IK ????? ??????

?? ?? ?????
	???? ?? ?? ????? ?????? ?? ????? ????? ??????.
??????? ????? ; ???? J2000 ???????? J2000
?????	????? ??????
???? ??????	21 ?? 26 ? 26.6624 ?
?????	+19° 22′ 32.304″
????? ??????? (V)	6.078
???????
??? ?????	A8m: /DA
U?B ???? ?????	0.03 /?
B?V ???? ?????	0.24 /?
??? ??????	Delta Scuti
???????? ???????
?????? ???????? (R v )	-11.4 ??/?
?????? ?????? (μ)	80.23 17.28
?????? (π)	21.72 ± 0.78 ?.?
?????	150 ± 5 ?.? ; (46 ± 2 ?.? )
????? ?????? (M V )	2.762
??????
????	1.65 /1.15 ? ?
??? ???	1.6 /0.006 ?? ?
?????	8.0/0.12 ? ?
?????? ????? (log g )	4.25 /8.95 ??.?.??
???? ???????	7,700 /35,500 ?
??????	117 /? % Sun
?????	< 32.5 /? km/s
???	5?60 × 10 7 ???
?????? ????
	AB: V* IK Peg, HR 8210 ? BD +18°4794 ? HD 204188 ? SAO 107138 ? HIP 105860 . ; B: WD 2124+191, EUVE J2126+193.
	????? ????? - ?????

?? ?? ????? ( ?? ?? ????? ?????? ) ( ??????????? : K Pegasi )? ?? (HR 8210) ?? ???? ????? ?? ?????? ?? ????? ????? ?????? ? ??? ??? ????? ???? ?????? 150 ??? ????? ?? ?????? ??????. ????? ??????? ?????? ??????? ????? (IK Pegasi A) ?? ???? ????? ??????? ?????? (IK Pegasi B) ??? ???? ??????? ??? ????? ????? ?? 21.7 ???? ?????? ??? ???? ????? 31 ????? ???? ???? ?? 19 ????? ???? ?? 0.21 ???? ????? . ???? ???? ?? ???? ????? ??? ????? .

IK Pegasi B ?? ???? ????? ???? ???? ?????? ?????? ???? ????? ??????? ??????? ??? ????? ???? ?? ??????? ?? ???? ??? ???? ??? ??? ???? ????? ?????? ?? ????? ?????? ?? ?????? ?????? ???????. ?????? ????? ????? ?????? ?? ?? ??????????? 1.4 ???? ????? ^[9] ?????? ??? ??? ????? ???? ??? 1? ^[10]

?????? ????? [ ??? ]

???? ?????? ?????? ??? ???? ??? ??? ?????? ??? ???? BD +18°4794B ?? ??? 1862 .???? ?? ??? ???? ??? 1908 ?? ???? ????? ?????? ?????? ???????? ?????? ?????? ?????? ??? ???? HR 8210. ^[12]

????? ≪?? ?? ?????≫ ???? ????? ?????? ?????? ?????? ???????? ???? ???? ??????? ?????? ???????? ^[13]

????? ????? ?????? ??????? ???? ????? ?? ?????? ??????? ???? ????? ???? ?????. ???? ??? ???????? ????? ???? ?????? ?????? ?????? ??????? ?? ????? ???? ??? ???? ????? ????? ?? ????? ?????? ?????? ????.???? ??? ???????? ???? ?????? ????? ????? ?????? ???????? ??????? ???? ???? ??? ?????.

?? ??? 1927? ?????? ?????? ????? ????? ?????? ??? ??????? ????? ?????? ???? ???? ??????? ????? ???????. ????? ??? ?? ?????? ????? 21.724 ???. ??? ??? ??? ????? ???????? ??????? ?????? 0.027 ????. ??? ?? ???? ??? ?????? ???? 41.5 ??/?????? ????? ?? ?????? ?????? ?????? ??????? ??? ??? ?? ??? ?????? ??????. ^[14]

??????? [ ??? ]

^ ????? ?????? M _v ?????? ?? ????:
M _v = V + 5(log ₁₀ π + 1) = 2.762
??? V ?? ????? ?????? ? π ??????. ????:
Tayler? Roger John (1994). The Stars: Their Structure and Evolution . Cambridge University Press. ?. 16 . ISBN : 0-521-45885-4 . {{ ??????? ????? }}: ????? ?????????: ??????? ?????? ( link )
^ ????? ???:
${\begin{smallmatrix}{\frac {L}{L_{sun}}}=\left({\frac {R}{R_{sun}}}\right)^{2}\left({\frac {T_{eff}}{T_{sun}}}\right)^{4}\end{smallmatrix}}$
??? L ???????, R ??? ????? ? T _eff ?? ???? ??????? ???????. See:
Krimm? Hans (19 ????? 1997). "Luminosity, Radius and Temperature" . Hampden-Sydney College. ????? ?? ????? ?? 2012-03-22 . ???? ???? ?????? 2007-05-16 .

