ස ර යස යන ර ත ර අහස ද ස වන 1 46 ක ද ෂ ට මය ද ශ ය ව ශ ලත වයක සහ තව එය ඊලඟ ද ප ත මත ත රක ව වන ට වඩ ද ග ණයක ද ප ත මත ය Siri

සිරියස් යනු රාත්‍රි අහසේ දිස්වන −1.46 ක දෘෂ්ටිමය දාශ්‍ය විශාලත්වයක් සහිතවූ එය, ඊලඟ දීප්තිමත් තාරකාව වන ට වඩා දෙගුණයක් දීප්තිමත්ය.

Sirius
Observation data
සිරියස් හි පිහිටීම (රවුම් කොට දක්වා ඇත)


Sirius A
	06^පැය 45^විනා 08.917^තත්
	−16° 42′ 58.02″
Apparent magnitude (V)	−1.46
Sirius B
	06^පැය 45^විනා 09.0^තත්
	−16° 43′ 06″
Apparent magnitude (V)	8.44
Characteristics
Sirius A

	A0mA1 Va
U−B	−0.05
B−V	+0.00
Sirius B
	White dwarf
	DA2
U−B	−1.04
B−V	−0.03


(R_v)	−5.50 km/s


Sirius A
(μ)	RA: −546.01 /yr Dec.: −1,223.07 /yr
(π)	379.21 ± 1.58
	8.60 ± 0.04 (2.64 ± 0.01 )
(M_V)	+1.43


Sirius B
(μ)	RA: −461.571 /yr Dec.: −914.520 /yr
(π)	374.4896 ± 0.2313
	8.709 ± 0.005 (2.670 ± 0.002 )
(M_V)	+11.18

Orbit
Primary	α Canis Majoris A
Companion	α Canis Majoris B
(P)	50.1284 ± 0.0043 yr
(a)	7.4957 ± 0.0025″
(e)	0.59142 ± 0.00037
(i)	136.336 ± 0.040°
(Ω)	45.400 ± 0.071°
(T)	1,994.5715 ± 0.0058
(ω) (secondary)	149.161 ± 0.075°
තොරතුරු පුවරුව
Sirius A
	2.063±0.023 M_☉
	1.711
	25.4
(log g)	4.33
	9,940 K
[Fe/H]	0.50
(v sin i)	16 km/s
	242±5
Sirius B
	1.018 ± 0.011 M_☉
	0.0084 ± 3%
Luminosity	0.056
(log g)	8.57
	25,000 ± 200 K
(Age)	228+10 −8

Dog Star, Aschere, Canicula, Al Shira, Sothis, Alhabor, Mrgavyadha, Lubdhaka, Tenrōsei, Canis Majoris ( $α$ CMa), Canis Majoris (9 CMa), 48915, 2491, −16°1591, 244, 219, 5423, 2638, 32349
Sirius B: EGGR 49, WD 0642-166, 1577.00
Database references
	A
	B

