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m Robot - Moving category Objects named with variable star designations to Category:Objects with variable star designations per CFD at Wikipedia:Categories for discussion/Log/2017 August 11.
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{{Starbox begin}}
{{starbox short
{{Starbox observe
⚫
|constell= [[Canis Minor]]
|name= BC Canis Minoris
| constell = [[Canis Minor]]
| epoch = [[J2000]]
⚫
|type= M4III<ref name=SIMBAD>{{cite simbad | title=V* BC CMi | accessdate=12 January 2013}}</ref>
|ra= {{RA|07|52|07.19014}}<ref name=SIMBAD/>
| ra = {{RA|07|52|07.19000}}<ref name=GaiaDR2/>
|dec= {{DEC|03|16|38.4324}}<ref name=SIMBAD/>
| dec = {{DEC|03|16|38.4465}}<ref name=GaiaDR2/>
| appmag_v = 6.30<ref name=Anderson2012/> {{nowrap|(6.14 to 6.42)}}<ref name=Samus2017/>
⚫
|names={{odlist|BD=+03 1824|HD=64052|HIP=38406|HR=3061|SAO=116054}}<ref name=SIMBAD/>
}}
}}
{{Starbox character
'''BC Canis Minoris''' is a [[red giant]] [[star]] in the [[constellation]] [[Canis Minor]]. It is a semi-regular variable with measured periods of 27.7, 143.3 and 208.3 days, and an average visual magnitude of 6.30. It is around {{convert|500|ly|pc|abbr=off|lk=off}} distant.<ref>{{cite journal | title=Long-term photometry and periods for 261 nearby pulsating M giants | last=Tabur |first =V. |last2=Bedding |first2=T. R. |author2-link= Tim Bedding|year=2009 |journal=[[Monthly Notices of the Royal Astronomical Society]] |volume= 400 | issue =4 |pages= 1945–61 |doi=10.1111/j.1365-2966.2009.15588.x |arxiv = 0908.3228 |bibcode = 2009MNRAS.400.1945T }}</ref>
| type = [[asymptotic giant branch|AGB]]<ref name=Eggen1992/>
| class = M4/5III<ref name=Houk1999/>
| b-v = {{Val|1.464|0.015}}<ref name=Anderson2012/>
| variable = [[Semiregular variable star|SRb]]<ref name=Samus2017/>
}}
{{Starbox astrometry
| radial_v = {{Val|−66.91|0.24}}<ref name=Anderson2012/>
| prop_mo_ra = +49.415<ref name=GaiaDR2/>
| prop_mo_dec = −78.835<ref name=GaiaDR2/>
| parallax = 6.2916
| p_error = 0.1748
| parallax_footnote = <ref name=GaiaDR2/>
| absmag_v = 0.36<ref name=Anderson2012/>
}}
{{Starbox detail
| source =
| mass =
| radius = {{Val|60.4|7.6|10.3}}<ref name=GaiaDR2/>
| luminosity = {{Val|496.7|15.9}}<ref name=GaiaDR2/>
| temperature = {{Val|3507|344|201|fmt=commas}}<ref name=GaiaDR2/>
| metal_fe =
| rotational_velocity =
| gravity =
| age_gyr =
}}
{{Starbox catalog
⚫
| names = {{odlist | BD=+03°1824 | V=BC CMi | HD=64052 | HIP=38406 | HR=3061 | SAO=116054 }}<ref name=SIMBAD/>
}}
{{Starbox reference
| Simbad = BC+CMi
}}
{{Starbox end}}

'''BC Canis Minoris''' is a [[variable star]] in the [[celestial equator|equatorial]] [[constellation]] of [[Canis Minor]]. It has a reddish hue and is just barely visible to the naked eye with an [[apparent visual magnitude]] that fluctuates around 6.30.<ref name=Anderson2012/> The distance to this object is approximately 520&nbsp;[[light year]]s based on [[stellar parallax|parallax]],<ref name=GaiaDR2/> but it is drifting closer with a [[radial velocity]] of −67&nbsp;km/s.<ref name=Anderson2012/>

This is an aging [[red giant]] star currently on the [[asymptotic giant branch]]<ref name=Eggen1992/> with a [[stellar classification]] of M4/5III.<ref name=Houk1999/> It is a [[Semiregular variable star|semi-regular variable]] of subtype SRb<ref name=Samus2017/> with measured pulsation periods of 27.7, 143.3 and 208.3 days, and an average visual magnitude of 6.30.<ref name=Tabur2009/> With the supply of hydrogen at its [[stellar core|core]] exhausted, it has cooled and expanded off the [[main sequence]] and now has around 60<ref name=GaiaDR2/> times the [[solar radius|girth of the Sun]]. On average, the star is radiating about 497<ref name=GaiaDR2/> times the [[luminosity of the Sun]] from its swollen [[photosphere]] at an [[effective temperature]] of 3,507&nbsp;K.<ref name=GaiaDR2/>


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


⚫
<ref name=SIMBAD>{{cite simbad | title=BC CMi | access-date=2019-12-13 }}</ref>
⚫
{{Stars of Canis Minor}}


<ref name=GaiaDR2>{{Cite Gaia DR2|3089032254145625472}}</ref>
[[Category:Canis Minor]]

