10.1. The radial velocity method of exoplanet detection uses the fact that a star-planet pair orbit around a common center of gravity, called the barycenter. The text states that it is possible to measure a star’s motion as little as 3 m s-1.
(a) How far from the center of the Sun is the center of mass of the Sun-Jupiter system? Is this greater or smaller than the radius of the Sun? (2 pts)
(b) What is the velocity of the Sun about the Sun-Jupiter barycenter? Would the Sun’s wobble due to Jupiter be detectable (i.e is v > 3 m s-1)? (2 pts)
10.2. A red dwarf star of mass 0.2 Msun is orbited by a planet that transits once every 20 days.
(a) Using Newton’s version of Kepler’s 3rd law, P^2=(4π^2/GM)a^3, what is the semi-major axis for the orbit of the planet, in AU? (1 pts)
(b) Assuming the orbit is circular, you can use the circumference of the circle of radius a and the period from part (a) to get the velocity of the planet. What is the velocity in m s-1? (1 pts)
(c) Assuming also that the orbit is seen exactly edge on, what is the duration, in seconds, of the dip in the light curve, if the star has a radius of 0.4 Rsun, and the size of the planet can be neglected? (2 pts)
(d) The dip in the light curve is seen to take 10 minutes to reach its low point (ignore stellar limb darkening). What is the radius of the planet. Express the radius in km, and again in Jupiter radii. (2 pts)
Indicators of Help Seeking for Mental Health Among Men in the UK Presentation of the examination Writing has inconceivably reported that when comes to psychological well-being issues, men are more outlandish than lady to look for assistance. Despite the fact that men and lady experience the ill effects of psychological maladjustment at comparable rate, hesitance for looking for assistance can be especially negative for men. It is outstanding that downturn and nervousness in men are bound to show in types of substance misuse, similar to liquor and medicates, and can likewise have deadly results, for example, suicide. This awkwardness to looking for assistance might be clarified by the writing of social brain research, which can be related with belittling contemplations about emotional well-being and shirking of looking for assistance for mental issues. By considering different hypothetical research that can pursue from the brain research of men and manliness, impression of shame, learning of psychological wellness side effects and self-disgrace, can be a beginning stage to comprehend male perspective on assistance chasing. It can likewise assist scientists with identifying various factors that might be an obstruction that farthest point the manners by which men could conceivably look for assistance for mental issues. Presentation Men are frequently seen as reluctant to request help at whatever point they experience life issues. Cliché society regularly depicts men as reluctant to share emotions, request help and stay away from expert mental assistance. A developing collection of research bolster these thoughts, John Vessel (1993) found in his audit of a few epidemiological studies that around two - third of outpatient visits for emotional well-being were for lady. Men are more uncertain that lady to look for assistance for normal issues like sadness, uneasiness, substance misuse or physical handicap (Husain, Moore, and Cain, 1994; McKay, Rutherford, Cacciola, and Kabasakalian-Mckay, 1996). A study charged by The Mental Health Foundation discovered men are not just less inclined to look for assistance for mental issues, yet they are additionally more averse to converse with loved ones about mental issues. The study demonstrated that short of what one out of four men who were exceptionally worry sooner or later in their lives , never discussed that with relatives or companions . the review additionally uncovered that as an approach to manage significant level of pressure, men were almost certain than lady to go to liquor with one out of three men (31%) announcing that they start expending liquor or expanded their liquor utilization for stress remember. Close by with devouring liquor, men were twice as likely than lady to report utilizing drugs at whatever point they were pressure. In excess of 2,000,000 men in the UK who experienced pressure had answered to utilize sedates as way of dealing with stress. In the UK 67% of men said to have felt overpowered or unfit to adapt. with 29% of male detailing that they had suicide contemplations because of inclination profoundly stress. (Emotional well-being Foundation Survey 2018). There were 6,213 suicides in the UK and the Republic of Ireland in 2017, with 5,821 suicides enrolled in the UK and 392 suicides happened in the Republic of island. Men are multiple times bound to end it all than lady in the UK were us in the republic of Ireland, men are multiple times bound to story than claim like. The suicide rate was higher among more seasoned male 45-49 in the UK. In the republic of Ireland, the most elevated suicide rate was among male matured 25-34 (with a practically comparative rate between male age 45-54). there has been an abatement in suicide rate win the UK. It is realized that Male suicide rate in the UK is the most minimal since the 1989. The Samaritans Suicide measurements (2018). By empowering male wellbeing conduct as looking for mental assistance and featuring the sex contrasts in the utilization of wellbeing administration framework can be incorporated into general wellbeing discussion to bring issues to light of normal issues that men face when comes to look for and get the assistance that they need. This methodology can be advantageous for men as well as for their families and wellbeing experts to perceive that men underuse the assistance accessible to them. . Experimental research and mainstream sees on man help looking for inclination brought up significant issues to Psychologist and Mental wellbeing experts. Why numerous guys have issues in requesting mental assistance? How do membership to