17 Eridani
{{short description|Star in the constellation Eridanus}}{{Distinguish|Nu Eridani{{!}}ν (Nu) Eridani}}{{Starbox begin}}
{{Starbox observe
| epoch = J2000.0
| constell = Eridanus
| dec = {{DEC|−05|04|30.5239}}
}}
{{Starbox character
| class = B9 III or B9Vs
| u-b =
| variable =
}}
{{Starbox astrometry
| radial_v = {{Val|+15.0|4.2}}
| parallax = 8.07
| p_error = 0.20
}}
{{Starbox detail
| gravity = {{Val|3.603|0.017}}
| luminosity = {{Val|267.9|15.2|14.4}}
| temperature = {{Val|11143|51|fmt=commas}}
| metal_fe =
}}
{{Starbox catalog
| names = {{odlist | B=v Eri | F=17 Eri | BD=−05°674 | FK=1097 | HD=21790 | HIP=16341 | HR=1070 | SAO=130528 }}
}}
{{Starbox reference
| Simbad=17+Eri
}}
{{Starbox end}}
17 Eridani is a single star in the equatorial constellation of Eridanus. It has the Bayer designation v Eridani (not to be confused with ν (nu) Eri), while 17 Eridani is the Flamsteed designation. This object is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.74. It is moving further from the Earth with a heliocentric radial velocity of around +15 km/s.
Houk and Swift (1999) found a stellar classification of B9 III for this star, while Cowley et al. (1969) show B9 Vs. Stellar models suggest this is a main-sequence star, which indicates it is generating energy through hydrogen fusion at its core. It is about 178 million years old with 3.55 times the mass of the Sun and around 3.2 times the size of the Sun. The star is radiating 268 times the Sun's luminosity from its photosphere at an effective temperature of {{val|11143|ul=K|fmt=commas}}. These coordinates are a source for X-ray emission, which may be coming from an unresolved companion.
References
{{reflist|30em|refs=
{{cite simbad | title=17 Eri | access-date=2019-05-27 }}
| last1=Van Leeuwen | first1=F.
| title=Validation of the new Hipparcos reduction
| journal=Astronomy and Astrophysics
| volume=474 | issue=2 | pages=653–664 | year=2007
| arxiv=0708.1752 | bibcode=2007A&A...474..653V
| doi=10.1051/0004-6361:20078357 | s2cid=18759600
| postscript=. }}
| title=XHIP: An extended hipparcos compilation
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| journal=Astronomy Letters | postscript=.
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | arxiv=1108.4971
| doi=10.1134/S1063773712050015 | s2cid=119257644 }}
| title=Search for low-mass PMS companions around X-ray selected late B stars
| last1=Hubrig | first1=S. | last2=Le Mignant | first2=D.
| last3=North | first3=P. | last4=Krautter | first4=J.
| journal=Astronomy and Astrophysics | display-authors=1
| volume=372 | pages=152–164 | date=June 2001
| doi=10.1051/0004-6361:20010452 | bibcode=2001A&A...372..152H
| arxiv=astro-ph/0103201 | s2cid=17507782 | postscript=. }}
| title=Michigan catalogue of two-dimensional spectral types for the HD Stars
| volume=5 | year=1999
| journal=Michigan Spectral Survey
| last1=Houk | first1=N. | last2=Swift | first2=C.
| bibcode=1999MSS...C05....0H | postscript=. }}
| last1=Zorec | first1=J. | last2=Royer | first2=F.
| last3=Asplund | first3=Martin | last4=Cassisi | first4=Santi
| last5=Ramirez | first5=Ivan | last6=Melendez | first6=Jorge
| last7=Bensby | first7=Thomas | last8=Feltzing | first8=Sofia
| title=Rotational velocities of A-type stars. IV. Evolution of rotational velocities
| display-authors=1 | journal=Astronomy and Astrophysics
| volume=537 | pages=A120 | year=2012
| arxiv=1201.2052 | doi=10.1051/0004-6361/201117691
| bibcode=2012A&A...537A.120Z | s2cid=55586789 | postscript=. }}
| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.
| title=A catalogue of multiplicity among bright stellar systems
| journal=Monthly Notices of the Royal Astronomical Society
| volume=389 | issue=2 | pages=869–879 | date=September 2008
| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | postscript=.
| bibcode=2008MNRAS.389..869E |arxiv = 0806.2878 | s2cid=14878976 }}
| last1=Cowley | first1=A. | last2=Cowley | first2=C.
| last3=Jaschek | first3=M. | last4=Jaschek | first4=C.
| title=A study of the bright A stars. I. A catalogue of spectral classifications
| display-authors=1 | journal=Astronomical Journal
| volume=74 | pages=375–406 | date=April 1969
| doi=10.1086/110819 | bibcode=1969AJ.....74..375C }}
| display-authors=1 | last1=Huang | first1=Wenjin
| last2=Gies | first2=D. R. | last3=McSwain | first3=M. V.
| title=A Stellar Rotation Census of B Stars: From ZAMS to TAMS
| journal=The Astrophysical Journal
| volume=722 | issue=1 | pages=605–619 | date=October 2010
| doi=10.1088/0004-637X/722/1/605 | postscript=.
| bibcode=2010ApJ...722..605H | arxiv=1008.1761 | s2cid=118532653 }}
| 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
| doi=10.1051/0004-6361:20000451 | postscript=.
| bibcode=2001A&A...367..521P | arxiv=astro-ph/0012289 | s2cid=425754 }}
}}
{{Stars of Eridanus}}
{{DEFAULTSORT:17 Eridani}}
Category:B-type main-sequence stars
Category:Eridanus (constellation)