Gamma Lyrae: Difference between revisions

Gamma Lyrae
	Location of γ Lyrae
Observation data; Epoch J2000 Equinox J2000
Constellation	Lyra
Right ascension	18h 58m 56.62241s
Declination	+32° 41′ 22.4003″
Apparent magnitude (V)	3.24
Characteristics
Spectral type	B9 III
U−B color index	–0.125
B−V color index	–0.04
Distance	620 ± 30 ly ; (190 ± 10 pc)
Absolute magnitude (MV)	−3.14
Details
Rotational velocity (v sin i)	65 km/s
HR 7178, SAO 67663
Database references
SIMBAD	data

Browse history interactively

← Previous edit Next edit →

Content deleted Content added

VisualWikitext

Inline

Revision as of 22:11, 24 May 2024

Gamma Lyrae,

interstellar dust.^[7]

Nomenclature

γ Lyrae (Latinised to Gamma Lyrae) is the star's Bayer designation.

It bore the traditional names Sulafat (Sulaphat), from the

Working Group on Star Names (WGSN)^[12] to catalogue and standardize proper names for stars. The WGSN approved the name Sulafat for this star on 21 August 2016 and it is now so entered in the IAU Catalog of Star Names.^[10]

In

Chinese name

for Gamma Lyrae itself is 漸台三 (Jiāntāisān, English: the Third Star of Clepsydra Terrace).

Properties

This is a

radius of the Sun.^[17]

In 1909, Canadian astronomer

absorption lines of the components. He found that a period of 25.6 days matched his measurements.^[18] It was reported as a spectroscopic binary as recently as 2001,^[19] but is now believed to be a single star^[20]^[21] with a high rate of rotation for stars of this type.^[19]

References

^
S2CID 18759600

^
S2CID 125181833
.

^
doi:10.1086/110819

^
Bibcode:1986A&AS...65..405O

Bibcode:1967IAUS...30...57E

S2CID 119257644
.

^
S2CID 14624307
.

Centre de Données astronomiques de Strasbourg
, retrieved 2012-01-12
ISBN 978-1-931559-44-7
.

^ ^a ^b "IAU Catalog of Star Names". Retrieved 28 July 2016.

^ Allen, Richard Hinckley (1899), Star-names and their meanings, G. E. Stechert, p. 287

^ IAU Working Group on Star Names (WGSN), International Astronomical Union, retrieved 22 May 2016.

^ (in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 3 日 Archived 2011-05-21 at the Wayback Machine

doi:10.1093/mnras/219.3.479

Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original
on 2012-03-18, retrieved 2012-01-16

doi:10.1051/0004-6361:20042039

ISBN 3-540-29692-1
. The radius (R_*) is given by:
${\begin{aligned}2\cdot R_{*}&={\frac {(10^{-3}\cdot 190\cdot 0.74)\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 30\cdot R_{\bigodot }\end{aligned}}$

doi:10.1086/141699

^
doi:10.1051/0004-6361:20010408

S2CID 10416471

S2CID 14878976

Cite error: A list-defined reference named "aaa393_897" is not used in the content (see the help page).

External links

Kaler, James B., "SULAFAT (Gamma Lyrae)", Stars, University of Illinois, retrieved 2012-01-12

Retrieved from "https://en.wikipedia.org/w/index.php?title=Gamma_Lyrae&oldid=1225512289"

[aaa474_2_653-1] 
S2CID 18759600

[gordon2019-2] 
S2CID 125181833
.

[aj74_375-3] 
doi:10.1086/110819

[aaass65_2_405-4] 
Bibcode:1986A&AS...65..405O

[rgcrv-5] Bibcode:1967IAUS...30...57E

[Anderson2012-6] S2CID 119257644
.

[challouf2014-7] 
S2CID 14624307
.

[SIMBAD-8] Centre de Données astronomiques de Strasbourg
, retrieved 2012-01-12

[Kunitzsch-9] ISBN 978-1-931559-44-7
.

[IAU-CSN-10] "IAU Catalog of Star Names". Retrieved 28 July 2016.

[allen1899-11] Allen, Richard Hinckley (1899), Star-names and their meanings, G. E. Stechert, p. 287

[WGSN-12] IAU Working Group on Star Names (WGSN), International Astronomical Union, retrieved 22 May 2016.

