Jump to content

45 Draconis: Difference between revisions

From Wikipedia, the free encyclopedia
Content deleted Content added
Full starbox
Line 1: Line 1:
{{Starbox begin
{{starbox short
|constell= [[Draco (constellation)|Draco]]
|name= 45 Draconis
|name= 45 Draconis
|type= F7Ib <ref name=SIMBAD> SIMBAD, [http://simbak.cfa.harvard.edu/simbad/sim-basic?Ident=45+Draconis&submit=SIMBAD+search d Draconis] (accessed 28 August 2012) </ref>
|ra= {{RA|18|32|34.52235}} <ref name=SIMBAD/>
|dec= {{DEC|+57|02|44.1531}} <ref name=SIMBAD/>
}}
}}
{{Starbox image
'''45 Draconis''' ('''45 Dra''') is a [[star]] in the [[constellation]] [[Draco (constellation)|Draco]]. Its [[apparent magnitude]] is 4.94.
| image=
{{Location mark
|image=Draco constellation map.svg
|float=center
|alt=
|label=
|position=right
|width=280
|mark=Red circle.svg
|mark_width=10
|mark_link=45 Draconis
|x=139|y=798
}}
|caption=Location of 45 Dra (circled)
}}
{{Starbox observe
| epoch = J2000
| ra = {{RA|18|32|34.52235}}<ref name=hipparcos>{{cite journal|bibcode=2007A&A...474..653V|title=Validation of the new Hipparcos reduction|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653|author1=Van Leeuwen|first1=F.|year=2007|doi=10.1051/0004-6361:20078357}}</ref>
| dec = {{DEC|+57|02|44.1531}}<ref name=hipparcos/>
| appmag_v = 4.78<ref name=luck>{{cite journal|bibcode=2014AJ....147..137L|title=Parameters and Abundances in Luminous Stars|journal=The Astronomical Journal|volume=147|issue=6|pages=137|author1=Luck|first1=R. Earle|year=2014|doi=10.1088/0004-6256/147/6/137}}</ref>
|constell= [[Draco (constellation)|Draco]]
}}
{{Starbox character
| class = F7Ib<ref name=leonid/>
| b-v = +0.59<ref name=luck/>
| u-b =
| variable =
}}
{{Starbox astrometry
| radial_v = &minus;12.50<ref>{{cite journal|bibcode=2006AstL...32..759G|title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system|journal=Astronomy Letters|volume=32|issue=11|pages=759|author1=Gontcharov|first1=G. A.|year=2006|doi=10.1134/S1063773706110065}}</ref>
| prop_mo_ra = 0.08<ref name=hipparcos/>
| prop_mo_dec = &minus;7.45<ref name=hipparcos/>
| parallax = 1.54
| p_error = 0.18
| parallax_footnote = <ref name=hipparcos/>
| absmag_v = &minus;3.5<ref name=kovtyukh>{{cite journal|bibcode=2012MNRAS.423.3268K|arxiv=1204.4115|title=Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants|journal=Monthly Notices of the Royal Astronomical Society|volume=423|issue=4|pages=3268|author1=Kovtyukh|first1=V. V.|last2=Gorlova|first2=N. I.|last3=Belik|first3=S. I.|year=2012|doi=10.1111/j.1365-2966.2012.21117.x}}</ref>
}}
{{Starbox detail
| mass = 8.2<ref name=leonid>{{cite journal|bibcode=2012MNRAS.427...11L|title=Lithium abundance in atmospheres of F- and G-type supergiants and bright giants|journal=Monthly Notices of the Royal Astronomical Society|volume=427|pages=11|author1=Lyubimkov|first1=Leonid S.|last2=Lambert|first2=David L.|last3=Kaminsky|first3=Bogdan M.|last4=Pavlenko|first4=Yakov V.|last5=Poklad|first5=Dmitry B.|last6=Rachkovskaya|first6=Tamara M.|year=2012|doi=10.1111/j.1365-2966.2012.21617.x}}</ref>
| radius = 62<ref>{{cite journal|bibcode= 2001A&A...367..521P|title= Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics|journal= Astronomy and Astrophysics|volume= 367|issue= 2|pages= 521|author1= Pasinetti Fracassini|first1= L. E.|last2= Pastori|first2= L.|last3= Covino|first3= S.|last4= Pozzi|first4= A.|year= 2001|doi= 10.1051/0004-6361:20000451}}</ref>
| luminosity = 5,450<ref>{{cite journal|bibcode= 2012MNRAS.427..343M|title= Fundamental parameters and infrared excesses of Hipparcos stars|journal= Monthly Notices of the Royal Astronomical Society|volume= 427|pages= 343|author1= McDonald|first1= I.|last2= Zijlstra|first2= A. A.|last3= Boyer|first3= M. L.|year= 2012|doi= 10.1111/j.1365-2966.2012.21873.x}}</ref>
| temperature = 6,151<ref name=kovtyukh/>
| gravity = 2.1<ref name=leonid/> - 2.4<ref name=kovtyukh/>
| metal_fe = &minus;0.04<ref name=kovtyukh/>
| rotational_velocity = 10<ref name=leonid/>
| age_myr = 33<ref name=leonid09>{{cite journal|bibcode=2010MNRAS.402.1369L|arxiv=0911.1335|title=Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood|journal=Monthly Notices of the Royal Astronomical Society|volume=402|issue=2|pages=1369|author1=Lyubimkov|first1=Leonid S.|last2=Lambert|first2=David L.|last3=Rostopchin|first3=Sergey I.|last4=Rachkovskaya|first4=Tamara M.|last5=Poklad|first5=Dmitry B.|year=2010|doi=10.1111/j.1365-2966.2009.15979.x}}</ref>
}}
{{Starbox catalog
| names = [[Bayer designation|d]]&nbsp;Dra, [[Flamsteed designation|45]]&nbsp;Dra, [[Harvard Revised catalogue|HR]]&nbsp;6978, [[Bonner Durchmusterung|BD]]+56°2113, [[Henry Draper catalogue|HD]]&nbsp;171635, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]]&nbsp;31039, [[FK5]]&nbsp;3475, [[Hipparcos catalogue|HIP]]&nbsp;90905
}}
{{Starbox reference
| Simbad=45+Draconis
}}
{{Starbox end}}

