Chandra Observation of the Starburst Galaxy NGC 2146(Poster)

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概要

• 論文の詳細を見る

• We conducted a monitoring observation of the starburst galaxy NGC 2146 with Chandra in 2002. We detected 72 point sources. Seven sources are ultra-luminous X-ray sources (ULXs) with luminosities of more than 10^<39> ergs s^<-1>. However, even the luminosity of the brightest source is 2 × 10^<39> ergs s^<-1> while that of the IMBH in M82 is 〜 10^<41> ergs s^<-1>. We found a hard X-ray point source at the dynamical center derived from a ^<12>CO rotation curve. Its luminosity is 〜 1 × 10^<39> ergs s^<-1>, which is dim if it is an AGN. We cannot identify either the NIR or radio counterparts of Chandra sources from the 2MASS All-Sky Point Source Catalogue or MERLIN and the VLA results. We summarized the characteristics of these Chandra sources and compiled the source catalogue of NGC 2146. We found diffuse emission in both a soft (0.5-2.0 keV) and a hard (2.0-10.0 keV) band. The spectra were fitted with a two-component model. The luminosity of the hard component is 〜 4 × 10-<39> ergs s^<-1>.

• 2004-11-15

著者

• Tsuru Takeshi

  Department Of Pathology Kumamoto University School Of Medicine

• Mineshige S

  Kyoto Univ. Kyoto

• INUI Tatsuya

  Department of Physics, Kyoto University

• MATSUSHITA Satoki

  Academia Sinica, Institute of Astronomy and Astrophysics

• Inui Tatsuya

  Peptide Institute Inc. Protein Research Foundation

• Inui Tatsuya

  Department Of Chemistry The College Of Staten Island/cuny

• Sumiyoshi Masanao

  Kyoto Univ. Kyoto

• Matsumoto Hironori

  Department Of Obstetrics And Gynecology School Of Medicine Kyorin University

• Mineshige Shin

  Kyoto Univ. Kyoto

• Matsushita Satoki

  Academia Sinica Taipei Twn

• Inui Tatsuya

  Department of Physics, Faculty of Science, Kyoto University

• TSURU Takeshi

  Department of Physics, Graduate School of Science, Kyoto University

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