2002A&A...388..936V


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.13CEST15:21:33

2002A&A...388..936V - Astronomy and Astrophysics, volume 388, 936-939 (2002/6-4)

Mass transfer from the donor of GRS 1915+105.

VILHU O.

Abstract (from CDS):

A scenario for a periodic filling and emptying of the accretion disc of the microquasar GRS 1915+105 is proposed, by estimating the mass transfer rate from the donor and comparing it with the observed accretion rate onto the primary black hole. The mass of the Roche-lobe-filling donor (1.2±0.2M), the primary black hole mass (14±4M) and the binary orbital period of 33.5d (Greiner et al., 2001Natur.414..522G) predict for the donor spectral type and K-magnitude around K6 III and -2.6, respectively. The He-core of 0.28M of such a giant leads to evolutionary expansion along the giant branch with a conservative mass transfer rate of {dot}(M)d=(1.5±0.5)x10–8M/year. On the other hand, the average observed accretion rate onto the primary is ten times larger: {dot}(M)obs=2.0x(η/0.1)–1(d/12.5 kpc)2x10–7M/y, where η is the efficiency of converting accretion into radiation. We propose a duty cycle with (5-10)(η/0.1) per cent active ON-state. The timescale of the (recurrent) OFF-state is identified as the viscosity time scale at the circularization radius (14R) and equals tvisc=370(α/0.001)–4/5 years, where α is the viscosity parameter in the α-prescription of a classical disc. If the viscosity at the outer edge of the disc is small and η is close to the maximum available potential energy (per rest mass energy) at the innermost stable orbit, the present activity phase may still last another 10-20 years. We also discuss other solutions allowing a broader range of donor masses (0.6-2.4M).

Abstract Copyright:

Journal keyword(s): stars: binaries: close - stars: individual: GRS 1915+105

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 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2361 0

    Equat.    Gal    SGal    Ecl

C.D.S. - SIMBAD4 rel 1.7 - 2021.04.13CEST15:21:33

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


Basic data :
Granat 1915+105 -- High Mass X-ray 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:
X (Granat,PBC,...), LXB (2013ApJS), IR (2MASS,WISE), gam (INTEGRAL1), BH? (2001Natur), No* (NOVA), HXB (2016ApJS), V* (V*)
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) :
19 15 11.55576 +10 56 44.9052 (Near-IR) [ 80 80 135 ] C 2003yCat.2246....0C
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) :
19 12 49.97745 +10 51 26.8296 [ 80 80 135 ]
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) :
045.36578444 -00.21909884 [ 80 80 135 ]
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 (2) :
H 14.369 [0.058] C 2003yCat.2246....0C
K 12.896 [0.062] C 2003yCat.2246....0C
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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 (12) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

2MASS J19151155+1056449 INTEGRAL1 112 SWIFT J1915.3+1057 V* V1487 Aql
Granat 1915+105 NOVA Aql 1992 SWIFT J1915.1+1056 WISE J191511.54+105644.7
Granat 1915+10 PBC J1915.1+1056 TIC 209140669 [KRL2007b] 360

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References (2361 between 1850 and 2021) (Total 2361)
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


distance : 1   

   

Observing logs


ISO : 29    XMM : 8   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Granat 1915+105

Link by name to the catalogue in VizieR :

2MASS J19151155+1056449 V* V1487 Aql WISE J191511.54+105644.7

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2021.04.13-15:21:33

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