| prop_mo_ra = 6.65[1]
| prop_mo_dec = 25.03[1]
| parallax = 10.1141
| p_error = 0.0578
| parallax_footnote = [1]
| absmag_v = 1.65 ± 0.30[10]
}}{{Starbox detail
| source =
| mass =
| radius = 2.70[1]
| luminosity = 18.6{{±|5.9|4.5}}[10]
| gravity = 3.78 ± 0.08[10]
| temperature = 7,278 ± 34[10]
| metal = [Z] = +0.52 ± 0.15[10]
| rotational_velocity =
| rotation =
| age_myr =
}}{{Starbox catalog
| names={{odlist | V=AZ Phe | CD=−44°216| FK5= | HD=4849| HIP=3903| HR=239 | SAO=215254| AAVSO= }}[16]
}}{{Starbox reference
| Simbad = AZ+Phe
}}{{Starbox end}}AZ Phoenicis (HR 239) is a variable star in the constellation of Phoenix. It has an average visual apparent magnitude of 6.47,[3] so it is at the limit of naked eye visibility. From parallax measurements by the Gaia spacecraft, it is located at a distance of {{Convert|322|ly|pc|abbr=off|lk=on}} from Earth.[1] Its absolute magnitude is calculated at 1.65.[10]AZ Phoenicis is a Delta Scuti variable that pulsates with a single period of 79.3 minutes,[20] causing its visual brightness to vary with an amplitude of 0.015 magnitudes.[3] Its variability was discovered by Werner Weiss in 1977, from observations with the 50-cm telescope at La Silla Observatory.[22] AZ Phoenicis has also been classified as a possible Ap star, which remains uncertain, even though the star has a large concentration of metals;[20] the overall metallicity of the star has been measured to about 3 times the solar metallicity.[10]
This star is classified with a spectral type of A9/F0III,[4] corresponding to a giant of type A or F. With an estimated radius of 2.7 times the solar radius,[1] it is shining with 19 times the solar luminosity at an effective temperature of 7,280 K.[10] The astrometric observations by the Hipparcos spacecraft detected a significant acceleration in the proper motion of AZ Phoenicis, indicating it is an astrometric binary.[28]
References
1. ^1 2 3 4 {{citation | title=General catalogue of variable stars: Version GCVS 5.1 | last1=Samus' | first1=N. N | last2=Kazarovets | first2=E. V | last3=Durlevich | first3=O. V | last4=Kireeva | first4=N. N | last5=Pastukhova | first5=E. N | journal=Astronomy Reports | volume=61 | issue=1 | pages=80 | year=2017 | postscript=. | doi=10.1134/S1063772917010085 | bibcode=2017ARep...61...80S }}
2. ^1 {{cite simbad | title=AZ Phe| access-date=2 February 2019 }}
3. ^1 2 3 4 5 6 7 8 {{cite DR2|4985824231651870080}}
4. ^1 2 {{cite journal|bibcode=1978mcts.book.....H|title=Michigan atalogue of two dimensional spectral types for the HD stars, Vol. 2|author=Houk, N.|journal=Michigan Spectral Survey|volume=2|date=1978}}
5. ^1 2 3 4 5 6 7 8 {{cite journal|bibcode=2002A&A...392..515P|title=On the Period-Luminosity-Colour-Metallicity relation and the pulsational characteristics of λ Bootis type stars|journal=Astronomy and Astrophysics|volume=392|issue=2|pages=515–528|last1=Paunzen|first1=E.|last2=Handler|first2=G.|last3=Weiss|first3=W. W.|last4=Nesvacil|first4=N.|last5=Hempel|first5=A.|last6=Romero-Colmenero|first6=E.|last7=Vuthela|first7=F. F.|last8=Reegen|first8=P.|last9=Shobbrook|first9=R. R.|last10=Kilkenny|first10=D.|year=2002|arxiv=astro-ph/0207494|doi=10.1051/0004-6361:20020854}}
6. ^1 2 {{cite journal|bibcode=1985MNRAS.216.1017K|title=Differential photometry of the δ Sct stars HR 151 and HR 239|journal=Monthly Notices of the Royal Astronomical Society|volume=216|pages=1017|last1=Kreidl|first1=T. J.|year=1985}}
7. ^1 {{cite journal|bibcode=1977IBVS.1364....1W|title=HR 239 and HR 8676: Two delta Scuti-Type Variables|journal=Information Bulletin on Variable Stars|volume=1364|pages=1|last1=Weiss|first1=W. W.|year=1977}}
8. ^1 {{citation | last1=Makarov | first1=V. V. | last2=Kaplan | first2=G. H. | title=Statistical Constraints for Astrometric Binaries with Nonlinear Motion | journal=The Astronomical Journal | postscript=. | volume=129 | issue=5 | pages=2420–2427 | date=May 2005 | doi=10.1086/429590 | bibcode=2005AJ....129.2420M }}