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Rho1 Sagittarii

March 11, 2023

For other star systems with this Bayer designation, see ρ Sagittarii.

Rho1 Sagittarii, Latinized from ρ1 Sagittarii, is a single,[13] variable star in the southern constellation of Sagittarius. It has a white hue and is visible to the naked eye with an apparent visual magnitude that fluctuates around 3.93.[2] The distance to this star is approximately 127 light years based on parallax,[1] and it is drifting further away with a radial velocity of +1.2 km/s.[5] It is positioned near the ecliptic and so it can be occulted by the Moon.[14]

ρ1 Sagittarii
Location of ρ1 Sagittarii (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 19h 21m 40.35942s[1]
Declination −17° 50′ 49.9168″[1]
Apparent magnitude (V) 3.93[2]
Characteristics
Spectral type A9IV[3]
U−B color index +0.14[2]
B−V color index +0.22[2]
Variable type δ Sct[4]
Astrometry
Radial velocity (Rv)+1.20[5] km/s
Proper motion (μ) RA: −25.87[1] mas/yr
Dec.: +21.46[1] mas/yr
Parallax (π)25.69 ± 0.19 mas[1]
Distance127.0 ± 0.9 ly
(38.9 ± 0.3 pc)
Absolute magnitude (MV)0.97[6]
Details
Mass1.91[7] M☉
Radius3.31+0.24
−0.26[8] R☉
Luminosity30.7±0.8[8] L☉
Surface gravity (log g)3.89[9] cgs
Temperature7,469+201
−261[8] K
Metallicity [Fe/H]−0.02[10] dex
Rotational velocity (v sin i)68[11] km/s
Age893[9] Myr
Other designations
ρ Pav, 44 Sagittarii, BD−18° 5322, GC 26694, GJ 4107, HD 181577, HIP 95168, HR 7340, SAO 162512, PPM 235882, GSC 06301-02457[12]
Database references
SIMBADdata

This object has a stellar classification of A9IV,[3] matching a subgiant star that is evolving away from the main sequence. It is a low amplitude Delta Scuti variable, ranging from 3.94 to 3.90 magnitude with a period of 0.05 days.[4] The star is 893[9] million years old and is spinning with a projected rotational velocity of 68 km/s.[11] It has 1.9[7] times the mass of the Sun and 3.3[8] times the Sun's radius. The star is radiating 31 times the luminosity of the Sun from its photosphere at an effective temperature of 7,469 K.[8]

References

  1. ^ a b c d e f 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. Vizier catalog entry
  2. ^ a b c d 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. ^ a b Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal. 132: 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637. S2CID 119476992.
  4. ^ a b 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....1.2025S.
  5. ^ a b Wilson, R. E. (1953). General Catalogue of Stellar Radial Velocities. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN 54001336.
  6. ^ 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. S2CID 119257644. Vizier catalog entry
  7. ^ a b Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A. Vizier catalog entry
  8. ^ a b c d e 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.
  9. ^ a b c David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146. S2CID 33401607. Vizier catalog entry
  10. ^ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771–782. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031. S2CID 118345778. Vizier catalog entry
  11. ^ a b Hoffleit, D.; Warren, W. H. (1995). "Bright Star Catalogue". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H (5th Revised ed.). 5050. Bibcode:1995yCat.5050....0H.
  12. ^ "rho01 Sgr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-10-16.
  13. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
  14. ^ Edwards, D. A.; Evans, D. S.; Fekel, F. C.; Smith, B. W. (April 1980). "Photoelectric observations of lunar occultations. XI". Astronomical Journal. 85: 478–489. Bibcode:1980AJ.....85..478E. doi:10.1086/112700.

