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Rho Persei

January 01, 1970

Rho Persei, Latinized from ρ Persei, is a star in the northern constellation of Perseus. It has the traditional name Gorgonea Tertia /ɡɔːrɡəˈniːə ˈtɜːrʃə/,[11] being the third member of the quartet called the Gorgonea in reference to the Gorgons from the legend of Perseus.[9] An apparent visual magnitude of +3.39[2] makes it visible to the naked eye, but a challenge to view from a well-lit urban environment. Based upon parallax measurements, it is located at a distance of roughly 308 light-years (94 pc) from Earth.[1]

ρ Persei
Location of ρ Persei (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 03h 05m 10.59385s[1]
Declination +38° 50′ 24.9943″[1]
Apparent magnitude (V) +3.39[2]
Characteristics
Evolutionary stage AGB[3]
Spectral type M4 II[4]
U−B color index +1.79[2]
B−V color index +1.65[2]
Variable type SRb[4]
Astrometry
Radial velocity (Rv)+29.10±0.30[5] km/s
Proper motion (μ) RA: +129.22[1] mas/yr
Dec.: –105.70[1] mas/yr
Parallax (π)10.60 ± 0.25 mas[1]
Distance308 ± 7 ly
(94 ± 2 pc)
Absolute magnitude (MV)−1.7[6]
Details[7]
Mass1.9±0.7 M☉
Radius143±12 R☉
Luminosity2,692+192
−180 L☉
Surface gravity (log g)0.37±0.15 cgs
Temperature3,479±125 K
Metallicity [Fe/H]−0.15 dex
Rotational velocity (v sin i)11.2[8] km/s
Age440[9] Myr
Other designations
Gorgonea Tertia, Rho Per, ρ Per, 25 Persei, BD+38°630, FK5 109, GC 3682, HD 19058, HIP 14354, HR 921, SAO 56138, PPM 68074[10]
Database references
SIMBADdata
A visual band light curve for Rho Persei, plotted from AAVSO data[12]

Rho Persei is a semiregular variable star, whose apparent magnitude varies between 3.3 and 4.0[13] with periods of 50, 120 and 250 days.[6] The star has reached the asymptotic giant branch of its evolution.[3] It is a bright giant star with a stellar classification of M4 II.[4] The outer envelope has an effective temperature of 3,479 K,[7] giving it the red-orange hue of an M-type star.[14]

This star has a mass 1.9 times the mass of the Sun, while its radius has expanded to 143 times solar. It is radiating some 2,700 times the Sun's luminosity.[7] Rho Persei is losing mass at the rate of 1.2×10−8 solar masses per year, or the equivalent of the Sun's mass every 83 million years.[15] It is about 440 million years in age.[9]

Naming edit

In Chinese, 大陵 (Dà Líng), meaning Mausoleum, refers to an asterism consisting of ρ Persei, 9 Persei, τ Persei, ι Persei, κ Persei, β Persei, 16 Persei and 12 Persei. Consequently, the Chinese name for ρ Persei itself is 大陵六 (Dà Líng liù, English: the Sixth Star of Mausoleum.).[16]

