From Wikipedia, the free encyclopedia
Star in the constellation Phoenix
Delta Phoenicis ,
Latinized from δ Phoenicis, is a single,
[9] yellow-hued
star in the southern
constellation of
Phoenix . With an
apparent visual magnitude of 3.93,
[2] it is visible to the naked eye. Based upon an annual
parallax shift of 22.95
mas as seen from Earth,
[1] it is located 142
light years from the
Sun . The star is moving closer to the Sun with a
radial velocity of −7 km/s.
[4]
This is a
G-type
giant star with a
stellar classification of G8.5 IIIb.
[2] It is a
red clump star, which means it has reached the stage of its
evolution where it is generating energy through
helium fusion at its
core .
[7] The measured
angular diameter of this star, after correction for
limb darkening , is ± 0.02 mas
[10] At its estimated distance, this yields a physical size of about 10.5 times the
radius of the Sun .
[6] It is around 3.7
[5] billion years old with 1.46
[5] times the
mass of the Sun . The star is radiating 60
[2] times the
Sun's luminosity from its enlarged
photosphere at an
effective temperature of 4,762 K.
[5]
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 . Vizier catalog entry ^
a b c d e f g 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 . Vizier catalog entry ^
a b Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers . 42 (2): 443.
Bibcode :
2014JAVSO..42..443M . Vizier catalog entry ^
a b Gontcharov, G. A. (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 . ^
a b c d e f Luck, R. Earle (2015). "Abundances in the Local Region. I. G and K Giants". Astronomical Journal . 150 (3). 88.
arXiv :
1507.01466 .
Bibcode :
2015AJ....150...88L .
doi :
10.1088/0004-6256/150/3/88 .
S2CID
118505114 . ^
a b Lang, Kenneth R. (2006),
Astrophysical formulae Birkhäuser ,
ISBN
978-3-540-29692-8 * ) is given by:
2
⋅
R
∗
=
(
43.6
⋅
2.24
⋅
10
−
3
)
AU
0.0046491
AU
/
R
⨀
≈
21
⋅
R
⨀
{\displaystyle {\begin{aligned}2\cdot R_{*}&={\frac {(43.6\cdot 2.24\cdot 10^{-3})\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 21\cdot R_{\bigodot }\end{aligned}}}
^
a b c Liu, Y. J.; Zhao, G.; Shi, J. R.; Pietrzynski, G.; Gieren, W. (2007).
"The abundances of nearby red clump giants" . Monthly Notices of the Royal Astronomical Society . 382 (2): 553.
Bibcode :
2007MNRAS.382..553L .
doi :
10.1111/j.1365-2966.2007.11852.x .
^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics . 561 : A126.
arXiv :
1312.3474 .
Bibcode :
2014A&A...561A.126D .
doi :
10.1051/0004-6361/201220762 .
S2CID
54046583 . Vizier catalog entry
^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems".
Monthly Notices of the Royal Astronomical Society . 389 (2): 869–879.
arXiv :
0806.2878 .
Bibcode :
2008MNRAS.389..869E .
doi :
10.1111/j.1365-2966.2008.13596.x .
S2CID
14878976 .
^ Richichi, A.; Percheron, I.; Khristoforova, M. (February 2005), "CHARM2: An updated Catalog of High Angular Resolution Measurements", Astronomy and Astrophysics , 431 (2): 773–777,
Bibcode :
2005A&A...431..773R ,
doi :
10.1051/0004-6361:20042039 .