????? [ ??? ]

^ ^? ^? ^? ^? ^? ^? ^? ^? ^? "SIMBAD Query Result: HD 204188 -- Spectroscopic binary" ? SIMBAD ? Centre de Donnees astronomiques de Strasbourg? ????? ?? ????? ?? 2022-10-17 ? ???? ???? ?????? 2009-01-02 ? Note: some results were queried via the "Display all measurements" function on the web page.
^ ^? ^? Kurtz? D. W. (1978)? "Metallicism and pulsation - The marginal metallic line stars"? Astrophysical Journal ? ?. 221? ?. 869?880? Bibcode : 1978ApJ...221..869K ? DOI : 10.1086/156090
^ ^? ^? ^? Barstow? M. A.? Holberg? J. B.? Koester? D. (1994)? "Extreme Ultraviolet Spectrophotometry of HD16538 and HR:8210 Ik-Pegasi"? Monthly Notices of the Royal Astronomical Society ? ?. 270? ?. 516? Bibcode : 1994MNRAS.270..516B ? DOI : 10.1093/mnras/270.3.516
^ ^? ^? ^? ^? ^? Wonnacott? D.? Kellett? B. J.? Smalley? B.? Lloyd? C. (1994)? "Pulsational Activity on Ik-Pegasi"? Monthly Notices of the Royal Astronomical Society ? ?. 267? ?. 1045?1052? Bibcode : 1994MNRAS.267.1045W ? DOI : 10.1093/mnras/267.4.1045
^ ^? ^? Landsman? W.? Simon? T.? Bergeron? P. (1999)? "The hot white-dwarf companions of HR 1608, HR 8210, and HD 15638"? Publications of the Astronomical Society of the Pacific ? ?. 105? ?. 841?847? Bibcode : 1993PASP..105..841L ? DOI : 10.1086/133242
^ ^? ^? ^? Smalley? B.? ?????? (1996)? "The chemical composition of IK Pegasi"? Monthly Notices of the Royal Astronomical Society ? ?. 278? ?. 688?696? Bibcode : 1996MNRAS.278..688S ? DOI : 10.1093/mnras/278.3.688
^ Vennes? S.? Christian? D. J.? Thorstensen? J. R. (1998)? "Hot White Dwarfs in the Extreme-Ultraviolet Explorer Survey. IV. DA White Dwarfs with Bright Companions" ? The Astrophysical Journal ? ?. 502? ?. 763?787? Bibcode : 1998ApJ...502..763V ? DOI : 10.1086/305926 ? ????? ?? ????? ?? 2020-01-04 ? ???? ???? ?????? 2010-01-05 {{ ??????? }}: |archive-date= / |archive-url= timestamp mismatch ( ?????? )
^ Vallerga? John (1998)? "The Stellar Extreme-Ultraviolet Radiation Field"? Astrophysical Journal ? ?. 497? ?. 77?115? Bibcode : 1998ApJ...497..921V ? DOI : 10.1086/305496
^ Mazzali? P. A.? Ropke? F. K.? Benetti? S.? Hillebrandt? W. (2007). "A Common Explosion Mechanism for Type Ia Supernovae". Science (PDF). ?. 315 ?. 5813: 825?828. arXiv : astro-ph/0702351v1 . Bibcode : 2007Sci...315..825M . DOI : 10.1126/science.1136259 . PMID : 17289993 .
^ Wonnacott? D.? Kellett? B. J.? Stickland? D. J. (1993)? "IK Peg - A nearby, short-period, Sirius-like system"? Monthly Notices of the Royal Astronomical Society ? ?. 262? ?. 277?284? Bibcode : 1993MNRAS.262..277W ? DOI : 10.1093/mnras/262.2.277
^ For an explanation of the star colors, see: "The Colour of Stars" . Australia Telescope Outreach and Education. 21 ?????? 2004. ????? ?? ????? ?? 2013-12-03.
^ Pickering? Edward Charles (1908)? "Revised Harvard photometry: a catalogue of the positions, photometric magnitudes and spectra of 9110 stars, mainly of the magnitude 6.50, and brighter observed with the 2 and 4-???? (100 ???) meridian photometers"? Annals of the Astronomical Observatory of Harvard College ? ?. 50? ?. 182? Bibcode : 1908AnHar..50....1P
^ Rabinowitz? Harold? Vogel? Suzanne (2009)? The manual of scientific style: a guide for authors, editors, and researchers ? Academic Press? ?. 364? ISBN : 0-12-373980-2 ? ????? ?? ????? ?? 2019-12-07
^ Harper? W. E. (1927)? "The orbits of A Persei and HR 8210"? Publications of the Dominion Astrophysical Observatory ? ?. 4? ?. 161?169? Bibcode : 1927PDAO....4..161H

