SW Andromedae
{{Short description|Star in the constellation Andromeda}}
{{Starbox begin
| name = SW Andromedae
}}
{{Starbox observe
| epoch = J2000
| constell = Andromeda
}}
{{Starbox character
| appmag_1_passband = U
| appmag_1 = {{val|10.287|0.20}}
| appmag_2_passband = B
| appmag_2 = {{val|10.097|0.006}}
| appmag_3_passband = V
| appmag_3 = {{val|9.692|0.006}}
| appmag_4_passband = Rc
| appmag_4 = {{val|9.433|0.020}}
| appmag_5_passband = Ic
| appmag_5 = {{val|9.169|0.008}}
| appmag_6_passband = J
| appmag_6 = {{val|8.757|0.020}}
| appmag_7_passband = H
| appmag_7 = {{val|8.590|0.013}}
| appmag_8_passband = Ks
| appmag_8 = {{val|8.511|0.009}}
| b-v =
| u-b =
| variable = RRab Lyrae
}}
{{Starbox astrometry
| radial_v =
| prop_mo_ra = {{val|−6.638|(29)}}
| prop_mo_dec = {{val|−18.906|(26)}}
| parallax = 1.77
| p_error = 0.26
}}
{{Starbox detail
| mass = {{val|0.26|0.04}}
| radius = {{val|4.51|–|5.05}}
| luminosity = {{val|39.8|4}}
| gravity =
| temperature = 6644
| metal_fe =
| rotation =
| rotational_velocity =
| age_myr =
}}
{{Starbox catalog
| names = {{odlist | 2MASS=J00234308+2924036 | BD=+28 54 | HIP=1878 | TYC=1737-1702-1 | V=SW And}}
}}
{{Starbox reference
| Simbad = V*+SW+And
}}
{{Starbox end}}
File:SW Andromedae TESS folded lightcurve.png of the RR Lyrae variable SW Andromedae recorded by NASA's Transiting Exoplanet Survey Satellite (TESS)]]
SW Andromedae is a variable star in the constellation of Andromeda. It is classified as an RR Lyrae star, and varies from an apparent magnitude of 10.09 at minimum brightness to a magnitude of 9.14 at maximum brightness with a period of 0.44226 days. It exhibits the Blazhko effect, and its period is decreasing.
The discovery of this star by Annie Jump Cannon was announced in 1907. 461 photographic plates, spanning the time interval from November 14, 1889 through November 16, 1906 were examined, and an initial period of 0.49932 days was derived. SW Andromedae was given its variable star designation in 1907.
Notes
{{reflist|group="note"|refs=
Since SW Andromedae is a variable star these magnitudes are means sampled over the light curve.
}}
References
{{reflist|refs=
[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?V*%20SW%20And SW And], database entry, Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID [http://cdsarc.u-strasbg.fr/viz-bin/Cat?II/250 II/250] Accessed on line 2014-07-02.
| last1=McNamara | first1=D. H. | last2=Feltz | first2=K. A., Jr.
| title=A photometric study of SW Andromedae
| journal=Publications of the Astronomical Society of the Pacific
| date=October 1977 | volume=89 |pages=699–703 | doi=10.1086/130212 | bibcode=1977PASP...89..699M
| url=https://articles.adsabs.harvard.edu/pdf/1977PASP...89..699M | access-date=5 November 2024}}
| last1=Skarka | first1=M.
| title=Bright Blazhko RRab Lyrae stars observed by ASAS and the SuperWASP surveys
| journal=Astronomy & Astrophysics | date=February 2014 | volume=562 | page=A90
| doi=10.1051/0004-6361/201322491 | arxiv=1402.3111
| bibcode=2014A&A...562A..90S
| url=https://www.aanda.org/articles/aa/pdf/2014/02/aa22491-13.pdf |access-date=5 November 2024}}
| title=Benennung von neu entdeckten veränderlichen Sternen
| journal=Astronomische Nachrichten | date=November 1907 | volume=176 | issue=12 | pages=181–194
| bibcode=1907AN....176..181. | doi=10.1002/asna.19071761202
|url=https://articles.adsabs.harvard.edu/pdf/1907AN....176..181. |access-date=5 November 2024 | last1=Duné | last2=Hartwig | last3=Müller }}
| title=Fundamental parameters of RR Lyrae stars from multicolour photometry and Kurucz atmospheric models – III. SW And, DH Peg, CU Com and DY Peg
| last1=Barcza | first1=S. | last2=Benkő | first2=J. M.
| journal=Monthly Notices of the Royal Astronomical Society | volume=442 | issue=2 | pages=1863–1876
| year=2014 | arxiv=1405.4184 | bibcode=2014MNRAS.442.1863B | doi=10.1093/mnras/stu978
| doi-access=free | s2cid=119182612 }}
{{Cite Gaia EDR3|2857456211775108480}}
| title=Standard Galactic Field RR Lyrae. I. Optical to Mid-infrared Phased Photometry
| last1=Monson | first1=Andrew J. | last2=Beaton | first2=Rachael L. | last3=Scowcroft
| first3=Victoria | last4=Freedman | first4=Wendy L. | last5=Madore | first5=Barry F.
| last6=Rich | first6=Jeffrey A. | last7=Seibert | first7=Mark
| last8=Kollmeier | first8=Juna A. | last9=Clementini | first9=Gisella
| display-authors=1 | journal=The Astronomical Journal | volume=153 | issue=3 | at=96 | year=2017
| arxiv=1703.01520 | bibcode=2017AJ....153...96M | doi=10.3847/1538-3881/153/3/96
| s2cid=59322123 | doi-access=free }}
{{cite simbad | title=V* SW And | access-date=2018-04-21 }}
| last1=Fleming | first1=Williamina | last2=Cannon | first2=Annie J.
| last3=Wells | first3=L. D. | last4=Pickering | first4=Edward C.
| title=Stars Having Peculiar Spectra. 18 New Variable Stars
| journal=Harvard College Observatory Circular | date=January 1907 | volume=124 | pages=1–4
| bibcode=1907HarCi.124....1F | url=https://articles.adsabs.harvard.edu/pdf/1907HarCi.124....1F | access-date=5 November 2024}}
}}
{{Stars of Andromeda}}
{{DEFAULTSORT:SW Andromedae}}
Category:Andromeda (constellation)
Category:Durchmusterung objects
{{Var-star-stub}}