111139.3-224936 WEB 9872
FK5 421 2MASS J11113949-2249325 RX J1111.7-2250 YZ 112 8674
GC 15385 N30 2631 1RXS J111140.4-224933 Gaia DR2 3537996837843690496
GCRV 6877 PLX 2605 SACS 244 Gaia EDR3 3537996837843690496
GEN# +1.00097277 PLX 2605.00 SAO 179624
GJ 416.1 PMC 90-93 303 SKY# 21333
GJ 9352 PPM 258664 TD1 15445

References (151 between 1850 and 2022) (Total 151)
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 : 3    distance : 2    ROT : 3    Fe_H : 2    PLX : 5    PM : 6    MK : 9   

   

Observing logs


IUE : 5   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : * bet Crt

Link by name to the catalogue in VizieR :

BD-22 3095 CD-22 8743 CPD-22 4900 EUVE J1111-22.8 FK5 421
GJ 416.1 GJ 9352 GSC 06649-01274 HD 97277 HIC 54682
HIP 54682 HR 4343 IRAS 11091-2233 2MASS J11113949-2249325 PLX 2605
PPM 258664 2RE J1111-224 2RE J111139-224901 1RXS J111140.4-224933 SAO 179624
TD1 15445 TYC 6649-1274-1 uvby98 100097277 WD 1109-225 Gaia DR2 3537996837843690496
Gaia EDR3 3537996837843690496

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2022.05.19-21:07:59

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