Davies? Ben (2006)? Supernova events ? ????? ?? ????? ?? 2016-03-03 ? ???? ???? ?????? 2007-06-01
Richmond? Michael (8 ????? 2005)? Will a Nearby Supernova Endanger Life on Earth? ? The Amateur Sky Survey? ????? ?? ????? ?? 2016-05-05 ? ???? ???? ?????? 2007-06-07
Tzekova? Svetlana Yordanova (2004)? IK Pegasi (HR 8210) ? ESO (European Organisation for Astronomical Research in the Southern Hemisphere)? ????? ?? ????? ?? 2019-10-25 ? ???? ???? ?????? 2007-09-30

IK ????? ?????? ?? ???????? ??????? :

??? ?????? ????? ?? ?????.

[a-4] ????? ?????? M _v ?????? ?? ????:
M _v = V + 5(log ₁₀ π + 1) = 2.762
??? V ?? ????? ?????? ? π ??????. ????:
Tayler? Roger John (1994). The Stars: Their Structure and Evolution . Cambridge University Press. ?. 16 . ISBN : 0-521-45885-4 . {{ ??????? ????? }}: ????? ?????????: ??????? ?????? ( link )

[b-7] ????? ???:
${\begin{smallmatrix}{\frac {L}{L_{sun}}}=\left({\frac {R}{R_{sun}}}\right)^{2}\left({\frac {T_{eff}}{T_{sun}}}\right)^{4}\end{smallmatrix}}$
??? L ???????, R ??? ????? ? T _eff ?? ???? ??????? ???????. See:
Krimm? Hans (19 ????? 1997). "Luminosity, Radius and Temperature" . Hampden-Sydney College. ????? ?? ????? ?? 2012-03-22 . ???? ???? ?????? 2007-05-16 .

[simbad-1] ? ^? ^? ^? ^? ^? ^? ^? ^? "SIMBAD Query Result: HD 204188 -- Spectroscopic binary" ? SIMBAD ? Centre de Donnees astronomiques de Strasbourg? ????? ?? ????? ?? 2022-10-17 ? ???? ???? ?????? 2009-01-02 ? Note: some results were queried via the "Display all measurements" function on the web page.

[apj221-2] ? ^? Kurtz? D. W. (1978)? "Metallicism and pulsation - The marginal metallic line stars"? Astrophysical Journal ? ?. 221? ?. 869?880? Bibcode : 1978ApJ...221..869K ? DOI : 10.1086/156090

[mnras270-3] ? ^? ^? Barstow? M. A.? Holberg? J. B.? Koester? D. (1994)? "Extreme Ultraviolet Spectrophotometry of HD16538 and HR:8210 Ik-Pegasi"? Monthly Notices of the Royal Astronomical Society ? ?. 270? ?. 516? Bibcode : 1994MNRAS.270..516B ? DOI : 10.1093/mnras/270.3.516

[mnras267-5] ? ^? ^? ^? ^? Wonnacott? D.? Kellett? B. J.? Smalley? B.? Lloyd? C. (1994)? "Pulsational Activity on Ik-Pegasi"? Monthly Notices of the Royal Astronomical Society ? ?. 267? ?. 1045?1052? Bibcode : 1994MNRAS.267.1045W ? DOI : 10.1093/mnras/267.4.1045

[pasp105-6] ? ^? Landsman? W.? Simon? T.? Bergeron? P. (1999)? "The hot white-dwarf companions of HR 1608, HR 8210, and HD 15638"? Publications of the Astronomical Society of the Pacific ? ?. 105? ?. 841?847? Bibcode : 1993PASP..105..841L ? DOI : 10.1086/133242

[nras278-8] ? ^? ^? Smalley? B.? ?????? (1996)? "The chemical composition of IK Pegasi"? Monthly Notices of the Royal Astronomical Society ? ?. 278? ?. 688?696? Bibcode : 1996MNRAS.278..688S ? DOI : 10.1093/mnras/278.3.688