ආශ්‍රිත ලිපි

සටහන්

මූලාශ්‍ර

උපහරණ

"Sirius". Dictionary.com Unabridged (v 1.1). Random House, Inc. සම්ප්‍රවේශය 6 April 2008.
Fabricius, C.; Høg, E.; Makarov, V.V.; Mason, B.D.; Wycoff, G.L.; Urban, S.E. (2002). "The Tycho double star catalogue". Astronomy and Astrophysics. 384: 180–189. :2002A&A...384..180F. doi:10.1051/0004-6361:20011822.
Hoffleit, D.; Warren, W. H. Jr. (1991). "Entry for HR 2491". Bright Star Catalogue (5th Revised Ed. (Preliminary Version) ed.). . :1991bsc..book.....H.
Gianninas, A.; Bergeron, P.; Ruiz, M.T. (2011). "A spectroscopic survey and analysis of bright, hydrogen-rich white dwarfs". . 743 (2): 138. :1109.3171. :2011ApJ...743..138G. doi:10.1088/0004-637X/743/2/138. 119210906.
Holberg, J.B.; Oswalt, T.D.; Sion, E.M.; Barstow, M.A.; Burleigh, M.R. (2013). "Where are all the Sirius-like binary systems?". Monthly Notices of the Royal Astronomical Society. 435 (3): 2077–2091. :1307.8047. :2013MNRAS.435.2077H. doi:10.1093/mnras/stt1433. 54551449.
Gray, R.O.; Corbally, C.J.; Garrison, R.F.; McFadden, M.T.; Robinson, P.E. (2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of stars earlier than M0 within 40 parsecs: The Northern Sample. I". Astronomical Journal. 126 (4): 2048–2059. :astro-ph/0308182. :2003AJ....126.2048G. doi:10.1086/378365. 119417105.
McCook, G. P.; Sion, E. M. (2014). "Entry for WD 0642-166". VizieR Online Data Catalog. . :2016yCat....102035M.
Gontcharov, G.A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. :1606.08053. :2006AstL...32..759G. doi:10.1134/S1063773706110065. 1063-7737. 119231169.
van Leeuwen, F. (November 2007). "Validation of the new Hipparcos reduction". . 474 (2): 653–664. :0708.1752. :2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 18759600.
Malkov, O. Yu. (December 2007). "Mass-luminosity relation of intermediate-mass stars". Monthly Notices of the Royal Astronomical Society. 382 (3): 1073–1086. :2007MNRAS.382.1073M. doi:10.1111/j.1365-2966.2007.12086.x.
Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. :2208.00211. :2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. 244398875. Gaia DR3 record for this source at .
Bond, Howard E.; Schaefer, Gail H.; Gilliland, Ronald L.; Holberg, Jay B.; Mason, Brian D.; Lindenblad, Irving W.; et al. (2017). "The Sirius system and its astrophysical puzzles: Hubble Space Telescope and ground-based astrometry". The Astrophysical Journal. 840 (2): 70. :1703.10625. :2017ApJ...840...70B. doi:10.3847/1538-4357/aa6af8. 51839102.
Liebert, James; Young, P. A.; Arnett, David; Holberg, J. B.; Williams, Kurtis A. (2005). "The Age and Progenitor Mass of Sirius B". The Astrophysical Journal. 630 (1): L69–L72. :astro-ph/0507523. :2005ApJ...630L..69L. doi:10.1086/462419. 8792889.
Adelman, Saul J. (8–13 July 2004). "The Physical Properties of normal A stars". 2004. Poprad, Slovakia: Cambridge University Press. pp. 1–11.
doi:10.1017/S1743921304004314
.
: 2004IAUS..224....1A
.
Qiu, H. M.; Zhao, G.; Chen, Y. Q.; Li, Z. W. (2001). "The Abundance Patterns of Sirius and Vega". The Astrophysical Journal. 548 (2): 953–965. :2001ApJ...548..953Q. doi:10.1086/319000.
Royer, F.; Gerbaldi, M.; Faraggiana, R.; Gómez, A. E. (2002). "Rotational velocities of A-type stars. I. Measurement of v sin i in the southern hemisphere". Astronomy and Astrophysics. 381 (1): 105–121. :astro-ph/0110490. :2002A&A...381..105R. doi:10.1051/0004-6361:20011422. 13133418.
Holberg, J. B.; Barstow, M. A.; Bruhweiler, F. C.; Cruise, A. M.; Penny, A. J. (1998). "Sirius B: A New, More Accurate View". The Astrophysical Journal. 497 (2): 935–942. :1998ApJ...497..935H. doi:10.1086/305489.
(1976). "Cooling times, luminosity functions and progenitor masses of degenerate dwarfs". . 49: 375–385. :1976A&A....49..375S.
Hinckley, Richard Allen (1899). Star-names and Their Meanings. New York: G. E. Stechert. pp. 117–129.
Gingerich, O. (1987). "Zoomorphic astrolabes and the introduction of Arabic star names into Europe". Annals of the New York Academy of Sciences. 500 (1): 89–104. :1987NYASA.500...89G. doi:10.1111/j.1749-6632.1987.tb37197.x. 84102853.
Singh, Nagendra Kumar (2002). Encyclopaedia of Hinduism, A Continuing Series. Anmol Publications PVT. LTD. p. 794. ISBN .
Spahn, Mark; Hadamitzky, Wolfgang; Fujie-Winter, Kimiko (1996). The Kanji dictionary. Tuttle language library. Tuttle Publishing. p. 724. ISBN .
"Sirius A". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. සම්ප්‍රවේශය 20 October 2007.
"Sirius B". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. සම්ප්‍රවේශය 23 October 2007.

භාහිර සබැඳි

NASA Astronomy Picture of the Day: Sirius B in x-ray (6 October 2000)
"Sirius Matters: Alien Contact". Chandra X-ray Center. 28 November 2000. සම්ප්‍රවේශය 21 March 2021.
Sankey, John. "Getting Sirius About Time". www.johnsankey.ca. සම්ප්‍රවේශය 21 March 2021.
Barker, Tho.; Stukeley, W. (1760). "Remarks on the Mutations of the Stars". Philosophical Transactions. 51: 498–504. doi:10.1098/rstl.1759.0049. 105393.

: 06^h 45^m 08.9173^s, −16° 42′ 58.017″

[Dictionary.com-1] "Sirius". Dictionary.com Unabridged (v 1.1). Random House, Inc. සම්ප්‍රවේශය 6 April 2008.

[tychods-2] Fabricius, C.; Høg, E.; Makarov, V.V.; Mason, B.D.; Wycoff, G.L.; Urban, S.E. (2002). "The Tycho double star catalogue". Astronomy and Astrophysics. 384: 180–189. :2002A&A...384..180F. doi:10.1051/0004-6361:20011822.

[Hoffleit1991-3] Hoffleit, D.; Warren, W. H. Jr. (1991). "Entry for HR 2491". Bright Star Catalogue (5th Revised Ed. (Preliminary Version) ed.). . :1991bsc..book.....H.

[gianninas-4] Gianninas, A.; Bergeron, P.; Ruiz, M.T. (2011). "A spectroscopic survey and analysis of bright, hydrogen-rich white dwarfs". . 743 (2): 138. :1109.3171. :2011ApJ...743..138G. doi:10.1088/0004-637X/743/2/138. 119210906.