'''45 Draconis''' ('''d Dra''') is a [[yellow supergiant]] star in the constellation Draco.


==References==
==References==

Revision as of 21:55, 3 February 2016

45 Draconis
Location of 45 Dra (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Draco
Right ascension 18h 32m 34.52235s[1]
Declination +57° 02′ 44.1531″[1]
Apparent magnitude (V) 4.78[2]
Characteristics
Spectral type F7Ib[3]
B−V color index +0.59[2]
Astrometry
Radial velocity (Rv)−12.50[4] km/s
Proper motion (μ) RA: 0.08[1] mas/yr
Dec.: −7.45[1] mas/yr
Parallax (π)1.54 ± 0.18 mas[1]
Distanceapprox. 2,100 ly
(approx. 650 pc)
Absolute magnitude (MV)−3.5[5]
Details
Mass8.2[3] M
Radius62[6] R
Luminosity5,450[7] L
Surface gravity (log g)2.1[3] - 2.4[5] cgs
Temperature6,151[5] K
Metallicity [Fe/H]−0.04[5] dex
Rotational velocity (v sin i)10[3] km/s
Age33[8] Myr
Other designations
d Dra, 45 Dra, HR 6978, BD+56°2113, HD 171635, SAO 31039, FK5 3475, HIP 90905
Database references
SIMBADdata

45 Draconis (d Dra) is a yellow supergiant star in the constellation Draco.

References

  1. ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  2. ^ a b Luck, R. Earle (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137.
  3. ^ a b c d Lyubimkov, Leonid S.; Lambert, David L.; Kaminsky, Bogdan M.; Pavlenko, Yakov V.; Poklad, Dmitry B.; Rachkovskaya, Tamara M. (2012). "Lithium abundance in atmospheres of F- and G-type supergiants and bright giants". Monthly Notices of the Royal Astronomical Society. 427: 11. Bibcode:2012MNRAS.427...11L. doi:10.1111/j.1365-2966.2012.21617.x.
  4. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
  5. ^ a b c d Kovtyukh, V. V.; Gorlova, N. I.; Belik, S. I. (2012). "Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants". Monthly Notices of the Royal Astronomical Society. 423 (4): 3268. arXiv:1204.4115. Bibcode:2012MNRAS.423.3268K. doi:10.1111/j.1365-2966.2012.21117.x.
  6. ^ Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy and Astrophysics. 367 (2): 521. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451.
  7. ^ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427: 343. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
  8. ^ Lyubimkov, Leonid S.; Lambert, David L.; Rostopchin, Sergey I.; Rachkovskaya, Tamara M.; Poklad, Dmitry B. (2010). "Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood". Monthly Notices of the Royal Astronomical Society. 402 (2): 1369. arXiv:0911.1335. Bibcode:2010MNRAS.402.1369L. doi:10.1111/j.1365-2966.2009.15979.x.