[sb0-13] (in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 3 日 Archived 2011-05-21 at the Wayback Machine

[mnras219_479-14] doi:10.1093/mnras/219.3.479

[csiro-15] Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original
on 2012-03-18, retrieved 2012-01-16

[aaa431_773-16] doi:10.1051/0004-6361:20042039

[lang2006-17] ISBN 3-540-29692-1
. The radius (R_*) is given by:
${\begin{aligned}2\cdot R_{*}&={\frac {(10^{-3}\cdot 190\cdot 0.74)\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 30\cdot R_{\bigodot }\end{aligned}}$

[apj30_239-18] doi:10.1086/141699

[aaa371_1078-19] 
doi:10.1051/0004-6361:20010408

[aj133_2_545-20] S2CID 10416471

[mnras389_2_869-21] S2CID 14878976

[1]

[2]

[3]

[4]

[6]

[8]

[7]

[12]

[10]

[17]

[18]

[19]

[20]

[21]

@@ Line 15: / Line 15: @@
 | ra = {{RA|18|58|56.62241}}<ref name=aaa474_2_653/>
 | dec = {{DEC|+32|41|22.4003}}<ref name=aaa474_2_653/>
-| appmag_v = 3.261<ref name=aaass65_2_405/>
+| appmag_v = 3.24<ref name="gordon2019"/>
 | constell = [[Lyra]]
 }}
 {{Starbox character
 | class = B9&nbsp;III<ref name=aj74_375/>
-| b-v = –0.047<ref name=aaass65_2_405/>
+| b-v = –0.04<ref name="gordon2019"/>
 | u-b = –0.125<ref name=aaass65_2_405/>
 | variable =
@@ Line 35: / Line 35: @@
 {{Starbox detail
 | mass = 5.76<ref name=challouf2014/>
-| radius = 15.40<ref name=challouf2014/>
+| radius = {{val|13.28|1.15}}<ref name="gordon2019"/>
 | luminosity = 2,430<ref name=challouf2014/>
-| temperature = 10,000<ref name=challouf2014/>
+| temperature = {{val|11,000|100}}<ref name="gordon2019"/>
 | metal_fe = +0.15<ref name=challouf2014/>
 | rotation =
-| rotational_velocity = 71–72<ref name=aaa393_897/>
+| rotational_velocity = 65<ref name="gordon2019"/>
-| gravity = 4.06<ref name=challouf2014/>
+| gravity = {{val|3.5|0.25}}<ref name="gordon2019"/>
 | age =
 }}
@@ Line 134: / Line 134: @@
 <ref name=aaa371_1078>{{citation | display-authors=1 | last1=Adelman | first1=Saul J. | last2=Caliskan | first2=H. | last3=Kocer | first3=D. | last4=Kablan | first4=H. | last5=Yüce | first5=K. | last6=Engin | first6=S. | title=Elemental abundance analyses with DAO spectrograms. XXV. The superficially normal B and A stars alpha Draconis, tau Herculis, gamma Lyrae, and HR 7926 | journal=Astronomy and Astrophysics | volume=371 | pages=1078–1083 |date=June 2001 | issue=3 | doi=10.1051/0004-6361:20010408 | bibcode=2001A&A...371.1078A | doi-access=free }}</ref>
+<ref name="gordon2019">{{cite journal |doi=10.3847/1538-4357/ab04b2 |title=Angular Sizes, Radii, and Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array |year=2019 |last1=Gordon |first1=Kathryn D. |last2=Gies |first2=Douglas R. |last3=Schaefer |first3=Gail H. |last4=Huber |first4=Daniel |last5=Ireland |first5=Michael |journal=The Astrophysical Journal |volume=873 |issue=1 |page=91 |bibcode=2019ApJ...873...91G |s2cid=125181833 |doi-access=free }}</ref>
 <ref name=csiro>{{citation |title=The Colour of Stars |date=December 21, 2004 |work=Australia Telescope, Outreach and Education |publisher=[[Commonwealth Scientific and Industrial Research Organisation]] |url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |access-date=2012-01-16 |url-status=dead |archive-url=https://web.archive.org/web/20120318151427/http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |archive-date=2012-03-18 }}</ref>