From Wikipedia, the free encyclopedia
Star in the constellation Eridanus
Rho3 Eridani ,
Latinized from ρ3 Eridani, is a
star located in the
constellation
Eridanus . It forms an
asterism with
Rho1 and
Rho2 Eridani , south of Cetus, in the upper north east portion of Eridanus. The star has an
apparent visual magnitude of 5.26,
[2] which is bright enough to be seen with the naked eye on a dark, clear night. The distance to this star, as determined via the
parallax method ,
[1] is about 136
light years .
This is an
A-type main sequence star with a
stellar classification of A5 V.
[3] (Some sources list it as A8 V.)
[11] It is some 500 million years old and is spinning rapidly with a
projected rotational velocity of 186 km/s.
[9] This rotation is giving the star a slightly
oblate shape , with the equator being 5% larger than the poles.
[11] The star has about 120% of the
radius of the Sun ,
[7] and 183% of the
Sun's mass . It shines with 10 times the
solar luminosity from its
outer atmosphere at an
effective temperature of 7,400 K.
[8]
References
^
a
b
c
d
e
f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics , 474 (2): 653–664,
arXiv :
0708.1752 ,
Bibcode :
2007A&A...474..653V ,
doi :
10.1051/0004-6361:20078357 ,
S2CID
18759600 .
^
a
b
c
d Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data ,
SIMBAD ,
Bibcode :
1986EgUBV........0M .
^
a
b Abt, Helmut A.; Morrell, Nidia I. (July 1995), "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars", Astrophysical Journal Supplement , 99 : 135,
Bibcode :
1995ApJS...99..135A ,
doi :
10.1086/192182 .
^ Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters , 32 (11): 759–771,
arXiv :
1606.08053 ,
Bibcode :
2006AstL...32..759G ,
doi :
10.1134/S1063773706110065 ,
S2CID
119231169 .
^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters , 38 (5): 331,
arXiv :
1108.4971 ,
Bibcode :
2012AstL...38..331A ,
doi :
10.1134/S1063773712050015 ,
S2CID
119257644 .
^
a
b De Rosa, R. J.; et al. (January 2014), "The VAST Survey - III. The multiplicity of A-type stars within 75 pc", Monthly Notices of the Royal Astronomical Society , 437 (2): 1216–1240,
arXiv :
1311.7141 ,
Bibcode :
2014MNRAS.437.1216D ,
doi :
10.1093/mnras/stt1932 ,
S2CID
88503488 .
^
a
b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics , 367 (2): 521–524,
arXiv :
astro-ph/0012289 ,
Bibcode :
2001A&A...367..521P ,
doi :
10.1051/0004-6361:20000451 ,
S2CID
425754 .
^
a
b
c McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society , 427 (1): 343–57,
arXiv :
1208.2037 ,
Bibcode :
2012MNRAS.427..343M ,
doi :
10.1111/j.1365-2966.2012.21873.x ,
S2CID
118665352 .
^
a
b Royer, F.; et al. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics , 463 (2): 671–682,
arXiv :
astro-ph/0610785 ,
Bibcode :
2007A&A...463..671R ,
doi :
10.1051/0004-6361:20065224 ,
S2CID
18475298 .
^
"* rho03 Eri" ,
SIMBAD ,
Centre de données astronomiques de Strasbourg , retrieved 2016-10-12 .
^
a
b van Belle, Gerard T., Gerard T. (March 2012), "Interferometric observations of rapidly rotating stars", The Astronomy and Astrophysics Review , 20 (1): 51,
arXiv :
1204.2572 ,
Bibcode :
2012A&ARv..20...51V ,
doi :
10.1007/s00159-012-0051-2 ,
S2CID
119273474 .