HD 79447

{{Short description|Star in the constellation Carina}}

{{about|i Carinae|I Carinae|HD 90589|ι Carinae|Iota Carinae|l Carinae|HD 84810}}

{{Starbox begin}}

{{Starbox observe

| epoch = J2000.0

| constell = Carina

| ra = {{RA|09|11|16.72089}}

| dec = {{DEC|−62|19|01.1295}}

| appmag_v = +3.96

}}

{{Starbox character

| type =

| class = B3V

| b-v = {{Val|−0.180|0.006}}

| u-b =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|+17.5|2.7}}

| prop_mo_ra = −37.48

| prop_mo_dec = +14.59

| parallax = 6.01

| p_error = 0.12

| parallax_footnote =

| absmag_v = −2.14

}}

{{Starbox detail

| source =

| mass = {{Val|7.0|0.1}}

| radius = 5.6

| luminosity = 2,054.17

| gravity = {{Val|3.5|0.1}}

| temperature = {{Val|18900|500|fmt=commas}}

| metal_fe =

| rotation =

| rotational_velocity = 0

| age_myr = {{Val|39.2|7.0}}

}}

{{Starbox catalog

| names = {{odlist | B=i Car | CPD=−61°1201 | HD=79447 | HIP=45101 | HR=3663 | SAO=250471 | GC=12707 }}

}}

{{Starbox reference

| Simbad = HD+79447

}}

{{Starbox end}}

HD 79447 is a single star in the southern constellation of Carina. It has the Bayer designation i Carinae, while HD 79447 is the identifier from the Henry Draper catalogue. This star has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of +3.96. It is located at a distance of approximately 540 light years from the Sun based on parallax, and has an absolute magnitude of −2.14. The star drifted further away with a radial velocity of +18 km/s. It is a candidate member of the Lower Centaurus–Crux group of the Sco OB2 association.

This object is a B-type main-sequence star with a stellar classification of B3V. A surface magnetic field has been detected with a strength on the order of {{Val|1|ul=kG}}. It has an estimated age of around 39 million years with no measured spin rate. The star has about 5.6 times the radius of the Sun and 7 times the Sun's mass. It is radiating over two thousand times the luminosity of the Sun from its photosphere at an effective temperature of 18,900 K.

References

{{Reflist|refs=

{{cite simbad | title=HD 79447 | access-date=2020-01-25 }}

{{cite XHIP|45101|mode=cs2|postscript=.}}

{{citation

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| url=https://www.aanda.org/articles/aa/full/2007/41/aa8357-07/aa8357-07.html

| journal=Astronomy and Astrophysics | arxiv=0708.1752

| volume=474 | issue=2 | pages=653–664 | year=2007

| bibcode=2007A&A...474..653V | bibcode-access=free

| doi=10.1051/0004-6361:20078357 | doi-access=free }}

{{citation

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| last3=Oksala | first3=Mary E. | last4=Blazère | first4=Aurore

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| issue=1 | bibcode=2006MNRAS.371..252L | arxiv=astro-ph/0606149

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{{citation | postscript=.

| title=A spectroscopic survey on the multiplicity of high-mass stars

| journal=Monthly Notices of the Royal Astronomical Society

| last1=Chini | first1=R. | last2=Hoffmeister | first2=V. H.

| last3=Nasseri | first3=A. | last4=Stahl | first4=O.

| last5=Zinnecker | first5=H. | display-authors=1

| volume=424 | issue=3 | pages=1925–1929 | year=2012

| bibcode=2012MNRAS.424.1925C | arxiv=1205.5238

| doi=10.1111/j.1365-2966.2012.21317.x | doi-access=free

| s2cid=119120749

}}

{{citation

| display-authors=1 | last1=Tetzlaff | first1=N.

| last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M.

| title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun

| journal=Monthly Notices of the Royal Astronomical Society

| volume=410 | issue=1 | pages=190–200 | date=January 2011

| bibcode=2011MNRAS.410..190T | arxiv=1007.4883

| doi=10.1111/j.1365-2966.2010.17434.x | doi-access=free | s2cid=118629873 | postscript=. }}

{{citation

| display-authors=1 | last1=Pasinetti Fracassini | first1=L. E.

| last2=Pastori | first2=L. | last3=Covino | first3=S. | last4=Pozzi | first4=A.

| title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)

| edition=Third | journal=Astronomy and Astrophysics

| volume=367 | issue=2 | pages=521–524 | date=February 2001

| bibcode=2001A&A...367..521P | arxiv=astro-ph/0012289

| doi=10.1051/0004-6361:20000451 | s2cid=425754 | postscript=. }}

{{citation

| last1=Uesugi | first1=Akira | last2=Fukuda | first2=Ichiro

| title=Catalogue of rotational velocities of the stars

| journal=Contributions from the Institute of Astrophysics and Kwasan Observatory

| date=1970 | publisher=University of Kyoto

| bibcode=1970crvs.book.....U | postscript=. }}

}}

{{Stars of Carina}}

{{DEFAULTSORT:HD 79447}}

Category:B-type main-sequence stars

Category:Lower Centaurus Crux

Category:Carina (constellation)

Carinae, i

Category:Durchmusterung objects

079447

045101

3663