Question

THE MASS OF AN EXOPKANET IS 9 TIMES TQHE QMASS OF THE EARTH AND ITS RADIUS IS 4 TIME THE RADIUS OF EARTH​

Answer 1

Explanation:

We study the masses and radii of 65 exoplanets smaller than 4 R ⊕ with orbital periods shorter than 100 days. We calculate the weighted mean densities of planets in bins of 0.5 R ⊕ and identify a density maximum of 7.6 g cm–3 at 1.4 R ⊕. On average, planets with radii up to R P = 1.5 R ⊕ increase in density with increasing radius. Above 1.5 R ⊕, the average planet density rapidly decreases with increasing radius, indicating that these planets have a large fraction of volatiles by volume overlying a rocky core. Including the solar system terrestrial planets with the exoplanets below 1.5 R ⊕, we find ρP = 2.43 + 3.39(R P/R ⊕) g cm–3 for R P < 1.5 R ⊕, which is consistent with rocky compositions. For 1.5 ≤ R P/R ⊕ < 4, we find M P/M ⊕ = 2.69(R P/R ⊕)0.93. The rms of planet masses to the fit between 1.5 and 4 R ⊕ is 4.3 M ⊕ with reduced χ2 = 6.2. The large scatter indicates a diversity in planet composition at a given radius. The compositional diversity can be due to planets of a given volume (as determined by their large H/He envelopes) containing rocky cores of different masses or compositions.

Answer 2

Answer:

I dono this question answer .अपने चाचा जी को जन्मदिन के उपहार के लिए धन्यवाद करने के लिए पत्र लिखिए

Please answer fast. Very urgent