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{{short description|Star in the constellation Cancer}}
{{DISPLAYTITLE:Upsilon<sup>1</sup> Cancri}}
{{DISPLAYTITLE:Upsilon<sup>1</sup> Cancri}}
{{other stars by Bayer designation|Upsilon Cancri{{!}}υ Cancri}}
{{other stars by Bayer designation|Upsilon Cancri{{!}}υ Cancri}}
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}}
}}
{{starbox end}}
{{starbox end}}
'''Upsilon<sup>1</sup> Cancri''', [[Latinized]] from υ<sup>1</sup> Cancri, is the [[Bayer designation]] for a solitary,<ref name=Eggleton2008/> yellow-white hued [[star]] in the [[constellation]] [[Cancer (constellation)|Cancer]]. It is faintly visible with the naked eye, having an [[apparent visual magnitude]] of +5.7.<ref name=Hog2000/> Based upon an annual [[stellar parallax|parallax shift]] of 13.05&nbsp;[[milliarcsecond|mas]] as seen from Earth,<ref name=vanLeeuwen2007/> this system is roughly 250&nbsp;[[light year]]s from the [[Sun]].
'''Upsilon<sup>1</sup> Cancri''', [[Latinisation of names|Latinised]] from υ<sup>1</sup> Cancri, is the [[Bayer designation]] for a solitary,<ref name=Eggleton2008/> yellow-white-hued [[star]] in the [[constellation]] [[Cancer (constellation)|Cancer]]. It is faintly visible with the naked eye, having an [[apparent visual magnitude]] of +5.7.<ref name=Hog2000/> Based upon an annual [[stellar parallax|parallax shift]] of 13.05&nbsp;[[milliarcsecond|mas]] as seen from Earth,<ref name=vanLeeuwen2007/> this system is roughly 250&nbsp;[[light-year]]s from the [[Sun]].


This object has a [[stellar classification]] of F0&nbsp;IIIn, indicating it is an [[F-type star|F-type]] [[giant star]].<ref name=Eggleton2008/> The 'n' suffix indicates "nebulous" [[absorption line]]s due to rapid rotation, and it shows a relatively high [[projected rotational velocity]] of 109.2&nbsp;km/s.<ref name=Schroeder2009/> It is a [[variable star]] of unknown type that varies in brightness with an amplitude of 0.05 magnitude.<ref name=Adelman2000/> The star is about 570<ref name=David2015/> million years old and it has an estimated mass of 1.47<ref name=David2015/> times the [[mass of the Sun]]. On average, it is radiating 25<ref name=Anderson2012/> times the [[Sun's luminosity]] from its [[photosphere]] at an [[effective temperature]] of 7,240&nbsp;K.<ref name=David2015/>
This object has a [[stellar classification]] of F0&nbsp;IIIn, indicating it is an [[F-type star|F-type]] [[giant star]].<ref name=Eggleton2008/> The 'n' suffix indicates "nebulous" [[absorption line]]s due to rapid rotation, and it shows a relatively high [[projected rotational velocity]] of 109.2&nbsp;km/s.<ref name=Schroeder2009/> It is a [[variable star]] of unknown type that varies in brightness with an amplitude of 0.05 magnitude.<ref name=Adelman2000/> The star is about 570<ref name=David2015/> million years old and it has an estimated mass of 1.47<ref name=David2015/> times [[solar mass|that of the Sun]]. On average, it is radiating 25<ref name=Anderson2012/> times the [[Sun's luminosity]] from its [[photosphere]] at an [[effective temperature]] of {{val|7240|ul=K|fmt=commas}}.<ref name=David2015/>


==References==
==References==
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| volume=474 | issue=2 | pages=653–664 | date=2007
| volume=474 | issue=2 | pages=653–664 | date=2007
| arxiv=0708.1752 | bibcode=2007A&A...474..653V
| arxiv=0708.1752 | bibcode=2007A&A...474..653V
| doi=10.1051/0004-6361:20078357 | postscript=. }}</ref>
| doi=10.1051/0004-6361:20078357 | s2cid=18759600 | postscript=. }}</ref>


<ref name=Anderson2012>{{citation
<ref name=Anderson2012>{{citation
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| volume=38 | issue=5 | pages=331 | year=2012
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015
| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015
| arxiv=1108.4971 | postscript=. }}</ref>
| arxiv=1108.4971 | s2cid=119257644 | postscript=. }}</ref>


<ref name=Adelman2000>{{citation
<ref name=Adelman2000>{{citation
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| journal=Information Bulletin on Variable Stars
| journal=Information Bulletin on Variable Stars
| issue=4969 | page=1 | date=October 2000
| issue=4969 | page=1 | date=October 2000
| bibcode=2000IBVS.4969....1A | postscript=. }}</ref>
| volume=4969 | bibcode=2000IBVS.4969....1A | postscript=. }}</ref>


<ref name=Eggleton2008>{{citation
<ref name=Eggleton2008>{{citation
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| journal=[[Monthly Notices of the Royal Astronomical Society]]
| journal=[[Monthly Notices of the Royal Astronomical Society]]
| volume=389 | issue=2 | pages=869–879 | date=September 2008
| volume=389 | issue=2 | pages=869–879 | date=September 2008
| doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E
| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E
| arxiv=0806.2878 | postscript=. }}</ref>
| arxiv=0806.2878 | s2cid=14878976 | postscript=. }}</ref>


<ref name=deBruijne2012>{{citation
<ref name=deBruijne2012>{{citation
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| volume=546 | id=A61 | pages=14 | date=October 2012
| volume=546 | id=A61 | pages=14 | date=October 2012
| doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D
| doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D
| arxiv=1208.3048 | postscript=. }}</ref>
| arxiv=1208.3048 | s2cid=59451347 | postscript=. }}</ref>


