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{{Short description|Star in the constellation Centaurus}}
{{Starbox begin
{{Starbox begin
| name=HD 107914
| name=HD 107914
}}
}}
{{Starbox observe 2s
{{Starbox observe
| epoch = [[J2000.0]]<!--Epoch of observation-->
| epoch = [[J2000.0]]
⚫
| constell = [[Centaurus]]
| equinox = [[J2000.0]]<!--Equinox of coordinates (defaults to epoch)-->
⚫
| ra = {{RA|12|24|12.93679}}<ref name = GaiaDR3/>
⚫
| constell = [[Centaurus]]<!--Constellation name-->
| ra={{RA|12|24|12.937}}
| dec = {{DEC|-38|54|49.7344}}<ref name = GaiaDR3/>
| appmag_v = 6.87{{±|0.01}}<ref name = Tycho2000/>
| dec={{DEC|-38|54|49.73}}
| appmag_v=6.886
| component1 = CCDM J12242-3855A<!--Name of the first component-->
⚫
| ra1 = {{RA|12|24|13.0}}<ref name=VizieR>{{cite web
| url=http://vizier.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J12242-3855AB
⚫
| title=CCDM J12242-3855. Vizier detailed page.
| work=[[Vizier]]
| publisher=[[Centre de Données astronomiques de Strasbourg]]
⚫
| accessdate=2010-04-13
}}</ref><!--Right Ascension of the first component-->
| dec1 = {{DEC|–38|54|50}}<ref name=VizieR /><!--Declination of the first component-->
| appmag_v1 = 7.0<ref name=VizieR /><!--Apparent magnitude of the first component (Johnson-Cousins V system)-->
| component2 = CCDM J12242-3855B<!--Name of the second component-->
| ra2 = {{RA|12|24|13.2}}<ref name=VizieR /><!--Right Ascension of the second component-->
| dec2 = {{DEC|–38|54|47}}<ref name=VizieR /><!--Declination of the second component-->
| appmag_v2 = 12.8<ref name=VizieR /><!--Apparent magnitude of the second component (Johnson-Cousins V system)-->
}}
}}
{{Starbox character
{{Starbox character
| class=A7/8III<ref name=SIMBAD>{{cite simbad
| type = [[main sequence]]<ref name = GaiaDR3/>
| class=A7/8 III<ref name = Houk1982/>
| title=CCDM J12242-3855AB
| b-v = +0.28<ref name = Tycho2000/>
| accessdate=2010-04-13
⚫
}}</ref>
⚫
| b-v=0.272<ref name=VizieR2>{{cite web
| url=http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%2060503
| title=HIP 60503. VizieR detailed page.
| work=[[Vizier]]
| publisher=[[Centre de Données astronomiques de Strasbourg]]
| accessdate=2010-04-13
}}</ref>
| v-i= 0.31
}}
}}
{{Starbox astrometry
{{Starbox astrometry
| prop_mo_ra=+0.55<ref name=HIP2>{{cite web
| prop_mo_ra = +0.085
| prop_mo_dec = +0.966
| url=http://cdsarc.u-strasbg.fr/viz-bin/Cat?cat=HIP2&find=+
| pm_footnote = <ref name = GaiaDR3/>
| title=Detailed description of I/311.
⚫
| parallax = 12.5254
| work=[[Hipparcos]]
⚫
| p_error = 0.0221
| publisher=[[Centre de Données astronomiques de Strasbourg]]
| parallax_footnote = <ref name = GaiaDR3/>
| accessdate=2010-04-13
| absmag_v = +2.41<ref name = Anderson2012/>
}}</ref>
}}
| prop_mo_dec=–0.02<ref name=HIP2 />
{{Starbox detail
⚫
| parallax=12.77
| source = <ref name = GaiaDR3/>
⚫
| p_error=0.46
| mass = 1.6
| temperature = 7,261
| luminosity = 8.9
| radius =1.9
| gravity = 4.01
| metal_fe = −0.62
| age_gyr = 1.2
}}
}}
{{Starbox catalog
{{Starbox catalog
| names=[[Catalogue of Components of Double and Multiple Stars|CCDM]] J12242-3855AB, [[Hipparcos|HIP]] 60503, [[Henry Draper Catalogue|HD]] 107914, [[Tycho-2 Catalogue|TYC]] 7757-196-1
| names=[[Catalogue of Components of Double and Multiple Stars|CCDM]] J12242-3855AB, [[Durchmusterung|CD]]−38°7710, [[Hipparcos|HIP]] 60503, [[Henry Draper Catalogue|HD]] 107914, [[SAO Catalogue|SAO]] 203431<ref name=SIMBAD/>
}}
}}
{{Starbox reference
{{Starbox reference
Line 58: Line 42:
{{Starbox end}}
{{Starbox end}}