References edit

  1. ^ a b c d e f van Leeuwen, F. (November 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
  2. ^ a b c d Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N
  3. ^ 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
  4. ^ a b c Ragland, S.; et al. (November 2006), "First Surface-resolved Results with the Infrared Optical Telescope Array Imaging Interferometer: Detection of Asymmetries in Asymptotic Giant Branch Stars", The Astrophysical Journal, 652 (1): 650–660, arXiv:astro-ph/0607156, Bibcode:2006ApJ...652..650R, doi:10.1086/507453, S2CID 30825403
  5. ^ Famaey, B.; et al. (May 2009), "Spectroscopic binaries among Hipparcos M giants. I. Data, orbits, and intrinsic variations", Astronomy and Astrophysics, 498 (2): 627–640, arXiv:0901.0934, Bibcode:2009A&A...498..627F, doi:10.1051/0004-6361/200810698, S2CID 18739721
  6. ^ a b Yeşilyaprak, C.; Aslan, Z. (December 2004), "Period-luminosity relation for M-type semiregular variables from Hipparcos parallaxes", Monthly Notices of the Royal Astronomical Society, 355 (2): 601–607, Bibcode:2004MNRAS.355..601Y, doi:10.1111/j.1365-2966.2004.08344.x
  7. ^ a b c Kallinger, T.; et al. (April 2019), "Stellar masses from granulation and oscillations of 23 bright red giants observed by BRITE-Constellation", Astronomy & Astrophysics, 624: 17, arXiv:1902.07531, Bibcode:2019A&A...624A..35K, doi:10.1051/0004-6361/201834514, S2CID 102486794, A35.
  8. ^ Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209
  9. ^ a b c Kaler, James B., "GORGONEA TERTIA (Rho Persei)", Stars, University of Illinois, retrieved 2012-01-25
  10. ^ "rho Per -- Semi-regular pulsating Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2012-01-24
  11. ^ Allen, Richard Hinckley (1899), "Star-names and their meanings", New York, G. E. Stechert: 334, Bibcode:1899sntm.book.....A
  12. ^ Enhanced LCG, AAVSO, retrieved 21 September 2022.
  13. ^ Kukarkin, B. V.; et al. (1971), General Catalogue of Variable Stars (3rd ed.), Bibcode:1971GCVS3.C......0K
  14. ^ , Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on 2013-12-03, retrieved 2012-01-16
  15. ^ Cox, Arthur N.; Becker, Stephen A.; Pesnell, W. Dean (2000), (PDF), Allen's astrophysical quantities (4th ed.), New York: Springer, p. 516, ISBN 0-387-98746-0, archived from the original (PDF) on 2016-03-04, retrieved 2012-01-25 See table 20.5
  16. ^ (in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 11 日

