Variable star in the constellation Perseus
HR 1170 , also known asHD 23728 andV376 Persei , is a star about 220light years from the Earth, in the constellationPerseus .[ 1] magnitude star, so it will be faintly visible to thenaked eye of an observer far fromcity lights . It is a variable star, whose brightness varies slightly from magnitude 5.77 to 5.91.[ 2]
Alight curve for V376 Persei, plotted fromTESS [ 10] Michel Breger announced that HR 1170 is aDelta Scuti variable star in 1969, based on observations taken over 6 hours and 10 minutes on October 13, 1967. He reported that it varied with a mean amplitude of 0.08 magnitudes, over a period of 2.2 hours.[ 11] variable star designation V376 Persei.[ 12]
Early investigations of HR 1170 showed that it has more than one pulsation period,[ 13] [ 14] beating with each other. Many investigators have tried to determine the modes of oscillation present in this star.[ 15] [ 16] [ 17] [ 18] [ 19] [ 20] [ 21] [ 19] [ 21]
^a b c d e f g h i Vallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties" .Astronomy and Astrophysics .674 : A1.arXiv :2208.00211 Bibcode :2023A&A...674A...1G .doi :10.1051/0004-6361/202243940 S2CID 244398875 . Gaia DR3 record for this source atVizieR .^a b c Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017)."General catalogue of variable stars: Version GCVS 5.1" .Astronomy Reports .61 (1): 80.Bibcode :2017ARep...61...80S .doi :10.1134/S1063772917010085 S2CID 125853869 . ^a b Netopil, Martin (August 2017)."Metallicity calibrations for dwarf stars and giants in the Geneva photometric system" .Monthly Notices of the Royal Astronomical Society .469 (3):3042– 3055.arXiv :1705.00883 Bibcode :2017MNRAS.469.3042N .doi :10.1093/mnras/stx1077 . Retrieved12 March 2023 . ^a b Oja, T. (August 1991)."UBV photometry of stars whose positions are accurately known. VI" .Astronomy and Astrophysics Supplement Series .89 :415– 419.Bibcode :1991A&AS...89..415O . Retrieved14 March 2023 . ^ Gontcharov, G. A. (November 2006)."Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system" .Astronomy Letters .32 (11):759– 771.arXiv :1606.08053 Bibcode :2006AstL...32..759G .doi :10.1134/S1063773706110065 . Retrieved12 March 2023 . ^ Barac, Natascha; Bedding, Timothy R.; Murphy, Simon J.; Hey, Daniel R. (October 2022)."Revisiting bright δ Scuti stars and their period-luminosity relation with TESS and Gaia DR3" .Monthly Notices of the Royal Astronomical Society .516 (2):2080– 2094.arXiv :2207.00343 Bibcode :2022MNRAS.516.2080B .doi :10.1093/mnras/stac2132 . Retrieved12 March 2023 . ^a b c Zorec, J.; Royer, F. (January 2012)."Rotational velocities of A-type stars. IV. Evolution of rotational velocities" .Astronomy and Astrophysics .537 : A120.arXiv :1201.2052 Bibcode :2012A&A...537A.120Z .doi :10.1051/0004-6361/201117691 . Retrieved12 March 2023 . ^ Soubiran, C.; Le Campion, J. F.; Cayrel de Strobel, G.; Caillo, A. (June 2010)."The PASTEL catalogue of stellar parameters" .Astronomy and Astrophysics .515 : A111.arXiv :1004.1069 Bibcode :2010A&A...515A.111S .doi :10.1051/0004-6361/201014247 . Retrieved12 March 2023 . ^ "HD 151804 -- Blue Supergiant" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2023-03-03 .^ "MAST: Barbara A. Mikulski Archive for Space Telescopes" . Space Telescope Science Institute. Retrieved11 March 2023 .^ Breger, M. (March 1969)."Short-period variability of B, A, and F stars. II. Photometry of new Delta Scuti stars" .Astronomical Journal .74 :166– 176.Bibcode :1969AJ.....74..166B .doi :10.1086/110788 ^ Kukarkin, B. V.; Kholopov, P. N.; Perova, N. B. (October 1970)."57th Name-List of Variable Stars" .Information Bulletin on Variable Stars .480 : 1.Bibcode :1970IBVS..480....1K . Retrieved12 March 2023 . ^ Warman, J.; Malacara, Z.; Breger, M. (November 1974)."The light curves of Delta Scuti stars HR 1170 and HR 7563" .Revista Mexicana de Astronomía y Astrofísica .1 :143– 150.Bibcode :1974RMxAA...1..143W . Retrieved14 March 2023 . ^ Jayasinghe, T.; Stanek, K. Z.; Kochanek, C. S.; Vallely, P. J.; Shappee, B. J.; Holoien, T. W. S.; Thompson, Todd A.; Prieto, J. L.; Pejcha, O.; Fausnaugh, M.; Otero, S.; Hurst, N.; Will, D. (April 2020)."The ASAS-SN catalogue of variable stars VI: an all-sky sample of δ Scuti stars" .Monthly Notices of the Royal Astronomical Society .493 (3):4186– 4208.arXiv :1910.14187 Bibcode :2020MNRAS.493.4186J .doi :10.1093/mnras/staa499 . Retrieved14 March 2023 . ^ Breger, M.; Bregman, J. N. (September 1975)."Period-luminosity-color relations and pulsation modes of pulsating variable stars" .Astrophysical Journal .200 :343– 353.Bibcode :1975ApJ...200..343B .doi :10.1086/153794 ^ Gupta, S. K. (May 1977)."Study of the Delta Scuti Star HR 1170" .Astrophysics and Space Science .48 (1):199– 206.Bibcode :1977Ap&SS..48..199G .doi :10.1007/BF00643051 . Retrieved14 March 2023 . ^ Pena, J. H.; Warman, J. (July 1979)."HR 1170 and HR 7331, two nonradial Delta Scuti pulsators" .Astronomical Journal .84 :1046– 1055.Bibcode :1979AJ.....84.1046P .doi :10.1086/112511 . Retrieved14 March 2023 . ^ Pena, J. H.; Warman, J. (April 1980)."On the periods of the del SCT star HR 1170" .Revista Mexicana de Astronomía y Astrofísica .5 :5– 7.Bibcode :1980RMxAA...5....5P . Retrieved14 March 2023 . ^a b Warman, J.; Pena, J. H.; Margrave, T. E. (October 1980)."Nonradial period structure of the del SCT star HR 1170" .Publications of the Astronomical Society of the Pacific .92 :696– 699.Bibcode :1980PASP...92..696W .doi :10.1086/130732 ^ Kurtz, D. W. (March 1981)."Radial and non-radial oscillations in the Del SCT star HR 1170" .Monthly Notices of the Royal Astronomical Society .194 :747– 754.Bibcode :1981MNRAS.194..747K .doi :10.1093/mnras/194.3.747 . Retrieved14 March 2023 . ^a b Ostermann, W. M. (February 1990)."Pulsation periods in theδ Scuti star HR 1170" .Astrophysics and Space Science .164 (1):87– 93.Bibcode :1990Ap&SS.164...87O .doi :10.1007/BF00653553 . Retrieved14 March 2023 .