[apj502-9] Vennes? S.? Christian? D. J.? Thorstensen? J. R. (1998)? "Hot White Dwarfs in the Extreme-Ultraviolet Explorer Survey. IV. DA White Dwarfs with Bright Companions" ? The Astrophysical Journal ? ?. 502? ?. 763?787? Bibcode : 1998ApJ...502..763V ? DOI : 10.1086/305926 ? ????? ?? ????? ?? 2020-01-04 ? ???? ???? ?????? 2010-01-05 {{ ??????? }}: |archive-date= / |archive-url= timestamp mismatch ( ?????? )

[apj497_2_77-10] Vallerga? John (1998)? "The Stellar Extreme-Ultraviolet Radiation Field"? Astrophysical Journal ? ?. 497? ?. 77?115? Bibcode : 1998ApJ...497..921V ? DOI : 10.1086/305496

[11] Mazzali? P. A.? Ropke? F. K.? Benetti? S.? Hillebrandt? W. (2007). "A Common Explosion Mechanism for Type Ia Supernovae". Science (PDF). ?. 315 ?. 5813: 825?828. arXiv : astro-ph/0702351v1 . Bibcode : 2007Sci...315..825M . DOI : 10.1126/science.1136259 . PMID : 17289993 .

[mnras262-12] Wonnacott? D.? Kellett? B. J.? Stickland? D. J. (1993)? "IK Peg - A nearby, short-period, Sirius-like system"? Monthly Notices of the Royal Astronomical Society ? ?. 262? ?. 277?284? Bibcode : 1993MNRAS.262..277W ? DOI : 10.1093/mnras/262.2.277

[13] For an explanation of the star colors, see: "The Colour of Stars" . Australia Telescope Outreach and Education. 21 ?????? 2004. ????? ?? ????? ?? 2013-12-03.

[Pickering1908-14] Pickering? Edward Charles (1908)? "Revised Harvard photometry: a catalogue of the positions, photometric magnitudes and spectra of 9110 stars, mainly of the magnitude 6.50, and brighter observed with the 2 and 4-???? (100 ???) meridian photometers"? Annals of the Astronomical Observatory of Harvard College ? ?. 50? ?. 182? Bibcode : 1908AnHar..50....1P

[rabinowitz_vogel2009-15] Rabinowitz? Harold? Vogel? Suzanne (2009)? The manual of scientific style: a guide for authors, editors, and researchers ? Academic Press? ?. 364? ISBN : 0-12-373980-2 ? ????? ?? ????? ?? 2019-12-07

[pdao4_161-16] Harper? W. E. (1927)? "The orbits of A Persei and HR 8210"? Publications of the Dominion Astrophysical Observatory ? ?. 4? ?. 161?169? Bibcode : 1927PDAO....4..161H

[1]

[2]

[3]

[nb 1]

[4]

[5]

[nb 2]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[13]

[14]

?? ?? ?????
???? ?? ?? ????? ?????? ?? ????? ????? ??????.
??????? ????? ???? J2000 ???????? J2000
?????	????? ??????
???? ??????	21 ^?? 26 ^? 26.6624 ^?^[1]
?????	+19° 22′ 32.304″ ^[1]
????? ??????? (V)	6.078 ^[1]
???????
??? ?????	A8m: ^[2]/DA ^[3]
U?B ???? ?????	0.03 ^[1]/?
B?V ???? ?????	0.24 ^[1]/?
??? ??????	Delta Scuti ^[2]
???????? ???????
?????? ???????? (R _v)	-11.4 ^[1] ??/?
?????? ?????? (μ)	80.23 ^[1]17.28 ^[1]
?????? (π)	21.72 ± 0.78 ?.?
?????	150 ± 5 ?.? (46 ± 2 ?.? )
????? ?????? (M _V)	2.762 ^{[nb 1]}
??????
????	1.65 ^[4]/1.15 ^[5] ? _?
??? ???	1.6 ^[4]/0.006 ^[3] ?? _?
?????	8.0/0.12 ^{[nb 2]} ? _?
?????? ????? (log g )	4.25 ^[4]/8.95 ^[3] ??.?.??
???? ???????	7,700 ^[6]/35,500 ^[5] ?
??????	117 ^[4]^[6]/? % Sun
?????	< 32.5 ^[6]/? km/s
???	5?60 × 10 ⁷^[4] ???
?????? ????
AB: V* IK Peg, HR 8210 ? BD +18°4794 ? HD 204188 ? SAO 107138 ? HIP 105860 . ^[1] B: WD 2124+191, EUVE J2126+193. ^[7]^[8]
????? ????? - ?????