Arya Samaj is a sect prevalent in India. The followers of Arya Samaj or Maharishi Dayanand are called Arya Samajis. Swami Dayanand, one of the most renowned saints of India is the founder of Arya Samaj. The Arya Samajis consider the Vedas (Rig Ved, Sam Ved, Yajur Ved and Atharav Ved) to be the greatest scriptures. The four vedas are indeed the most sacred of the Hindu Scriptures. At the time when the vedas were written, there was no religion. So in essence vedas are not really specific to any particular religion or sect but are pertinent to the whole mankind.
Dayanand Saraswati made an attempt to translate the vedas. He managed to translate the Yajurveda in full and only a part of Rig Veda before he met with his death.
Dayanand Saraswati wrote a book of his experiences and his understanding of life in general which is called Satyarth Prakash. Swami Dayanand laid a great deal of stress on the teachings mentioned in the Vedas and asked his followers to adopt the vedic teachings as the way of life. Undoubtedly Swami Dayanand can be regarded as the only saint who kept the Vedas alive and his followers continued the legacy forward by following his footsteps.
Unfortunately a deeper look in to Satyarth Prakash reveals the dark side of Swami Dayanand which raises questions about his character and his characterless and stupid teachings.