External links edit

    January 01, 1970
    persei, latinized, from, persei, star, northern, constellation, perseus, traditional, name, gorgonea, tertia, ɔːr, ɜːr, being, third, member, quartet, called, gorgonea, reference, gorgons, from, legend, perseus, apparent, visual, magnitude, makes, visible, nak. Rho Persei Latinized from r Persei is a star in the northern constellation of Perseus It has the traditional name Gorgonea Tertia ɡ ɔːr ɡ e ˈ n iː e ˈ t ɜːr ʃ e 11 being the third member of the quartet called the Gorgonea in reference to the Gorgons from the legend of Perseus 9 An apparent visual magnitude of 3 39 2 makes it visible to the naked eye but a challenge to view from a well lit urban environment Based upon parallax measurements it is located at a distance of roughly 308 light years 94 pc from Earth 1 r PerseiLocation of r Persei circled Observation dataEpoch J2000 Equinox J2000 Constellation Perseus Right ascension 03h 05m 10 59385s 1 Declination 38 50 24 9943 1 Apparent magnitude V 3 39 2 Characteristics Evolutionary stage AGB 3 Spectral type M4 II 4 U B color index 1 79 2 B V color index 1 65 2 Variable type SRb 4 AstrometryRadial velocity Rv 29 10 0 30 5 km sProper motion m RA 129 22 1 mas yr Dec 105 70 1 mas yrParallax p 10 60 0 25 mas 1 Distance308 7 ly 94 2 pc Absolute magnitude MV 1 7 6 Details 7 Mass1 9 0 7 M Radius143 12 R Luminosity2 692 192 180 L Surface gravity log g 0 37 0 15 cgsTemperature3 479 125 KMetallicity Fe H 0 15 dexRotational velocity v sin i 11 2 8 km sAge440 9 Myr Other designationsGorgonea Tertia Rho Per r Per 25 Persei BD 38 630 FK5 109 GC 3682 HD 19058 HIP 14354 HR 921 SAO 56138 PPM 68074 10 Database referencesSIMBADdata A visual band light curve for Rho Persei plotted from AAVSO data 12 Rho Persei is a semiregular variable star whose apparent magnitude varies between 3 3 and 4 0 13 with periods of 50 120 and 250 days 6 The star has reached the asymptotic giant branch of its evolution 3 It is a bright giant star with a stellar classification of M4 II 4 The outer envelope has an effective temperature of 3 479 K 7 giving it the red orange hue of an M type star 14 This star has a mass 1 9 times the mass of the Sun while its radius has expanded to 143 times solar It is radiating some 2 700 times the Sun s luminosity 7 Rho Persei is losing mass at the rate of 1 2 10 8 solar masses per year or the equivalent of the Sun s mass every 83 million years 15 It is about 440 million years in age 9 Naming editIn Chinese 大陵 Da Ling meaning Mausoleum refers to an asterism consisting of r Persei 9 Persei t Persei i Persei k Persei b Persei 16 Persei and 12 Persei Consequently the Chinese name for r Persei itself is 大陵六 Da Ling liu English the Sixth Star of Mausoleum 16 References edit a b c d e f van Leeuwen F November 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 a b c d Nicolet B 1978 Photoelectric photometric Catalogue of homogeneous measurements in the UBV System Astronomy and Astrophysics Supplement Series 34 1 49 Bibcode 1978A amp AS 34 1N 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 a b c Ragland S et al November 2006 First Surface resolved Results with the Infrared Optical Telescope Array Imaging Interferometer Detection of Asymmetries in Asymptotic Giant Branch Stars The Astrophysical Journal 652 1 650 660 arXiv astro ph 0607156 Bibcode 2006ApJ 652 650R doi 10 1086 507453 S2CID 30825403 Famaey B et al May 2009 Spectroscopic binaries among Hipparcos M giants I Data orbits and intrinsic variations Astronomy and Astrophysics 498 2 627 640 arXiv 0901 0934 Bibcode 2009A amp A 498 627F doi 10 1051 0004 6361 200810698 S2CID 18739721 a b Yesilyaprak C Aslan Z December 2004 Period luminosity relation for M type semiregular variables from Hipparcos parallaxes Monthly Notices of the Royal Astronomical Society 355 2 601 607 Bibcode 2004MNRAS 355 601Y doi 10 1111 j 1365 2966 2004 08344 x a b c Kallinger T et al April 2019 Stellar masses from granulation and oscillations of 23 bright red giants observed by BRITE Constellation Astronomy amp Astrophysics 624 17 arXiv 1902 07531 Bibcode 2019A amp A 624A 35K doi 10 1051 0004 6361 201834514 S2CID 102486794 A35 Massarotti Alessandro et al January 2008 Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity The Astronomical Journal 135 1 209 231 Bibcode 2008AJ 135 209M doi 10 1088 0004 6256 135 1 209 a b c Kaler James B GORGONEA TERTIA Rho Persei Stars University of Illinois retrieved 2012 01 25 rho Per Semi regular pulsating Star SIMBAD Centre de Donnees astronomiques de Strasbourg retrieved 2012 01 24 Allen Richard Hinckley 1899 Star names and their meanings New York G E Stechert 334 Bibcode 1899sntm book A Enhanced LCG AAVSO retrieved 21 September 2022 Kukarkin B V et al 1971 General Catalogue of Variable Stars 3rd ed Bibcode 1971GCVS3 C 0K The Colour of Stars Australia Telescope Outreach and Education Commonwealth Scientific and Industrial Research Organisation December 21 2004 archived from the original on 2013 12 03 retrieved 2012 01 16 Cox Arthur N Becker Stephen A Pesnell W Dean 2000 Chapter 20 Theoretical Stellar Evolution PDF Allen s astrophysical quantities 4th ed New York Springer p 516 ISBN 0 387 98746 0 archived from the original PDF on 2016 03 04 retrieved 2012 01 25 See table 20 5 in Chinese AEEA Activities of Exhibition and Education in Astronomy 天文教育資訊網 2006 年 7 月 11 日External links editGorgonea Tertia Retrieved from https en wikipedia org w index php title Rho Persei amp oldid 1176936088, wikipedia, wiki, book, books, library,

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