<ref name=Anderson2012>{{cite journal
| title=XHIP: An extended hipparcos compilation
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| journal=Astronomy Letters
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | arxiv=1108.4971
| doi=10.1134/S1063773712050015 }}</ref>

<ref name=Tabur2009>{{cite journal
| title=Long-term photometry and periods for 261 nearby pulsating M giants
| last=Tabur | first=V. | last2=Bedding | first2=T. R. | author2-link=Tim Bedding
| journal=[[Monthly Notices of the Royal Astronomical Society]]
| volume=400 | issue=4 | pages=1945–61 | year=2009
| doi=10.1111/j.1365-2966.2009.15588.x | arxiv=0908.3228
| bibcode=2009MNRAS.400.1945T }}</ref>

<ref name=Houk1999>{{cite journal
| last1=Houk | first1=N. | last2=Swift | first2=C.
| title=Michigan catalogue of two-dimensional spectral types for the HD Stars
| journal=Michigan Spectral Survey | volume=5 | year=1999
| bibcode=1999MSS...C05....0H }}</ref>

<ref name=Eggen1992>{{cite journal
| last1=Eggen | first1=Olin J.
| title=Asymptotic giant branch stars near the sun
| journal=Astronomical Journal | postscript=.
| volume=104 | issue=1 | date=July 1992 | pages=275–313
| doi=10.1086/116239 | bibcode=1992AJ....104..275E }}</ref>

<ref name=Samus2017>{{cite journal
| display-authors=1 | last1=Samus | first1=N. N.
| last2=Kazarovets | first2=E. V. | last3=Durlevich | first3=O. V.
| last4=Kireeva | first4=N. N. | last5=Pastukhova | first5=E. N.
| title=General Catalogue of Variable Stars
| version=5.1 | journal=Astronomy Reports
| year=2017 | volume=61 | issue=1 | pages=80–88
| bibcode=2017ARep...61...80S | doi=10.1134/S1063772917010085 }}</ref>

}}

⚫
{{Stars of Canis Minor}}
<!-- Properties -->
[[Category:M-type giants]]
[[Category:M-type giants]]
[[Category:Semiregular variable stars]]
[[Category:Semiregular variable stars]]
<!-- Identifiers -->
[[Category:Objects with variable star designations|Canis Majoris, BC]]
⚫
[[Category:Canis Minor]]
[[Category:Durchmusterung objects]]
[[Category:Durchmusterung objects]]
[[Category:Henry Draper Catalogue objects|064052]]
[[Category:Henry Draper Catalogue objects|059950]]
[[Category:Hipparcos objects|038406]]
[[Category:Hipparcos objects|036675]]
[[Category:HR objects|3061]]
[[Category:Objects with variable star designations|Canis Minoris, S]]

{{Var-star-stub}}

Revision as of 18:37, 13 December 2019

BC Canis Minoris
Observation data
Epoch J2000      Equinox J2000
Constellation Canis Minor
Right ascension 07h 52m 07.19000s[1]
Declination 03° 16′ 38.4465″[1]
Apparent magnitude (V) 6.30[2] (6.14 to 6.42)[3]
Characteristics
Evolutionary stage AGB[4]
Spectral type M4/5III[5]
B−V color index 1.464±0.015[2]
Variable type SRb[3]
Astrometry
Radial velocity (Rv)−66.91±0.24[2] km/s
Proper motion (μ) RA: +49.415[1] mas/yr
Dec.: −78.835[1] mas/yr
Parallax (π)6.2916 ± 0.1748 mas[1]
Distance520 ± 10 ly
(159 ± 4 pc)
Absolute magnitude (MV)0.36[2]
Details
Radius60.4+7.6
−10.3[1] R☉
Luminosity496.7±15.9[1] L☉
Temperature3,507+344
−201[1] K
Other designations
BC CMi, BD+03°1824, HD 64052, HIP 38406, HR 3061, SAO 116054[6]
Database references
SIMBADdata

BC Canis Minoris is a variable star in the equatorial constellation of Canis Minor. It has a reddish hue and is just barely visible to the naked eye with an apparent visual magnitude that fluctuates around 6.30.[2] The distance to this object is approximately 520 light years based on parallax,[1] but it is drifting closer with a radial velocity of −67 km/s.[2]

This is an aging red giant star currently on the asymptotic giant branch[4] with a stellar classification of M4/5III.[5] It is a semi-regular variable of subtype SRb[3] with measured pulsation periods of 27.7, 143.3 and 208.3 days, and an average visual magnitude of 6.30.[7] With the supply of hydrogen at its core exhausted, it has cooled and expanded off the main sequence and now has around 60[1] times the girth of the Sun. On average, the star is radiating about 497[1] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 3,507 K.[1]

References

  1. ^ a b c d e f g h i j k l Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b c d e f 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.
  3. ^ a b c Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085.
  4. ^ a b Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun". Astronomical Journal. 104 (1): 275–313. Bibcode:1992AJ....104..275E. doi:10.1086/116239.{{cite journal}}: CS1 maint: postscript (link)
  5. ^ a b Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
  6. ^ "BC CMi". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-12-13.
  7. ^ Tabur, V.; Bedding, T. R. (2009). "Long-term photometry and periods for 261 nearby pulsating M giants". Monthly Notices of the Royal Astronomical Society. 400 (4): 1945–61. arXiv:0908.3228. Bibcode:2009MNRAS.400.1945T. doi:10.1111/j.1365-2966.2009.15588.x.
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