The MBHBM Project. I. Measurement of the Central Black Hole Mass in Spiral Galaxy NGC 3504 Using Molecular Gas Kinematics

Dieu D. Nguyen, Mark Den Brok, Anil C. Seth, Timothy A. Davis, Jenny E. Greene, Michelle Cappellari, Joseph B. Jensen, Sabine Thater, Satoru Iguchi, Masatoshi Imanishi, Takuma Izumi, Kristina Nyland, Nadine Neumayer, Kouichiro Nakanishi, Phuong M. Nguyen, Takafumi Tsukui, Martin Bureau, Kyoko Onishi, Quang L. Nguyen, Ngan M. Le