PHANGS–ALMA: Arcsecond CO(2–1) Imaging of Nearby Star-forming Galaxies

Leroy, A.K.; Schinnerer, E.; Hughes, A.; Rosolowsky, E.; Pety, J.; Schruba, A.; Usero, A.; Blanc, G.A.; Chevance, M.; Emsellem, E.; Faesi, C.M.; Herrera, C.N.; Liu, D.; Meidt, S.E.; Querejeta, M.; Saito, T.; Sandstrom, K.M.; Sun, J.; Williams, T.G.; Anand, G.S.; Barnes, A.T.; Behrens, E.A.; Belfiore, F.; Benincasa, S.M.; Bešlić, I.; Bigiel, F.; Bolatto, A.D.; den Brok, J.S.; Cao, Y.; Chandar, R.; Chastenet, J.; Chiang, I.; Congiu, E.; Dale, D.A.; Deger, S.; Eibensteiner, C.; Egorov, O.V.; García-Rodríguez, A.; Glover Simon, C.O.; Grasha, K.; Henshaw, J.D.; Ho, I.; Kepley, A.A.; Kim, J.; Klessen, R.S.; Kreckel, K.; Koch, E.W.; Kruijssen, J.M.; Larson, K.L.; Lee, J.C.; Lopez, L.A.; Machado, J.; Mayker, N.; McElroy, R.; Murphy, E.J.; Ostriker, E.C.; Pan, H.; Pessa, I.; Puschnig, J.; Razza, A.; Sánchez-Blázquez, P.; Santoro, F.; Sardone, A.; Scheuermann, F.; Sliwa, K.; Sormani, M.C.; Stuber, S.K.; Thilker, D.A.; Turner, J.A.; Utomo, D.; Watkins, E.J.; Whitmore, B.

Авторы: Leroy Adam K., Schinnerer Eva, Hughes Annie, Rosolowsky Erik, Pety Jérôme, Schruba Andreas, Usero Antonio, Blanc Guillermo A., Chevance Mélanie, Emsellem Eric, Faesi Christopher M., Herrera Cinthya N., Liu Daizhong, Meidt Sharon E., Querejeta Miguel, Saito Toshiki, Sandstrom Karin M., Sun Jiayi, Williams Thomas G., Anand Gagandeep S., Barnes Ashley T., Behrens Erica A., Belfiore Francesco, Benincasa Samantha M., Bešlić Ivana, Bigiel Frank, Bolatto Alberto D., den Brok Jakob S., Cao Yixian, Chandar Rupali, Chastenet Jérémy, Chiang I-Da, Congiu Enrico, Dale Daniel A., Deger Sinan, Eibensteiner Cosima, Egorov Oleg V., García-Rodríguez Axel, Glover Simon C.O., Grasha Kathryn, Henshaw Jonathan D., Ho I-Ting, Kepley Amanda A., Kim Jaeyeon, Klessen Ralf S., Kreckel Kathryn, Koch Eric W., Kruijssen J.M.Diederik, Larson Kirsten L., Lee Janice C., Lopez Laura A., Machado Josh, Mayker Ness, McElroy Rebecca, Murphy Eric J., Ostriker Eve C., Pan Hsi-An, Pessa Ismael, Puschnig Johannes, Razza Alessandro, Sánchez-Blázquez Patricia, Santoro Francesco, Sardone Amy, Scheuermann Fabian, Sliwa Kazimierz, Sormani Mattia C., Stuber Sophia K., Thilker David A., Turner Jordan A., Utomo Dyas, Watkins Elizabeth J., Whitmore Bradley
Журнал: Astrophysical Journal, Supplement Series
Том: 257
Номер: 2
Год издания: 2021
Издательство: University of Chicago Press
Местоположение издательства: United States
Первая страница: 43
DOI: 10.3847/1538-4365/ac17f3
Аннотация: We present PHANGS–ALMA, the first survey to map CO J = 2 → 1 line emission at ∼1'' ∼100 pc spatial resolution from a representative sample of 90 nearby (d ≲ 20 Mpc) galaxies that lie on or near the z = 0 "main sequence" of star-forming galaxies. CO line emission traces the bulk distribution of molecular gas, which is the cold, star-forming phase of the interstellar medium. At the resolution achieved by PHANGS–ALMA, each beam reaches the size of a typical individual giant molecular cloud, so that these data can be used to measure the demographics, life cycle, and physical state of molecular clouds across the population of galaxies where the majority of stars form at z = 0. This paper describes the scientific motivation and background for the survey, sample selection, global properties of the targets, Atacama Large Millimeter/submillimeter Array (ALMA) observations, and characteristics of the delivered data and derived data products. As the ALMA sample serves as the parent sample for parallel surveys with MUSE on the Very Large Telescope, the Hubble Space Telescope, AstroSat, the Very Large Array, and other facilities, we include a detailed discussion of the sample selection. We detail the estimation of galaxy mass, size, star formation rate, CO luminosity, and other properties, compare estimates using different systems and provide best-estimate integrated measurements for each target. We also report the design and execution of the ALMA observations, which combine a Cycle 5 Large Program, a series of smaller programs, and archival observations. Finally, we present the first 1'' resolution atlas of CO emission from nearby galaxies and describe the properties and contents of the first PHANGS–ALMA public data release.
Добавил в систему: Егоров Олег Владимирович

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PHANGS–ALMA: Arcsecond CO(2–1) Imaging of Nearby Star-forming Galaxiesстатья