'''HD 107914''' is a [[binary star]] in the constellation [[Centaurus]], with an estimated distance of {{Convert|255.5|ly|pc|lk=on}}<ref name=Potemine2010/> from the Solar System. The primary has a stellar classification of A7-8&nbsp;III, making it a [[giant star]].
'''HD 107914''' is the primary component of a [[binary star system]] in the constellation [[Centaurus]], with an estimated distance of {{Convert|255.5|ly|pc|lk=on}}<ref name=Potemine2010/> from the [[Solar System]]. It has a stellar classification of A7-8&nbsp;III, making it a [[giant star]].


Measurement of the [[proper motion]] of this system show that it has a low transverse velocity relative to the Sun. For this reason, it has been compared to the hypothetical "[[Nemesis (hypothetical star)|Nemesis]]" star since it may pass through the [[Oort cloud]] in the future.<ref name=Potemine2010>{{cite arXiv
Measurement of the [[proper motion]] of this system show that it has a low transverse velocity relative to the Sun. For this reason, it has been compared to the hypothetical "[[Nemesis (hypothetical star)|Nemesis]]" star since it may pass through the [[Oort cloud]] in the future.<ref name=Potemine2010>{{cite arXiv
Line 65: Line 49:
| eprint=1003.5308
| eprint=1003.5308
| title=Giant Nemesis candidate HD 107914 / HIP 60503 for the perforation of Oort cloud
| title=Giant Nemesis candidate HD 107914 / HIP 60503 for the perforation of Oort cloud
| class=astro-ph.SR
| class=astro-ph.SR <!--bibcode=2010arXiv1003.5308P-->
⚫
}}</ref> The star is too far away to be a companion to the Sun. However, preliminary measurements of the [[H-alpha line]] in the star's [[stellar spectrum|spectrum]] show a [[radial velocity]] in the range from –13 to +3&nbsp;km/s. (This result was obtained by M. Muterspaugh and M. Williamson at a robotic spectroscopic telescope in Arizona.<ref>{{cite journal |doi=10.1086/521231 |last=Eaton |first=J. A. |author2=Williamson M. H. |title=The Tennessee State University Automatic Spectroscopic Telescope: Data Processing and Velocity Variation of Cool Giants|date=2007 |journal=Publications of the Astronomical Society of the Pacific |volume=119 |issue=858 |pages=886–897|bibcode = 2007PASP..119..886E |s2cid=6497781 |doi-access=free }}</ref>) Such values for the [[radial velocity]] are too small to produce a likely collision course with the [[Solar System]]. For example, if ''V<sub>r</sub>'' = –10&nbsp;km/s, then the distance from the Sun to HD 107914 at closest approach will be about {{Convert|5.2|ly|pc|abbr=on|lk=off}}.
| <!--bibcode=2010arXiv1003.5308P-->
⚫
}}</ref> The star is too far away to be a companion to the Sun. However, preliminary measurements of the [[H-alpha line]] in the star's [[spectrum]] show a [[radial velocity]] in the range from –13 to +3&nbsp;km/s. (This result was obtained by M. Muterspaugh and M. Williamson at a robotic spectroscopic telescope in Arizona.<ref>{{cite journal |doi=10.1086/521231 |last=Eaton |first=J. A. |author2=Williamson M. H. |title=The Tennessee State University Automatic Spectroscopic Telescope: Data Processing and Velocity Variation of Cool Giants|date=2007 |journal=PASP |volume=119 |pages=886–897|bibcode = 2007PASP..119..886E }}</ref>) Such values for the [[radial velocity]] are too small to produce a likely collision course with the [[Solar System]]. For example, if ''V<sub>r</sub>'' = –10&nbsp;km/s, then the distance from the Sun to HD 107914 at closest approach will be about {{Convert|5.2|ly|pc|abbr=on|lk=off}}.