manliness standards, Stigma and the comprehend of emotional well-being side effects may or not impact men's utilizing the wellbeing administration accessible to them. Manliness Norms Manliness membership standards is an essential factor characterizing, confining and contrarily affecting young men and men' lives. Understanding men's inclination of looking for assistance can be deciphered as a result of manliness sexual orientation job socialization, which expect that people conduct and mentality are found out from social qualities, standards and belief system. Writing surveys have recognized key focuses in research of Masculinity job socialization; bn Manliness philosophy and sex struggle( Borst , and Wallace, 1994) The principal amass in the philosophy and conviction of being a men, "endeavor to gauge " men's membership and disguise of social standards and qualities with respect to manliness .(Pleck, Sonenstein, and Ku, 1993; Thompson and Pleck, 1986). The second distinguish the potential hazard related with the membership of manliness sexual orientation standards (sex - job struggle). With regards to depending on others, looking for assistance or discussion about passionate issues, it doesn't accomplishment with men's measures of manliness (Brannon and David, 1976; Golberg,1976;). Manliness belief system considers, shows that hostile perspectives about manliness standards are correspond with men's mental issues like; Depression, Anxiety, Stress, Self-Esteem, Shame, Suicide and relational clashes (Levant and Richmond, 2007; O'Neil 2010; Courtenay, 2000). Different examinations have assessed the relationship between Hegemonic Masculinity and its effect on an anger of long haul conditions just as distinguish ailments that possibly put manliness in danger (Charmaz, 1995). Authoritative Masculinity is portrayed by enthusiastic control and nonattendance of helplessness, it legitimizes men's predominance position in the public arena and clarify men's capacity of lady, (Connell, R. W., and Messerschmidt, J. W. (2005). It is appearing that men generally buy in to the convictions that men ought not look for assistance for physical and mental issues, except if the assistance advancement manliness somehow or another; (sexual execution and duty in the working environments. (O'Brien et al 2005). This might be on the grounds that downturn is seen as a ladylike sicknesses ( Branney and white 2008 ; Hirshbein 2006) or convictions that by being discouraged, the individual never again are responsible for their life , they are helpless and this evacuates the feeling of solidarity and power which doesn't partners with the possibility of Masculinity standards . (Oliffe et al 2012). Be that as it may, a few men have had the option to fabricate a positive manliness personality for themselves that doesn't includes authoritative frame of mind. Emelie et al 2006 found that few guys, would for sure underline their reasonableness and defenselessness and they decipher their capacity to discuss sadness as a quality which empower them to discuss indications that many would translate as female. this demonstrates in spite of discussions about psychological well-being not being related with authoritative works on, discussing issues identified with emotional wellness can likewise make manliness character versatile to ailments that may being seen as a danger Manliness philosophy may not be equivalent among individuals and gathering, it is emotional to change after some time. Thinking back in early history of manliness, may assist us with understanding the source of prevailing types of" Hegemonic "manliness which thus may assist us discover elective ways with constructing manliness that develops more advantageous methods for communicating mental issues History of Masculinity Today it is well tolerating among social researcher and history specialist that manliness characteristics are not simply trait yet is enormous to a limited extent socially and socially built. (Kimmel, Michael S.; Aronson, Amy, 2004). The picture of a solid unemotional male is as yet transcendent in western culture in these days. from the beginning of time male restraint of feelings has a consistent change. In Georgian period (1714-1830) For example, when with the act of analyzation and the science propelled, it was proposed that that the focal sensory system was a major piece of the cerebrum enabling doctors to comprehend about the body. (Ali Haggett 2014). Doctors discussed its capacity and how the focal sensory system functioned and were related with sicknesses and burden. Thus, doctors had another enthusiasm for the apprehensive issue that appears to influence man and lady in equivalent manner. The person who shows syne of the apprehensive issues were high status families which was consider having a better sensory system in including to more unfortunate individuals. Being anxious in Georgian culture was a well-acknowledged and was an indication of class. In Georgian time, man Display of feelings was not an indication of shortcoming or nor was a relationship with gentility or sexual practice. During this time a developing number of specialists and "restorative treatise "began to rise, giving guidance on way of life and drug. The book called The Malady, distributed by the doctor George Cheyne in 1733, incorporate case history of a portion of his patients just as Chaine's very own portrayal fight with stoutness and misery. She portrays experience the manifestations of despairing, sleep deprivation, lowness of soul and anxious adjustment which was a consequence of lavish way of life of a model urban life. "The rich would in general eat a lot of rich nourishment and exercise pretty much nothing. Their rearing and training made them normally refined and increasingly delicate, both physically and rationally, and progressively defenseless against anxious issue. The English Malady incorporates contextual investigations and Cheyne's own collection of memoirs. The patients portrayed>GET ANSWER