$post_author: WP_User Object
(
    [data] => stdClass Object
        (
            [ID] => 199
            [user_login] => ralph-raico
            [user_pass] => 68387b8128d495bc66519693786eaaa3
            [user_nicename] => ralph-raico
            [user_email] => [email protected]
            [user_url] => 
            [user_registered] => 2011-12-07 15:12:49
            [user_activation_key] => 
            [user_status] => 0
            [display_name] => Ralph Raico
            [type] => wpuser
        )

    [ID] => 199
    [caps] => Array
        (
            [contributor] => 1
        )

    [cap_key] => wp_capabilities
    [roles] => Array
        (
            [0] => contributor
        )

    [allcaps] => Array
        (
            [edit_posts] => 1
            [read] => 1
            [level_1] => 1
            [level_0] => 1
            [delete_posts] => 1
            [email_single_user] => 1
            [contributor] => 1
        )

    [filter] => 
    [site_id:WP_User:private] => 1
)

get_the_author_meta: 

$bio: Ralph Raico (1936-2016) was Professor Emeritus in European history at Buffalo State College and a senior fellow of the Mises Institute. He was a specialist on the history of liberty, the liberal tradition in Europe, and the relationship between war and the rise of the state. He is the author of The Place of Religion in the Liberal Philosophy of Constant, Tocqueville, and Lord Acton.

$bios: Array
(
    [0] => Ralph Raico (1936-2016) was Professor Emeritus in European history at Buffalo State College and a senior fellow of the Mises Institute. He was a specialist on the history of liberty, the liberal tradition in Europe, and the relationship between war and the rise of the state. He is the author of The Place of Religion in the Liberal Philosophy of Constant, Tocqueville, and Lord Acton.
)

Ralph Raico (1936-2016) was Professor Emeritus in European history at Buffalo State College and a senior fellow of the Mises Institute. He was a specialist on the history of liberty, the liberal tradition in Europe, and the relationship between war and the rise of the state. He is the author of The Place of Religion in the Liberal Philosophy of Constant, Tocqueville, and Lord Acton.