45 Draconis: Difference between revisions
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|name= 45 Draconis |
|name= 45 Draconis |
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|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> |
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|ra= {{RA|18|32|34.52235}} <ref name=SIMBAD/> |
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{{Starbox image |
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| image= |
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{{Location mark |
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|image=Draco constellation map.svg |
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|float=center |
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|alt= |
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|label= |
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|position=right |
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|width=280 |
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|mark=Red circle.svg |
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|mark_width=10 |
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|mark_link=45 Draconis |
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|x=139|y=798 |
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|caption=Location of 45 Dra (circled) |
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{{Starbox observe |
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| epoch = J2000 |
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| 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> |
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| 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> |
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{{Starbox character |
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| class = F7Ib<ref name=leonid/> |
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| b-v = +0.59<ref name=luck/> |
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| u-b = |
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| variable = |
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{{Starbox astrometry |
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| radial_v = −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> |
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| prop_mo_ra = 0.08<ref name=hipparcos/> |
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| prop_mo_dec = −7.45<ref name=hipparcos/> |
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| parallax = 1.54 |
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| p_error = 0.18 |
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| parallax_footnote = <ref name=hipparcos/> |
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| absmag_v = −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> |
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{{Starbox detail |
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| 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> |
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| 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> |
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| 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> |
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| temperature = 6,151<ref name=kovtyukh/> |
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| gravity = 2.1<ref name=leonid/> - 2.4<ref name=kovtyukh/> |
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| metal_fe = −0.04<ref name=kovtyukh/> |
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| rotational_velocity = 10<ref name=leonid/> |
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| 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> |
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}} |
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{{Starbox catalog |
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| names = [[Bayer designation|d]] Dra, [[Flamsteed designation|45]] Dra, [[Harvard Revised catalogue|HR]] 6978, [[Bonner Durchmusterung|BD]]+56°2113, [[Henry Draper catalogue|HD]] 171635, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]] 31039, [[FK5]] 3475, [[Hipparcos catalogue|HIP]] 90905 |
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}} |
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{{Starbox reference |
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| Simbad=45+Draconis |
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}} |
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{{Starbox end}} |
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==References== |
==References== |
Revision as of 21:55, 3 February 2016
Observation data Epoch J2000 Equinox J2000 | |
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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] |
Distance | approx. 2,100 ly (approx. 650 pc) |
Absolute magnitude (MV) | −3.5[5] |
Details | |
Mass | 8.2[3] M☉ |
Radius | 62[6] R☉ |
Luminosity | 5,450[7] L☉ |
Surface gravity (log g) | 2.1[3] - 2.4[5] cgs |
Temperature | 6,151[5] K |
Metallicity [Fe/H] | −0.04[5] dex |
Rotational velocity (v sin i) | 10[3] km/s |
Age | 33[8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
45 Draconis (d Dra) is a yellow supergiant star in the constellation Draco.
References
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.