11 Puppis

{{Short description|Star in the constellation Puppis}}

{{about|j Puppis|J Puppis|HD 64760}}

{{Starbox begin}}

{{Starbox image

|image=

{{Location mark

|image=Puppis constellation map.svg|alt=|float=center|width=280

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=11 Puppis

|x=364|y=447

}}

|caption=Location of 11 Puppis (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Puppis

| ra = {{RA|07|56|51.53900}}{{cite journal | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | last1=Van Leeuwen | first1=F. | s2cid=18759600 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%2038835 Vizier catalog entry]

| dec = {{DEC|−22|52|48.4340}}

| appmag_v = 4.20{{cite journal | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | title=XHIP: An extended hipparcos compilation | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | s2cid=119257644 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=V/137D/XHIP&HIP=38835 Vizier catalog entry]

}}

{{Starbox character

| class = F7/8 II

| b-v = +0.72{{cite journal | bibcode=2006yCat.2168....0M | title=VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991) | journal=VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie | volume=2168 | last1=Mermilliod | first1=J. C. | year=2006 }}[http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=II/168/ubvmeans&LID=%2B100065228 Vizier catalog entry]

| u-b = +0.44

}}

{{Starbox astrometry

| radial_v = +13.30{{Cite journal | doi=10.1134/S1063773706110065 | bibcode=2006AstL...32..759G| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system| journal=Astronomy Letters| volume=32| issue=11| pages=759–771| year=2006| last1=Gontcharov| first1=G. A.|arxiv = 1606.08053 | s2cid=119231169}}

| prop_mo_ra = −30.42

| prop_mo_dec = +11.49

| parallax = 6.25

| p_error = 0.23

| parallax_footnote =

| absmag_v = −1.82

}}

{{Starbox detail

| mass = 2.7{{cite journal | title=Analysis of the Non-LTE Lithium Abundance for a Large Sample of F-, G-, and K-Giants and Supergiants | last1=Lyubimkov | first1=L. S. | last2=Petrov | first2=D. V. | journal=Astrophysics | volume=60 | issue=3 | pages=333–347 | date=September 2017 | doi=10.1007/s10511-017-9487-4 | arxiv=1710.04852 | bibcode=2017Ap.....60..333L | s2cid=119333383 }}

| temperature = 5,868{{cite journal | bibcode=2014AJ....147..137L | doi=10.1088/0004-6256/147/6/137 | title=Parameters and Abundances in Luminous Stars | journal=The Astronomical Journal | volume=147 | issue=6 | pages=137 | year=2014 | last1=Earle Luck | first1=R. | doi-access=free }}

| luminosity = 515

| rotational_velocity = 13.8{{cite journal | bibcode=1999A&AS..139..433D | doi=10.1051/aas:1999401 | title=A catalog of rotational and radial velocities for evolved stars | journal=Astronomy and Astrophysics Supplement Series | volume=139 | issue=3 | pages=433 | year=1999 | last1=De Medeiros | first1=J. R. | last2=Mayor | first2=M. | arxiv=astro-ph/0608248 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bAS/139/433/table5&Name=HD%2065228 Vizier catalog entry]

| gravity = 1.99

| metal_fe = +0.09

}}

{{Starbox catalog

| names = {{odlist | B=j Pup | F=11 Pup | BD=−22°2087 | CD=−22°5403 | FK5=2615 | HD=65228 | HIP=38835 | HR=3102 | SAO=174852 | GC=10756 | GSC=06553-03890 }}{{cite simbad | title=j Pup | access-date=8 September 2012}}

}}

{{Starbox reference

| Simbad = 11+Puppis

}}

{{Starbox end}}

11 Puppis is a single{{cite journal | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 }} star in the southern constellation of Puppis, located approximately 522 light years away based on parallax. It has the Bayer designation j Puppis; 11 Puppis is the Flamsteed designation. This object is visible to the naked eye as a faint, yellow-white star with an apparent visual magnitude of 4.20. It is moving further from the Earth with a heliocentric radial velocity of +13.3 km/s.

This is an evolved bright giant star with a stellar classification of F7/8 II. The spectrum displays a deficit of carbon, an excesses of nitrogen, and a high abundance of lithium. The first two anomalies suggest the giant has passed through a deep convection stage that would have also exhausted the lithium supply, indicating the current lithium abundance is of recent production. The star has 2.7 times the mass of the Sun and is radiating 515 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,868 K.