<ref name=David2015>{{citation
<ref name=David2015>{{citation
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| volume=804 | issue=2 | pages=146 | year=2015
| volume=804 | issue=2 | pages=146 | year=2015
| bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146
| bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146
| arxiv=1501.03154 | postscript=. }}</ref>
| arxiv=1501.03154 | s2cid=33401607 | postscript=. }}</ref>


<ref name=Schroeder2009>{{citation | last1=Schröder | first1=C. | last2=Reiners | first2=Ansgar | last3=Schmitt | first3=Jürgen H. M. M. | title=Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo | journal=Astronomy and Astrophysics | volume=493 | issue=3 | pages=1099–1107 | date=January 2009 | doi=10.1051/0004-6361:200810377 | bibcode=2009A&A...493.1099S | doi-access=free | url=http://goedoc.uni-goettingen.de/goescholar/bitstream/handle/1/9690/aa10377-08.pdf?sequence=2 }}{{Dead link|date=September 2023 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
<ref name=Schroeder2009>{{citation
| display-authors=1 | last1=Schröder | first1=C.
| last2=Reiners | first2=A. | last3=Schmitt | first3=J. H. M. M.
| title=Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo
| journal=Astronomy and Astrophysics | date=January 2009
| volume=493 | issue=3 | pages=1099–1107 | postscript=.
| doi=10.1051/0004-6361:200810377 | bibcode=2009A&A...493.1099S | url=http://goedoc.uni-goettingen.de/goescholar/bitstream/handle/1/9690/aa10377-08.pdf?sequence=2}}</ref>


<ref name=Hog2000>{{citation
<ref name=Hog2000>{{citation
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<ref name=SIMBAD>{{cite simbad
<ref name=SIMBAD>{{cite simbad
| title=ups01 Cnc
| title=ups01 Cnc
| accessdate=2017-06-10 | postscript=. }}</ref>
| access-date=2017-06-10 }}</ref>


}}
}}
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{{Stars of Cancer|state=collapsed}}
{{Stars of Cancer|state=collapsed}}


{{DEFAULTSORT:Upsilon1 Cancri}}
[[Category:F-type giants]]
[[Category:F-type giants]]
[[Category:Bayer objects|Cancri, Upsilon1]]
[[Category:Bayer objects|Cancri, Upsilon1]]
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[[Category:Henry Draper Catalogue objects|072041]]
[[Category:Henry Draper Catalogue objects|072041]]
[[Category:Hipparcos objects|041816]]
[[Category:Hipparcos objects|041816]]
[[Category:HR objects|3355]]
[[Category:Bright Star Catalogue objects|3355]]

Latest revision as of 11:08, 22 August 2024

For other stars with this Bayer designation, see υ Cancri.
Upsilon1 Cancri
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cancer
Right ascension 08h 31m 30.51925s[1]
Declination +24° 04′ 51.9890″[1]
Apparent magnitude (V) +5.694[2]
Characteristics
Spectral type F0 IIIn[3]
B−V color index +0.309[2]
Astrometry
Radial velocity (Rv)+19.0±4.3[4] km/s
Proper motion (μ) RA: −81.36[1] mas/yr
Dec.: −44.57[1] mas/yr
Parallax (π)13.05 ± 0.29 mas[1]
Distance250 ± 6 ly
(77 ± 2 pc)
Absolute magnitude (MV)+1.29[5]
Details
Mass1.47[6] M☉
Luminosity25[5] L☉
Surface gravity (log g)3.51[7] cgs
Temperature7,240±246[6] K
Rotational velocity (v sin i)109.2[7] km/s
Age570[6] Myr
Other designations
υ1 Cnc, 30 Cancri, BD+24° 1940, FK5 2666, HD 72041, HIP 41816, HR 3355, SAO 80229[8]
Database references
SIMBADdata

Upsilon1 Cancri, Latinised from υ1 Cancri, is the Bayer designation for a solitary,[3] yellow-white-hued star in the constellation Cancer. It is faintly visible with the naked eye, having an apparent visual magnitude of +5.7.[2] Based upon an annual parallax shift of 13.05 mas as seen from Earth,[1] this system is roughly 250 light-years from the Sun.

This object has a stellar classification of F0 IIIn, indicating it is an F-type giant star.[3] The 'n' suffix indicates "nebulous" absorption lines due to rapid rotation, and it shows a relatively high projected rotational velocity of 109.2 km/s.[7] It is a variable star of unknown type that varies in brightness with an amplitude of 0.05 magnitude.[9] The star is about 570[6] million years old and it has an estimated mass of 1.47[6] times that of the Sun. On average, it is radiating 25[5] times the Sun's luminosity from its photosphere at an effective temperature of 7,240 K.[6]

References

[edit]
  1. ^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
  2. ^ a b c Høg, E.; et al. (March 2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy and Astrophysics, 355: L27–L30, Bibcode:2000A&A...355L..27H, doi:10.1888/0333750888/2862.
  3. ^ a b c Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
  4. ^ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
  5. ^ a b c Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
  6. ^ a b c d e f David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
  7. ^ a b c Schröder, C.; Reiners, Ansgar; Schmitt, Jürgen H. M. M. (January 2009), "Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo" (PDF), Astronomy and Astrophysics, 493 (3): 1099–1107, Bibcode:2009A&A...493.1099S, doi:10.1051/0004-6361:200810377[permanent dead link]
  8. ^ "ups01 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-10.
  9. ^ Adelman, S. J. (October 2000), "On the Variability of A3-F0 Luminosity Class III-V Stars", Information Bulletin on Variable Stars, 4969 (4969): 1, Bibcode:2000IBVS.4969....1A.
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