{"id":595655,"date":"2023-01-09T05:49:18","date_gmt":"2023-01-09T11:49:18","guid":{"rendered":"https:\/\/news.sellorbuyhomefast.com\/index.php\/2023\/01\/09\/wolf-1069b-earth-mass-planet-in-the-habitable-zone-of-a-nearby-low-mass-star\/"},"modified":"2023-01-09T05:49:18","modified_gmt":"2023-01-09T11:49:18","slug":"wolf-1069b-earth-mass-planet-in-the-habitable-zone-of-a-nearby-low-mass-star","status":"publish","type":"post","link":"https:\/\/newsycanuse.com\/index.php\/2023\/01\/09\/wolf-1069b-earth-mass-planet-in-the-habitable-zone-of-a-nearby-low-mass-star\/","title":{"rendered":"Wolf 1069B: Earth-mass planet in the habitable zone of a nearby, low-mass star"},"content":{"rendered":"
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Astrophysics > Earth and Planetary Astrophysics<\/h2>\n<\/p>\n

arXiv:2301.02477<\/strong> (astro-ph)\n <\/p>\n

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[Submitted on 6 Jan 2023]<\/p>\n

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Authors:<\/span>D. Kossakowski<\/a>, M. K\u00fcrster<\/a>, T. Trifonov<\/a>, Th. Henning<\/a>, J. Kemmer<\/a>, J. A. Caballero<\/a>, R. Burn<\/a>, S. Sabotta<\/a>, J. S. Crouse<\/a>, T. J. Fauchez<\/a>, E. Nagel<\/a>, A. Kaminski<\/a>, E. Herrero<\/a>, E. Rodr\u00edguez<\/a>, E. Gonz\u00e1lez-\u00c1lvarez<\/a>, A. Quirrenbach<\/a>, P. J. Amado<\/a>, I. Ribas<\/a>, A. Reiners<\/a>, J. Aceituno<\/a>, V. J. S. B\u00e9jar<\/a>, D. Baroch<\/a>, S. T. Bastelberger<\/a>, P. Chaturvedi<\/a>, C. Cifuentes<\/a>, S. Dreizler<\/a>, S. V. Jeffers<\/a>, R. Kopparapu<\/a>, M. Lafarga<\/a>, M. J. L\u00f3pez-Gonz\u00e1lez<\/a>, S. Mart\u00ed n-Ruiz<\/a>, D. Montes<\/a>, J. C. Morales<\/a>, E. Pall\u00e9<\/a>, A. Pavlov<\/a>, S. Pedraz<\/a>, V. Perdelwitz<\/a>, M. P\u00e9rez-Torres<\/a>, M. Perger<\/a>, S. Reffert<\/a>, C. Rodr\u00edguez L\u00f3pez<\/a>, M. Schlecker<\/a>, P. Sch\u00f6fer<\/a>, A. Schweitzer<\/a>, Y. Shan<\/a>, A. Shields<\/a>, S. Stock<\/a>, E. Wolf<\/a>, M. R. Zapatero Osorio<\/a>, M. Zechmeister<\/a><\/p>\n<\/div>\n

Download PDF<\/a><\/p>\n

\n Abstract:<\/span> We present the discovery of an Earth-mass planet ($M_bsin i =
\n1.36pm0.21M_oplus$) on a 15.6d orbit of a relatively nearby ($dsim$9.6pc)
\nand low-mass ($0.167pm0.011 M_odot$) M5.0V star, Wolf 1069. Sitting at a
\nseparation of $0.0672pm0.0014$au away from the host star puts Wolf 1069b in
\nthe habitable zone (HZ), receiving an incident flux of
\n$S=0.652pm0.029S_oplus$. The planetary signal was detected using
\ntelluric-corrected radial-velocity (RV) data from the CARMENES spectrograph,
\namounting to a total of 262 spectroscopic observations covering almost four
\nyears. There are additional long-period signals in the RVs, one of which we
\nattribute to the stellar rotation period. This is possible thanks to our
\nphotometric analysis including new, well-sampled monitoring campaigns undergone
\nwith the OSN and TJO facilities that supplement archival photometry (i.e., from
\nMEarth and SuperWASP), and this yielded an updated rotational period range of
\n$P_{rot}=150-170$d, with a likely value at $169.3^{+3.7}_{-3.6}$d. The stellar
\nactivity indicators provided by the CARMENES spectra likewise demonstrate
\nevidence for the slow rotation period, though not as accurately due to possible
\nfactors such as signal aliasing or spot evolution. Our detectability limits
\nindicate that additional planets more massive than one Earth mass with orbital
\nperiods of less than 10 days can be ruled out, suggesting that perhaps Wolf
\n1069 b had a violent formation history. This planet is also the 6th closest
\nEarth-mass planet situated in the conservative HZ, after Proxima Centauri b, GJ
\n1061d, Teegarden’s Star c, and GJ 1002 b and c. Despite not transiting, Wolf
\n1069b is nonetheless a very promising target for future three-dimensional
\nclimate models to investigate various habitability cases as well as for
\nsub-ms$^{-1}$ RV campaigns to search for potential inner sub-Earth-mass planets
\nin order to test planet formation theories.<\/p>\n<\/blockquote><\/div>\n

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Submission history<\/h2>\n

From: Diana Kossakowski [view email<\/a>]
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[v1]<\/strong>
\nFri, 6 Jan 2023 12:25:44 UTC (12,683 KB)<\/p>\n<\/div><\/div>\n

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