R Sculptoris: Difference between revisions

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{{Starbox character
| class = C6,5ea(Np)<ref name=cruzalebes>{{cite journal|bibcode=2013MNRAS.434..437C|arxiv=1306.3288|title=Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER|journal=Monthly Notices of the Royal Astronomical Society|volume=434|pages=437|author1=Cruzalèbes|first1=P.|last2=Jorissen|first2=A.|last3=Rabbia|first3=Y.|last4=Sacuto|first4=S.|last5=Chiavassa|first5=A.|last6=Pasquato|first6=E.|last7=Plez|first7=B.|last8=Eriksson|first8=K.|last9=Spang|first9=A.|last10=Chesneau|first10=O.|year=2013|doi=10.1093/mnras/stt1037}}</ref>
| class = C6,5ea(Np)<ref name=cruzalebes>{{cite journal|bibcode=2013MNRAS.434..437C|arxiv=1306.3288}}</ref>
| b-v = +3.87<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|pages=0|author1=Ducati|first1=J. R.|year=2002}}</ref>
| b-v = +3.87<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|pages=0|author1=Ducati|first1=J. R.|year=2002}}</ref>
| u-b = +7.67<ref name=ducati/>
| u-b = +7.67<ref name=ducati/>
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{{Starbox astrometry
{{Starbox astrometry
| radial_v = &minus;5.40<ref>{{cite journal|bibcode=2006AstL...32..759G}}</ref>
| radial_v = &minus;5.40<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 = −7.63 ± 0.69<ref name="van Leeuwen2007"/>
| prop_mo_ra = −7.63 ± 0.69<ref name="van Leeuwen2007"/>
| prop_mo_dec = −31.48 ± 0.46<ref name="van Leeuwen2007"/>
| prop_mo_dec = −31.48 ± 0.46<ref name="van Leeuwen2007"/>

Revision as of 21:36, 10 July 2016

R Sculptoris
Location of R Sculptoris (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sculptor
Right ascension 01h 26m 58.09492s[1]
Declination −32° 32′ 35.4374″[1]
Apparent magnitude (V) +5.72[2] (5.5 - 9.5)
Characteristics
Spectral type C6,5ea(Np)[3]
U−B color index +7.67[2]
B−V color index +3.87[2]
Variable type SRb[4]
Astrometry
Radial velocity (Rv)−5.40[5] km/s
Proper motion (μ) RA: −7.63 ± 0.69[1] mas/yr
Dec.: −31.48 ± 0.46[1] mas/yr
Parallax (π)3.76 ± 0.75 mas[1]
Distanceapprox. 900 ly
(approx. 270 pc)
Details
Mass2 - 3[3] M☉
Radius513[3] R☉
Luminosity11,000[3] L☉
Surface gravity (log g)−0.59[3] cgs
Temperature2,600[3] K
Other designations
R Scl, HD 8879, HR 423, HIP 6759, AAVSO 0122-33
Database references
SIMBADdata

R Sculptoris is an asymptotic giant branch semi-regular variable red giant star located 1,500 light-years (460 parsecs) away in the constellation of Sculptor.[6][7] Observations have revealed a spiral structure in the material around it.[8] The spiral is suspected to be caused by an unseen companion star.[6]

Gallery

  • Curious spiral spotted by ALMA around red giant star R Sculptoris (data visualisation).
    Curious spiral spotted by ALMA around red giant star R Sculptoris (data visualisation).
  • R Sculptoris and its hidden companion, taken by Hubble Space Telescope
    R Sculptoris and its hidden companion, taken by Hubble Space Telescope

References

  1. ^ 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.Vizier catalog entry
  2. ^ a b c 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: 0. Bibcode:2002yCat.2237....0D.
  3. ^ a b c d e f Cruzalèbes, P.; Jorissen, A.; Rabbia, Y.; Sacuto, S.; Chiavassa, A.; Pasquato, E.; Plez, B.; Eriksson, K.; Spang, A.; Chesneau, O. (2013). "Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER". Monthly Notices of the Royal Astronomical Society. 434: 437. arXiv:1306.3288. Bibcode:2013MNRAS.434..437C. doi:10.1093/mnras/stt1037.
  4. ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  5. ^ 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.
  6. ^ a b "Hubble Gazes at R Sculptoris and its Hidden Companion". SpaceDaily. 11 January 2015.
  7. ^ "Curious spiral spotted by ALMA around red giant star R Sculptoris (data visualisation)". Image Archive. ESO. Retrieved 11 October 2012.
  8. ^ "Unexpectedly large mass loss during the thermal pulse cycle of the red giant R Sculptoris" (PDF). Research Paper. Retrieved 11 October 2012.


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