HE 1327-2326

HE1327-2326
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Hydra
Right ascension	13^h 30^m 06^s^[1]
Declination	−23° 41′ 54″^[1]
Apparent magnitude (V)	13.5
Astrometry

Distance	4000 ly

Details

Mass	0.8 M_☉
Metallicity	$\begin{smallmatrix}\left[{Fe}/{H}\right]\end{smallmatrix}$ = −5.6

Other designations
HE 1327-2326, SPM3.2 4266486.

HE1327-2326, discovered in 2005 by Anna Frebel and collaborators,^[2] was the star with the lowest known iron abundance until SMSS J031300.36-670839.3 was discovered.^[3] The star is a member of Population II stars, with an iron to hydrogen ratio ([Fe/H]), or metallicity, of −5.6. This number indicates that its iron content is 1/400,000 that of the Earth's sun. However, it has a carbon abundance of roughly one-tenth solar ([C/H] = −1.0), and it is not known how these two abundances can be produced simultaneously. Discovered by the Hamburg/ESO survey for metal-poor stars, it was probably formed during an age of the universe when the metal content was much lower. It has been speculated that this star is part of the second generation, born out of the gas clouds which were polluted by the primordial Population III stars.

References

1 2 The Optical Gravitational Lensing Experiment. Additional Planetary and Low-Luminosity Object Transits from the OGLE 2001 and 2002 Observational Campaigns, A. Udalski, G. Pietrzynski, M. Szymanski, M. Kubiak, K. Zebrun, I. Soszynski, O. Szewczyk, and L. Wyrzykowski, Acta Astronomica 53 (June 2003), pp. 133–149.
↑ Frebel A., Aoki W., Christlieb N., Ando H., Asplund M., Barklem P.S., Beers T.C., Eriksson K., Fechner C., Fujimoto M.Y., Honda S., Kajino T., Minezaki T., Nomoto K., Norris J.E., Ryan S.G., Takada-Hidai M., Tsangarides S., Yoshii Y. (14 April 2005). "Nucleosynthetic signatures of the first stars". Nature 434: 871–873. arXiv:astro-ph/0503021. Bibcode:2005Natur.434..871F. doi:10.1038/nature03455. Retrieved 10 February 2014.
↑ Brainard, Curtis (10 February 2014). "The Archaeology of the Stars". New York Times. Retrieved 10 February 2014.

External links

Stars of Hydra

Bayer	α (Alphard) β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ σ τ¹ τ² υ¹ υ² φ¹ φ² φ³ χ¹ χ² ψ ω

Flamsteed	1 2 3 6 9 10 12 14 15 17 19 20 21 23 24 25 26 27 28 29 33 34 37 44 47 48 50 51 52 54 55 56 57 58 59 60 17 Crt 14 Lib 30 Mon 31 Mon 2 Sex

Variable	R S U V W X RT RW RX SX SZ TT TW VX VZ WZ AI AV CT DF EX EZ FG GK HQ HS II IL IY KU KZ LN LO LQ LR LV LX MO MX NS OY QT V335 V355 V406 V419 V478

HR	3212 3269 3271 3272 3285 3288 3295 3305 3338 3342 3374 3378 3383 3392 3411 3446 3458 3478 3480 3486 3493 3526 3529 3538 3554 3557 3564 3578 3584 3590 3596 3636 3638 3649 3651 3653 3675 3687 3704 3714 3741 3749 3750 3758 3760 3762 3763 3767 3772 3785 3788 3794 3796 3801 3802 3805 3808 3810 3822 3848 3858 3862 3908 3919 3921 3923 3931 3963 3965 3977 3986 3988 3991 4005 4011 4055 4068 4071 4076 4117 4123 4130 4149 4152 4157 4158 4162 4172 4190 4214 (3 Crt) 4225 4251 (6 Crt) 4261 4282 4298 4302 (8 Crt) 4307 4328 4331 4334 (10 Crt) 4339 4346 4373 4445 4449 (18 Crt) 4458 (20 Crt) 4469 (22 Crt) 4473 (23 Crt) 4498 4503 (26 Crt) 4525 4542 4548 4553 4558 4565 (29 Crt) 4579 4612 4628 4651 4723 4735 4774 4803 4810 4839 4857 4860 4918 4978 5090 5097 5098 5120 5128 5166 5167 5197 5209 5228 5246 5265 5309 5314 5324 5356 5399 5565

HD	68667 72659 74156 74685 75098 75217 76027 76478 78614 79481 79994 82943 83352 86226 86264 88806 90156 94046 (5 Crt) 97344 105113 106500 107869 117033 121758 125279

Gliese	Gliese 357 Gliese 433 Gliese 453 GJ 2066 GJ 3517 GJ 3634

Other	BD -3 2525 BD-22 3467 CE 315 EC 14026-2647 HAT-P-35 HAT-P-42 HE 1327-2326 IRC -20197 Kelu-1 LHS 2065 LHS 3003 2MASS 0835-08 2MASS 1114-2618 PSR B0820+02 PSR B0834+06 TWA 5 WASP-15 WASP-25 WASP-36 WISE 0855−0714

List

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HE 1327-2326

See also

References

External links