56 Ursae Majoris: Difference between revisions

56 Ursae Majoris
Observation data; Epoch J2000 Equinox J2000
Constellation	Ursa Major
Right ascension	11h 22m 49.58373s
Declination	+43° 28′ 57.7267″
Apparent magnitude (V)	5.03
Characteristics
Spectral type	G7IIIBa0.3
U−B color index	+0.82
B−V color index	+1.02
Astrometry
Radial velocity (Rv)	1.01 ± 0.05 km/s
Proper motion (μ)	RA: -37.42 mas/yr ; Dec.: -14.26 mas/yr
Parallax (π)	6.12 ± 0.27 mas
Distance	530 ± 20 ly ; (163 ± 7 pc)
Orbit
Period (P)	16911+438; −401 d
Semi-major axis (a)	22.9+1.0; −1.1 au
Eccentricity (e)	0.562+0.012; −0.012
Inclination (i)	68+3.6; −3.4°
Longitude of the node (Ω)	60+3; −3°
Periastron epoch (T)	2468401+432; −385
Argument of periastron (ω); (secondary)	286+2.3; −2.3°
Details
56 UMa A
Mass	4.3 ± 0.2 M☉
Surface gravity (log g)	2.3 ± 0.6 cgs
Temperature	4917 ± 34 K
56 UMa B
Mass	1.31+0.11; −0.12 M☉
Other designations
	BD+44° 2083, FK5 2908, HD 98839, HIP 55560, HR 4392, SAO 43719
Database references
SIMBAD	data

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56 Ursae Majoris (56 UMa) is a star in the constellation Ursa Major. Its apparent magnitude is 5.03.^[2] It is a single-lined spectroscopic binary with an orbital period of about 45 years.^[5] The companion star is likely a heavy neutron star born by a supernova that exploded around 100,000 years ago.^[6]

References

^ ^a ^b ^c ^d ^e 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.
^ ^a ^b Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
^ Lu, Phillip K. (1991). "Taxonomy of barium stars". Astronomical Journal. 101: 2229–2254. Bibcode:1991AJ....101.2229L. doi:10.1086/115845.
^ ^a ^b Fernie, J. D. (1983). "New UBVRI photometry for 900 supergiants". Astrophysical Journal Supplement Series. 52 (7–22): 7. Bibcode:1983ApJS...52....7F. doi:10.1086/190856.
^ ^a ^b Pourbaix, D.; et al. (2004). "S_B⁹: The ninth catalogue of spectroscopic binary orbits". Astronomy and Astrophysics. 424 (2): 727–732. arXiv:astro-ph/0406573. Bibcode:2004A&A...424..727P. doi:10.1051/0004-6361:20041213. S2CID 119387088.
^ ^a ^b ^c Escorza, A.; Karinkuzhi, D.; Jorissen, A.; Van Eck, S.; Schmelz, J. T.; Verschuur, G. L.; Boffin, H. M. J.; De Rosa, R. J.; Van Winckel, H. (2023). "A neutron star candidate in the long-period binary 56 UMa". Astronomy and Astrophysics. 670: L14. arXiv:2301.06531. Bibcode:2023A&A...670L..14E. doi:10.1051/0004-6361/202245796. S2CID 255941814.

This giant-star-related article is a stub. You can help Wikipedia by expanding it.

[HIP-1] 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.

[Ducati-2] Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.

[3] Lu, Phillip K. (1991). "Taxonomy of barium stars". Astronomical Journal. 101: 2229–2254. Bibcode:1991AJ....101.2229L. doi:10.1086/115845.

[Fernie-4] Fernie, J. D. (1983). "New UBVRI photometry for 900 supergiants". Astrophysical Journal Supplement Series. 52 (7–22): 7. Bibcode:1983ApJS...52....7F. doi:10.1086/190856.

[SB9-5] Pourbaix, D.; et al. (2004). "S_B⁹: The ninth catalogue of spectroscopic binary orbits". Astronomy and Astrophysics. 424 (2): 727–732. arXiv:astro-ph/0406573. Bibcode:2004A&A...424..727P. doi:10.1051/0004-6361:20041213. S2CID 119387088.