March 11, 2023
rho1, sagittarii, other, star, systems, with, this, bayer, designation, sagittarii, latinized, from, sagittarii, single, variable, star, southern, constellation, sagittarius, white, visible, naked, with, apparent, visual, magnitude, that, fluctuates, around, d. For other star systems with this Bayer designation see r Sagittarii Rho1 Sagittarii Latinized from r1 Sagittarii is a single 13 variable star in the southern constellation of Sagittarius It has a white hue and is visible to the naked eye with an apparent visual magnitude that fluctuates around 3 93 2 The distance to this star is approximately 127 light years based on parallax 1 and it is drifting further away with a radial velocity of 1 2 km s 5 It is positioned near the ecliptic and so it can be occulted by the Moon 14 r1 SagittariiLocation of r1 Sagittarii circled Observation dataEpoch J2000 Equinox J2000Constellation SagittariusRight ascension 19h 21m 40 35942s 1 Declination 17 50 49 9168 1 Apparent magnitude V 3 93 2 CharacteristicsSpectral type A9IV 3 U B color index 0 14 2 B V color index 0 22 2 Variable type d Sct 4 AstrometryRadial velocity Rv 1 20 5 km sProper motion m RA 25 87 1 mas yr Dec 21 46 1 mas yrParallax p 25 69 0 19 mas 1 Distance127 0 0 9 ly 38 9 0 3 pc Absolute magnitude MV 0 97 6 DetailsMass1 91 7 M Radius3 31 0 24 0 26 8 R Luminosity30 7 0 8 8 L Surface gravity log g 3 89 9 cgsTemperature7 469 201 261 8 KMetallicity Fe H 0 02 10 dexRotational velocity v sin i 68 11 km sAge893 9 MyrOther designationsr Pav 44 Sagittarii BD 18 5322 GC 26694 GJ 4107 HD 181577 HIP 95168 HR 7340 SAO 162512 PPM 235882 GSC 06301 02457 12 Database referencesSIMBADdataThis object has a stellar classification of A9IV 3 matching a subgiant star that is evolving away from the main sequence It is a low amplitude Delta Scuti variable ranging from 3 94 to 3 90 magnitude with a period of 0 05 days 4 The star is 893 9 million years old and is spinning with a projected rotational velocity of 68 km s 11 It has 1 9 7 times the mass of the Sun and 3 3 8 times the Sun s radius The star is radiating 31 times the luminosity of the Sun from its photosphere at an effective temperature of 7 469 K 8 References Edit a b c d e f Van Leeuwen F 2007 Validation of the new Hipparcos reduction Astronomy and Astrophysics 474 2 653 664 arXiv 0708 1752 Bibcode 2007A amp A 474 653V doi 10 1051 0004 6361 20078357 S2CID 18759600 Vizier catalog entry a b c d 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 a b Gray R O Corbally C J Garrison R F McFadden M T Bubar E J McGahee C E O Donoghue A A Knox E R 2006 Contributions to the Nearby Stars NStars Project Spectroscopy of Stars Earlier than M0 within 40 pc The Southern Sample The Astronomical Journal 132 161 170 arXiv astro ph 0603770 Bibcode 2006AJ 132 161G doi 10 1086 504637 S2CID 119476992 a b 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 1 2025S a b Wilson R E 1953 General Catalogue of Stellar Radial Velocities Carnegie Institution for Science Bibcode 1953GCRV C 0W LCCN 54001336 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 S2CID 119257644 Vizier catalog entry a b Allende Prieto C Lambert D L 1999 Fundamental parameters of nearby stars from the comparison with evolutionary calculations Masses radii and effective temperatures Astronomy and Astrophysics 352 555 562 arXiv astro ph 9911002 Bibcode 1999A amp A 352 555A Vizier catalog entry a b c d e Brown A G A et al Gaia collaboration August 2018 Gaia Data Release 2 Summary of the contents and survey properties Astronomy amp Astrophysics 616 A1 arXiv 1804 09365 Bibcode 2018A amp A 616A 1G doi 10 1051 0004 6361 201833051 Gaia DR2 record for this source at VizieR a b c David Trevor J Hillenbrand Lynne A 2015 The Ages of Early Type Stars Stromgren Photometric Methods Calibrated Validated Tested and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets The Astrophysical Journal 804 2 146 arXiv 1501 03154 Bibcode 2015ApJ 804 146D doi 10 1088 0004 637X 804 2 146 S2CID 33401607 Vizier catalog entry Gontcharov G A 2012 Dependence of kinematics on the age of stars in the solar neighborhood Astronomy Letters 38 12 771 782 arXiv 1606 08814 Bibcode 2012AstL 38 771G doi 10 1134 S1063773712120031 S2CID 118345778 Vizier catalog entry a b Hoffleit D Warren W H 1995 Bright Star Catalogue VizieR On line Data Catalog V 50 Originally Published in 1964BS C 0H 5th Revised ed 5050 Bibcode 1995yCat 5050 0H rho01 Sgr SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2019 10 16 Eggleton P P Tokovinin A A September 2008 A catalogue of multiplicity among bright stellar systems Monthly Notices of the Royal Astronomical Society 389 2 869 879 arXiv 0806 2878 Bibcode 2008MNRAS 389 869E doi 10 1111 j 1365 2966 2008 13596 x S2CID 14878976 Edwards D A Evans D S Fekel F C Smith B W April 1980 Photoelectric observations of lunar occultations XI Astronomical Journal 85 478 489 Bibcode 1980AJ 85 478E doi 10 1086 112700 Retrieved from https en wikipedia org w index php title Rho1 Sagittarii amp oldid 1125090311, wikipedia, wiki, book, books, library,

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