19 Arietis

{{Starbox begin

| name = 19 Arietis

}}

{{Starbox observe

| epoch = J2000

| ra = {{RA|02|13|03.30440}}

| dec = {{DEC|+15|16|47.5005}}

| appmag_v = 5.70

| constell = Aries

}}

{{Starbox character

| class = M0 III

| r-i = 0.97

| v-r =

| b-v = +1.55

| u-b = +1.95

| variable = Semiregular

}}

{{Starbox astrometry

| radial_v = {{nowrap|21.11 ± 0.26}}

| prop_mo_ra = +97.95

| prop_mo_dec = -20.30

| parallax = 6.81

| p_error = 0.38

| parallax_footnote =

| absmag_v =

}}

{{Starbox detail

| mass =

| radius = 39.36

| luminosity = 301.969

| temperature = {{val|3838|125}}

| metal_fe = {{nowrap|–0.02 ± 0.11}}

| rotational_velocity =

| age_myr =

}}

{{Starbox catalog

| names = BD+14 357, FK5 1057, HD 13596, HIP 10328, HR 648, SAO 92841.

}}

{{Starbox reference

|Simbad=19+Ari

}}

19 Arietis (abbreviated 19 Ari) is a star in the northern constellation of Aries. 19 Arietis is the Flamsteed designation. It has an apparent visual magnitude of 5.70, which means it is faintly visible to the naked eye. Based upon an annual parallax shift of 6.81 mas, it is approximately {{Convert|480|ly|pc|abbr=off|lk=on}} away from Earth. At that distance, the brightness of the star is diminished by 0.21 in magnitude from extinction caused by interstellar gas and dust.

This is a red giant star with a stellar classification of M0 III. It is a semi-regular variable with periods of 32 and 275 days; the brightness of the star changes by an amplitude of 0.14 in magnitude during those intervals. 19 Arietis has expanded to 39 times the size of the Sun, its photosphere radiates 300 times the luminosity of the Sun. The effective temperature of the outer envelope is 3,838 K, giving it the cool reddish glow of an M-type star.

References

{{Reflist|refs=

{{citation | first=F. | last=van Leeuwen |date=November 2007 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | arxiv=0708.1752 | s2cid=18759600 | postscript=. }}

{{citation | display-authors=1 | last1=Famaey | first1=B. | last2=Jorissen | first2=A. | last3=Luri | first3=X. | last4=Mayor | first4=M. | last5=Udry | first5=S. | last6=Dejonghe | first6=H. | last7=Turon | first7=C. | title=Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters | journal=Astronomy and Astrophysics | volume=430 | issue=1 | pages=165–186 |date=January 2005 | doi=10.1051/0004-6361:20041272 | bibcode=2005A&A...430..165F | arxiv=astro-ph/0409579 | s2cid=17804304 | postscript=. }}

{{citation | display-authors=1 | last1=Johnson | first1=H. L. | last2=Iriarte | first2=B. | last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z. | title=UBVRIJKL photometry of the bright stars | journal=Communications of the Lunar and Planetary Laboratory | volume=4 | issue=99 | year=1966 | page=99 | bibcode=1966CoLPL...4...99J | postscript=. }}

{{citation | 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 | doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | postscript=. |date=September 2008| doi-access=free | s2cid=14878976 }}

{{citation | last1=Yeşilyaprak | first1=C. | last2=Aslan | first2=Z. | title=Period-luminosity relation for M-type semiregular variables from Hipparcos parallaxes | journal=Monthly Notices of the Royal Astronomical Society | volume=355 | issue=2 | pages=601–607 | doi=10.1111/j.1365-2966.2004.08344.x | bibcode=2004MNRAS.355..601Y | arxiv=0704.3150 | postscript=. |year=2007| doi-access=free }}

{{citation | last1=Taylor | first1=B. J. | title=Catalogs of temperatures and [Fe/H] averages for evolved G and K stars | journal=Astronomy and Astrophysics Supplement | volume=134 | pages=523–524 | doi=10.1051/aas:1999153 | bibcode=1999A&AS..134..523T | postscript=. |date=February 1999| issue=3 | doi-access=free }}

{{citation |last1=McDonald |first1=I. |last2=Zijlstra |first2=A. A. |last3=Watson |first3=R. A. |date=2017-10-01 |title=Fundamental parameters and infrared excesses of Tycho-Gaia stars |journal=Monthly Notices of the Royal Astronomical Society |volume=471 |pages=770–791 |doi=10.1093/mnras/stx1433 |doi-access=free |issn=0035-8711|arxiv=1706.02208 |bibcode=2017MNRAS.471..770M }} [https://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/MNRAS/471/770&RAJ2000=033.263772 19 Arietis' database entry] at VizieR.

{{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 |accessdate=2012-01-16 |url-status=dead |archiveurl=https://web.archive.org/web/20120318151427/http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |archivedate=March 18, 2012 }}

}}

External links

[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%20648 HR 648]
[http://aladin.u-strasbg.fr/AladinPreview?-c=02+13+03.3053%2B15+16+47.494&ident=SV*+ZI+++114&submit=Aladin+previewer Image 19 Arietis]

013596

010328

Arietis, 19

Category:Aries (constellation)

Category:M-type giants

Category:Durchmusterung objects

0648

Category:Suspected variables