[Escorza-6] Escorza, A.; Karinkuzhi, D.; Jorissen, A.; Van Eck, S.; Schmelz, J. T.; Verschuur, G. L.; Boffin, H. M. J.; De Rosa, R. J.; Van Winckel, H. (2023). "A neutron star candidate in the long-period binary 56 UMa". Astronomy and Astrophysics. 670: L14. arXiv:2301.06531. Bibcode:2023A&A...670L..14E. doi:10.1051/0004-6361/202245796. S2CID 255941814.

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@@ Line 1: / Line 1: @@
+{{short description|Star in the constellation Ursa Major}}
-{{starbox short
+{{Starbox begin|name=56 Ursae Majoris}}
-|constell= [[Ursa Major (constellation)|Ursa Major]]
+{{Starbox observe
-|name= 56 Ursae Majoris
+|epoch=[[J2000]]
-|type= G7.5IIIa <ref name=SIMBAD>SIMBAD, [http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=56+Ursae+Majoris&submit=SIMBAD+search 56 Ursae Majoris] (accessed 3 March 2013)</ref>
+|constell=[[Ursa Major]]
-|ra=   {{RA|11|22|49.58373}} <ref name=SIMBAD/>
+|ra={{RA|11|22|49.58373}}<ref name=HIP>{{cite journal|title=Validation of the new Hipparcos reduction|url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL|author=van Leeuwen, F. |journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653–664|date=2007|arxiv=0708.1752|bibcode=2007A&A...474..653V|doi=10.1051/0004-6361:20078357|s2cid = 18759600}}</ref>
-|dec=  {{DEC|+43|28|57.2767}} <ref name=SIMBAD/>
+|dec={{DEC|+43|28|57.7267}}<ref name=HIP/>
+|appmag_v=5.03<ref name=Ducati>{{cite journal|bibcode=2002yCat.2237....0D|title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system|journal=CDS/ADC Collection of Electronic Catalogues|volume=2237|author1=Ducati, J. R.|year=2002}}</ref>
 }}
+{{Starbox character
-'''56 Ursae Majoris''' ('''56 UMa''') is a [[star]] in the [[constellation]] [[Ursa Major (constellation)|Ursa Major]]. Its [[apparent magnitude]] is 4.99.
+|class=G7IIIBa0.3<ref>{{cite journal|bibcode=1991AJ....101.2229L|title=Taxonomy of barium stars|author=Lu, Phillip K.|journal=Astronomical Journal|volume=101|pages=2229–2254|date=1991|doi=10.1086/115845|doi-access=free}}</ref>
+|b-v=+1.02<ref name=Fernie>{{cite journal|bibcode=1983ApJS...52....7F|doi=10.1086/190856|title=New UBVRI photometry for 900 supergiants|author=Fernie, J. D.|journal=Astrophysical Journal Supplement Series|volume=52|issue=7–22|date=1983|page=7|doi-access=free}}</ref>
+|u-b=+0.82<ref name=Fernie/>
+}}
+{{Starbox astrometry
+|radial_v=1.01 ± 0.05<ref name=SB9>{{cite journal|title=S<sub>B<sup>9</sup></sub>: The ninth catalogue of spectroscopic binary orbits|display-authors=1|author1=Pourbaix, D.|author2=Tokovinin, A. A.|author3=Batten, A. H.|author4=Fekel, F. C.|author5=Hartkopf, W. I.|author6=Levato, H.|author7=Morrell, N. I.|author8=Torres, G.|author9=Udry, S.|journal=Astronomy and Astrophysics|volume=424|issue=2|pages=727–732|year=2004|doi=10.1051/0004-6361:20041213|arxiv=astro-ph/0406573|bibcode=2004A&A...424..727P|s2cid=119387088}}</ref>
+|prop_mo_ra=-37.42<ref name=HIP/>
+|prop_mo_dec=-14.26<ref name=HIP/>
+|parallax=6.12
+|p_error=0.27
+|parallax_footnote=<ref name=HIP/>
+}}
+{{Starbox orbit
+|reference=<ref name=Escorza/>
+|period_unitless={{val|16911|438|401}} d
+|periastron={{val|2468401|432|385}}
+|eccentricity={{val|0.562|0.012|0.012}}
+|axis_unitless={{val|22.9|1.0|1.1}} au
+|periarg={{val|286|2.3|2.3}}
+|node={{val|60|3|3}}
+|inclination={{val|68|3.6|3.4}}
+}}
+{{Starbox detail
+|source=<ref name=Escorza/>
+|component1=56 UMa A
+|mass=4.3 ± 0.2
+|temperature=4917 ± 34
+|gravity=2.3 ± 0.6
+|metal_fe−0.05
+|component2=56 UMa B
+|mass2={{val|1.31|0.11|0.12}}
+}}
+{{Starbox catalog
+|names={{odlist|BD=+44° 2083|FK5=2908|HD=98839|HIP=55560|HR=4392|SAO=43719}}
+}}
+{{Starbox reference
+|Simbad=56+UMa
+}}
+{{Starbox end}}
+'''56 Ursae Majoris''' ('''56 UMa''') is a [[star]] in the [[constellation]] [[Ursa Major (constellation)|Ursa Major]]. Its [[apparent magnitude]] is 5.03.<ref name=Ducati/> It is a single-lined spectroscopic binary with an [[orbital period]] of about 45 years.<ref name=SB9/> The companion star is likely a heavy [[neutron star]] born by a [[supernova]] that exploded around 100,000 years ago.<ref name=Escorza>{{cite journal| arxiv=2301.06531 |title = A neutron star candidate in the long-period binary 56 UMa| bibcode=2023A&A...670L..14E | last1=Escorza | first1=A. | last2=Karinkuzhi | first2=D. | last3=Jorissen | first3=A. | last4=Van Eck | first4=S. | last5=Schmelz | first5=J. T. | last6=Verschuur | first6=G. L. | last7=Boffin | first7=H. M. J. | last8=De Rosa | first8=R. J. | last9=Van Winckel | first9=H. | journal=Astronomy and Astrophysics | year=2023 | volume=670 | pages=L14 | doi=10.1051/0004-6361/202245796 | s2cid=255941814 }}</ref>
 ==References==
@@ Line 13: / Line 55: @@
 {{Stars of Ursa Major}}
-[[Category:Ursa Major (constellation)]]
+[[Category:Ursa Major]]
 [[Category:G-type giants]]
+[[Category:Barium stars]]
+[[Category:Spectroscopic binaries]]
 [[Category:Flamsteed objects|Ursae Majoris, 56]]
+[[Category:Durchmusterung objects]]
+[[Category:Henry Draper Catalogue objects|098839]]
+[[Category:Hipparcos objects|055560]]
+[[Category:Bright Star Catalogue objects|4392]]
-{{Star-stub}}
+{{giant-star-stub}}

