Robust associations of massive baryonic objects

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In astronomy, a RAMBO or robust association of massive baryonic objects is a dark cluster made of brown dwarfs or white dwarfs.

Introduction

RAMBOs were proposed by Moore and Silk in 1995. They may have an effective radius between 1 and 15 pc, with masses in the range 10–100,000 $M_{\odot}$ (solar masses).[1]

Dynamics

The dynamics of these objects, if they do exist, must be quite different from that of standard star clusters. With a very narrow mass range (all brown dwarfs or white dwarfs), the evaporation rate of these RAMBOs should be very slow as predicted by the evolution of simulated mono-component cluster models.[2] Theoretically, these very long-lived objects could exist in large numbers. The presence of a clustered thick disk-like component of dark matter in the Galaxy has been suggested by Sanchez-Salcedo (1997, 1999) and Kerins (1997).[3][4][5]

References

1. ^ Moore, B., & Silk, J. 1995, Astrophysical Journal, 442, L5-L8 (ADS entry [1])
2. ^ de la Fuente Marcos, R. 1995, Astronomy and Astrophysics, 301, 407-418 (ADS entry [2])
3. ^ Kerins, E. J. 1997, Astronomy and Astrophysics, 322, 709-718 (ADS entry [3])
4. ^ Sánchez-Salcedo, F. J. 1997, Astrophysical Journal, 487, L61-L64 (ADS entry [4])
5. ^ Sánchez-Salcedo, F. J. 1999, Monthly Notices of the Royal Astronomical Society, 303, 755-772 (ADS entry [5])