AE Pictoris
{{Short description|Star in the constellation Pictor}}
{{Starbox begin}}
{{Starbox image
| image = 250px
| caption = A light curve for AE Pictoris, adapted from Pedersen et al. (2019)
}}
{{Starbox observe
| epoch=J2000
| dec = {{DEC|−61|52|46.3515}}
| constell = Pictor
}}
{{Starbox character
| type =
| u-b =
| variable = Eclipsing binary
}}
{{Starbox astrometry
| parallax = 2.2770
| p_error = 0.0678
}}
{{Starbox orbit
| period_unitless = 2.9723 d
| eccentricity = 0.10
| periastron = {{Val|2431998.871|ul=JD|fmt=commas}}
| periarg = 39.0
| k1 = 119.0
}}
{{Starbox detail
| component1 = AE Pic A
| radius =
| luminosity_bolometric = 2,569
| gravity =
| rotation = 1.490911 d
| component2 = AE Pic B
}}
{{Starbox catalog
| names = {{odlist | V=AE Pic | CD=−61°1394 | HD=46792 | HIP=31068 | HR=2410 | SAO=249572 }}
}}
{{Starbox reference
| Simbad = AE+Pic
}}
{{Starbox end}}
AE Pictoris is an eclipsing binary star system in the southern constellation of Pictor. This dim, blue-white hued point of light is just barely visible to the naked eye; it has an apparent visual magnitude of 6.09, which drops to magnitude 6.14 during an eclipse. The system is located around 1,430 light years away from the Sun based on parallax, and it is receding with a radial velocity of 34 km/s.
This is a spectroscopic binary system with an orbital period of 2.97 days and an eccentricity of 0.10. The minimum value of the semimajor axis for the pair is {{Convert|4.8|Gm|solar radius|lk=on|abbr=on}}. The secondary star was only recently (in 2023) detected, making it a double-lined spectroscopic binary. It is classed as a probable eclipsing binary variable (EB:), but with some uncertainty regarding the specific type. This is a candidate runaway star system, having a peculiar velocity of {{Val|24.9|4.9|5.1|u=km/s}} relative to its neighbors. The visible component is a B-type main-sequence star with a stellar classification of B3V. it is 28 million years old with seven times the mass of the Sun. The star is radiating 2,569 times the luminosity of the Sun from its photosphere at an effective temperature of 18,700 K.
References
{{reflist|refs=
{{cite simbad | title=AE Pic | access-date=2019-08-03 }}
{{Cite Gaia DR2|5478303942228108288}}
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| doi=10.1002/asna.200911355 | arxiv=1003.2335 | s2cid=111387483 }}
| title=The Spectroscopic Binary CPD -61°669
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| doi=10.1086/145251 | bibcode=1950ApJ...111..191S | doi-access=free }}
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| title=General Catalogue of Variable Stars
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| year=2017 | volume=61 | issue=1 | pages=80–88
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| doi=10.3847/1538-4357/ac3335 | year=2022
| title=Rotation Signature of TESS B-type Stars. A Comprehensive Analysis
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| last3=Messias | first3=Y. S. | last4=Leão | first4=I. C.
| last5=Almeida | first5=L. A. | last6=Janot-Pacheco | first6=E.
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| last9=Santana | first9=J. V. | last10=Gonçalves | first10=N. S.
| last11=Das Chagas | first11=M. L. | last12=Teixeira | first12=M. A.
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| journal=The Astrophysical Journal
| volume=924 | issue=2 | page=117 | arxiv=2202.01022
| bibcode=2022ApJ...924..117B | s2cid=246030494
| doi-access=free
}}
}}
{{Stars of Pictor}}
{{DEFAULTSORT:AE Pictoris}}
Category:B-type main-sequence stars
Category:Spectroscopic binaries