Observation data Epoch J2000 Equinox J2000
Constellation	Ursa Major
Right ascension	11^h 22^m 49.58373^s^[1]
Declination	+43° 28′ 57.7267″^[1]
Apparent magnitude (V)	5.03^[2]
Characteristics
Spectral type	G7IIIBa0.3^[3]
U−B color index	+0.82^[4]
B−V color index	+1.02^[4]
Astrometry

Radial velocity (R_v)	1.01 ± 0.05^[5] km/s
Proper motion (μ)	RA: -37.42^[1] mas/yr Dec.: -14.26^[1] mas/yr
Parallax (π)	6.12 ± 0.27 mas^[1]
Distance	530 ± 20 ly (163 ± 7 pc)

Orbit^[6]
Period (P)	16911+438 −401 d
Semi-major axis (a)	22.9+1.0 −1.1 au
Eccentricity (e)	0.562+0.012 −0.012
Inclination (i)	68+3.6 −3.4°
Longitude of the node (Ω)	60+3 −3°
Periastron epoch (T)	2468401+432 −385
Argument of periastron (ω) (secondary)	286+2.3 −2.3°
Details^[6]
56 UMa A
Mass	4.3 ± 0.2 `M`_☉
Surface gravity (log g)	2.3 ± 0.6 cgs
Temperature	4917 ± 34 K
56 UMa B
Mass	1.31+0.11 −0.12 `M`_☉
Other designations
BD+44° 2083, FK5 2908, HD 98839, HIP 55560, HR 4392, SAO 43719
Database references
SIMBAD	data