Psi Hydrae References
1 2 3 4 5 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, S2CID 18759600 . 1 2 3 4 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data , SIMBAD , Bibcode :1986EgUBV........0M . 1 2 Houk, Nancy; Smith-Moore, M. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars , vol. 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode :1988mcts.book.....H . ↑ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics , 546 : 14, arXiv :1208.3048 Bibcode :2012A& A...546A..61D , doi :10.1051/0004-6361/201219219 , S2CID 59451347 , A61. 1 2 3 4 5 McWilliam, Andrew (December 1990), "High-resolution spectroscopic survey of 671 GK giants", Astrophysical Journal Supplement Series , 74 : 1075– 1128, Bibcode :1990ApJS...74.1075M , doi :10.1086/191527 1 2 Lang, Kenneth R. (2006), Astrophysical formulae 1 (3rd ed.), Birkhäuser , ISBN 3-540-29692-1 * ) is given by:
2
⋅
R
∗
=
(
71.0
⋅
1.39
⋅
10
−
3
)
AU
0.0046491
AU
/
R
⨀
≈
21.2
⋅
R
⨀
{\displaystyle {\begin{aligned}2\cdot R_{*}&={\frac {(71.0\cdot 1.39\cdot 10^{-3})\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 21.2\cdot R_{\bigodot }\end{aligned}}}
1 2 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 . ↑ "* psi Hya" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2017-03-17 .{{cite web }}: CS1 maint: postscript (link )↑ Makarov, V. V.; Kaplan, G. H. (May 2005), "Statistical Constraints for Astrometric Binaries with Nonlinear Motion", The Astronomical Journal , 129 (5): 2420– 2427, Bibcode :2005AJ....129.2420M , doi :10.1086/429590 ↑ Alves, David R. (August 2000), "K-Band Calibration of the Red Clump Luminosity", The Astrophysical Journal , 539 (2): 732– 741, arXiv :astro-ph/0003329 Bibcode :2000ApJ...539..732A , doi :10.1086/309278 , S2CID 16673121 . ↑ Richichi, A.; et al. (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 ↑ Basso, Ellen B. (1987). In Favor of Deceit: A Study of Tricksters in an Amazonian Society 360 . ISBN 0-8165-1022-9