[holberg2013-5] Holberg, J.B.; Oswalt, T.D.; Sion, E.M.; Barstow, M.A.; Burleigh, M.R. (2013). "Where are all the Sirius-like binary systems?". Monthly Notices of the Royal Astronomical Society. 435 (3): 2077–2091. :1307.8047. :2013MNRAS.435.2077H. doi:10.1093/mnras/stt1433. 54551449.

[nstars-6] Gray, R.O.; Corbally, C.J.; Garrison, R.F.; McFadden, M.T.; Robinson, P.E. (2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of stars earlier than M0 within 40 parsecs: The Northern Sample. I". Astronomical Journal. 126 (4): 2048–2059. :astro-ph/0308182. :2003AJ....126.2048G. doi:10.1086/378365. 119417105.

[McCook2006-7] McCook, G. P.; Sion, E. M. (2014). "Entry for WD 0642-166". VizieR Online Data Catalog. . :2016yCat....102035M.

[Gontcharov2006-8] Gontcharov, G.A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. :1606.08053. :2006AstL...32..759G. doi:10.1134/S1063773706110065. 1063-7737. 119231169.

[aaa474_2_653-9] van Leeuwen, F. (November 2007). "Validation of the new Hipparcos reduction". . 474 (2): 653–664. :0708.1752. :2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 18759600.

[malkov2007-10] Malkov, O. Yu. (December 2007). "Mass-luminosity relation of intermediate-mass stars". Monthly Notices of the Royal Astronomical Society. 382 (3): 1073–1086. :2007MNRAS.382.1073M. doi:10.1111/j.1365-2966.2007.12086.x.

[Gaia3-11] Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. :2208.00211. :2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. 244398875. Gaia DR3 record for this source at .

[bond-12] Bond, Howard E.; Schaefer, Gail H.; Gilliland, Ronald L.; Holberg, Jay B.; Mason, Brian D.; Lindenblad, Irving W.; et al. (2017). "The Sirius system and its astrophysical puzzles: Hubble Space Telescope and ground-based astrometry". The Astrophysical Journal. 840 (2): 70. :1703.10625. :2017ApJ...840...70B. doi:10.3847/1538-4357/aa6af8. 51839102.

[Liebert2005-13] Liebert, James; Young, P. A.; Arnett, David; Holberg, J. B.; Williams, Kurtis A. (2005). "The Age and Progenitor Mass of Sirius B". The Astrophysical Journal. 630 (1): L69–L72. :astro-ph/0507523. :2005ApJ...630L..69L. doi:10.1086/462419. 8792889.

[Adelman2004-14] Adelman, Saul J. (8–13 July 2004). "The Physical Properties of normal A stars". 2004. Poprad, Slovakia: Cambridge University Press. pp. 1–11.
doi:10.1017/S1743921304004314
.
: 2004IAUS..224....1A
.

[Qiu2001-15] Qiu, H. M.; Zhao, G.; Chen, Y. Q.; Li, Z. W. (2001). "The Abundance Patterns of Sirius and Vega". The Astrophysical Journal. 548 (2): 953–965. :2001ApJ...548..953Q. doi:10.1086/319000.

[Royer2002-16] Royer, F.; Gerbaldi, M.; Faraggiana, R.; Gómez, A. E. (2002). "Rotational velocities of A-type stars. I. Measurement of v sin i in the southern hemisphere". Astronomy and Astrophysics. 381 (1): 105–121. :astro-ph/0110490. :2002A&A...381..105R. doi:10.1051/0004-6361:20011422. 13133418.

[Holberg1998-17] Holberg, J. B.; Barstow, M. A.; Bruhweiler, F. C.; Cruise, A. M.; Penny, A. J. (1998). "Sirius B: A New, More Accurate View". The Astrophysical Journal. 497 (2): 935–942. :1998ApJ...497..935H. doi:10.1086/305489.

[sweeney-18] (1976). "Cooling times, luminosity functions and progenitor masses of degenerate dwarfs". . 49: 375–385. :1976A&A....49..375S.

[Allen1899-19] Hinckley, Richard Allen (1899). Star-names and Their Meanings. New York: G. E. Stechert. pp. 117–129.

[gingerich-20] Gingerich, O. (1987). "Zoomorphic astrolabes and the introduction of Arabic star names into Europe". Annals of the New York Academy of Sciences. 500 (1): 89–104. :1987NYASA.500...89G. doi:10.1111/j.1749-6632.1987.tb37197.x. 84102853.

[Kumar2002-21] Singh, Nagendra Kumar (2002). Encyclopaedia of Hinduism, A Continuing Series. Anmol Publications PVT. LTD. p. 794. ISBN .

[Spahn1996-22] Spahn, Mark; Hadamitzky, Wolfgang; Fujie-Winter, Kimiko (1996). The Kanji dictionary. Tuttle language library. Tuttle Publishing. p. 724. ISBN .

[SIMBADa-23] "Sirius A". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. සම්ප්‍රවේශය 20 October 2007.

[SIMBADb-24] "Sirius B". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. සම්ප්‍රවේශය 23 October 2007.