==References==
==References==
{{reflist}}
{{reflist||refs=

<ref name = GaiaDR3>{{Cite DR3|6150582597406438016}}</ref>

<ref name = Tycho2000>{{cite journal | last1 = Høg | first1 = E. | last2 = Fabricius | first2 = C. | last3 = Makarov | first3 = V. V. | last4 = Urban | first4 = S. | last5 = Corbin | first5 = T. | last6 = Wycoff | first6 = G. | last7 = Bastian | first7 = U. | last8 = Schwekendiek | first8 = P. | last9 = Wicenec | first9 = A. | title = The Tycho-2 catalogue of the 2.5 million brightest stars |journal=Astronomy and Astrophysics | date = March 2000 | volume = 355 | pages = L27–L30 | bibcode = 2000A&A...355L..27H | issn = 0004-6361}}</ref>

<ref name = Houk1982>{{cite book | last1 = Houk | first1 = N. | title = Michigan Catalogue of Two-dimensional Spectral Types for the HD stars III: Declinations −40° to −26° | date = 1982 | bibcode = 1982mcts.book.....H }}</ref>

<ref name = Anderson2012>{{cite journal | last1 = Anderson | first1 = E. | last2 = Francis | first2 = Ch. | title = XHIP: An extended hipparcos compilation | journal = Astronomy Letters | date = May 2012 | volume = 38 | issue = 5 | pages = 331–346 | issn = 1063-7737 | eissn = 1562-6873 | doi = 10.1134/S1063773712050015 | bibcode = 2012AstL...38..331A | arxiv = 1108.4971| s2cid = 119257644 }}</ref>

⚫
<ref name=SIMBAD>{{cite simbad
⚫
| title=CCDM J12242-3855AB
⚫
| access-date=2010-04-13
⚫
}}</ref>

}}


{{Stars of Centaurus}}
{{Stars of Centaurus}}


{{DEFAULTSORT:HD 107914}}
⚫
[[Category:Binary stars]]
[[Category:Centaurus (constellation)]]
[[Category:Double stars]]
⚫
[[Category:Centaurus]]
[[Category:A-type giants]]
[[Category:A-type giants]]
[[Category:Durchmusterung objects]]
[[Category:Henry Draper Catalogue objects|107914]]
[[Category:Henry Draper Catalogue objects|107914]]
[[Category:Hipparcos objects|060503]]

Latest revision as of 07:32, 24 August 2023

HD 107914
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 12h 24m 12.93679s[1]
Declination −38° 54′ 49.7344″[1]
Apparent magnitude (V) 6.87±0.01[2]
Characteristics
Evolutionary stage main sequence[1]
Spectral type A7/8 III[3]
B−V color index +0.28[2]
Astrometry
Proper motion (μ) RA: +0.085 mas/yr[1]
Dec.: +0.966 mas/yr[1]
Parallax (π)12.5254 ± 0.0221 mas[1]
Distance260.4 ± 0.5 ly
(79.8 ± 0.1 pc)
Absolute magnitude (MV)+2.41[4]
Details[1]
Mass1.6 M☉
Radius1.9 R☉
Luminosity8.9 L☉
Surface gravity (log g)4.01 cgs
Temperature7,261 K
Metallicity [Fe/H]−0.62 dex
Age1.2 Gyr
Other designations
CCDM J12242-3855AB, CD−38°7710, HIP 60503, HD 107914, SAO 203431[5]
Database references
SIMBADdata

HD 107914 is the primary component of a binary star system in the constellation Centaurus, with an estimated distance of 255.5 light-years (78.3 pc)[6] from the Solar System. It has a stellar classification of A7-8 III, making it a giant star.

Measurement of the proper motion of this system show that it has a low transverse velocity relative to the Sun. For this reason, it has been compared to the hypothetical "Nemesis" star since it may pass through the Oort cloud in the future.[6] The star is too far away to be a companion to the Sun. However, preliminary measurements of the H-alpha line in the star's spectrum show a radial velocity in the range from –13 to +3 km/s. (This result was obtained by M. Muterspaugh and M. Williamson at a robotic spectroscopic telescope in Arizona.[7]) Such values for the radial velocity are too small to produce a likely collision course with the Solar System. For example, if Vr = –10 km/s, then the distance from the Sun to HD 107914 at closest approach will be about 5.2 ly (1.6 pc).

References

[edit]
  1. ^ a b c d e f Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27 – L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
  3. ^ Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars III: Declinations −40° to −26°. Bibcode:1982mcts.book.....H.
  4. ^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
  5. ^ "CCDM J12242-3855AB". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2010-04-13.
  6. ^ a b Potemine, Igor Yu. (2010-04-13). "Giant Nemesis candidate HD 107914 / HIP 60503 for the perforation of Oort cloud". arXiv:1003.5308 [astro-ph.SR].
  7. ^ Eaton, J. A.; Williamson M. H. (2007). "The Tennessee State University Automatic Spectroscopic Telescope: Data Processing and Velocity Variation of Cool Giants". Publications of the Astronomical Society of the Pacific. 119 (858): 886–897. Bibcode:2007PASP..119..886E. doi:10.1086/521231. S2CID 6497781.
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