Publications of The Korean Astronomical Society (천문학논총)

The Korean Astronomical Society (한국천문학회)
권호 표지
DOI QR코드

DOI QR Code

PRE-PROCESSING OF GALAXIES IN THE FILAMENTS AROUND THE VIRGO CLUSTER

  • YOON, HYEIN (Department of Astronomy, Yonsei University) ;
  • CHUNG, AEREE (Department of Astronomy, Yonsei University) ;
  • SENGUPTA, CHANDREYEE (Korea Astronomy and Space Science Institute) ;
  • WONG, O. IVY (International Centre for Radio Astronomy Research, M468, The University of Western Australia) ;
  • BUREAU, MARTIN (Sub-Department of Astrophysics, Department of Physics, University of Oxford) ;
  • REY, SOO-CHANG (Department of Astronomy and Space Science, Chungnam National University) ;
  • VAN GORKOM, J.H. (Department of Astronomy, Columbia University)
  • Received : 2014.11.30
  • Accepted : 2015.06.30
  • Published : 2015.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

Galaxies can be "pre-processed" in the low-density outskirts by ambient medium in the filaments or tidal interactions with other galaxies while falling into the cluster. In order to probe how early on and by which mechanisms galaxies can be affected before they enter high-density cluster environments, we are carrying out an atomic hydrogen ($H\small{I}$) imaging study of a sample of galaxies selected from three filamentary structures around the Virgo cluster. Our sample consists of 14 late-type galaxies, which are potentially interacting with their surroundings. The $H\small{I}$ observations have been done using the Westerbork Synthesis Radio Telescope, the Giant Metrewave Radio Telescope, and the Jansky Very Large Array with column density sensitivity of ${\approx}3-5{\times}10^{19}cm^{-2}$ in $3{\sigma}$ per channel, which is low enough to detect faint $H\small{I}$ features in the outer disks of galaxies. In this work, we present the Hi data of two galaxies that were observed with GMRT. We examine the $H\small{I}$ morphology and kinematics to find the evidence for gas-gas and/or tidal interactions, and discuss which mechanism(s) could be responsible for pre-processing in these cases.

Keywords

References

  1. Binggeli, B., Sandage, A., & Tammann, G. A., 1985, Studies of the Virgo Cluster. II - A Catalog of 2096 Galaxies in the Virgo Cluster Area, AJ, 90, 1681 https://doi.org/10.1086/113874
  2. Cortese, L., Gavazzi, G., & Boselli, A., et al., 2006, Witnessing Galaxy Preprocessing in the Local Universe: the Case of a Star-bursting Group Falling into Abell 1367, A&A, 453, 847 https://doi.org/10.1051/0004-6361:20064873
  3. Fujita, Y., 2004, Pre-processing of Galaxies before Entering a Cluster, PASJ, 56, 29 https://doi.org/10.1093/pasj/56.1.29
  4. Haynes, M. P., Giovanelli, R., & Martin, A. M., et al., 2011, The Arecibo Legacy Fast ALFA Survey: The ${\alpha}$.40 H I Source Catalog, Its Characteristics and Their Impact on the Derivation of the H I Mass Function, AJ, 142, 170 https://doi.org/10.1088/0004-6256/142/5/170
  5. Karachentsev, I. D. & Nasonova, O. G., 2013, Intense Look at Virgo Southern Extension, MNRAS, 429, 2677 https://doi.org/10.1093/mnras/sts557
  6. Keres, D., Katz, N., Weinberg, D. H., & Dave, R., 2005, How Do Galaxies Get Their Gas?, MNRAS, 363, 2 https://doi.org/10.1111/j.1365-2966.2005.09451.x
  7. Mahajan, S., 2013, Evidence for Galaxies being Preprocessed before Accreted into Clusters, MNRAS, 431, L117 https://doi.org/10.1093/mnrasl/slt021
  8. Meyer, M. J., Zwaan, M. A., & Webster, R. L., et al., 2004, The HIPASS Catalogue - I. Data Presentation, MNRAS, 350, 1195 https://doi.org/10.1111/j.1365-2966.2004.07710.x
  9. Paturel, G., Theureau, G., & Bottinelli, L., et al., 2003, HYPERLEDA. II. The Homogenized H I Data, A&A, 412, 57 https://doi.org/10.1051/0004-6361:20031412
  10. Rines, K., Mahdavi, A., & Geller, M. J., et al., 2001, X-Ray-emitting Groups in the Infall Region of Abell 2199, ApJ, 555, 558 https://doi.org/10.1086/321513
  11. Sancisi, R., Fraternali, F., Oosterloo, T., & van der Hulst, T., 2008, Cold Gas Accretion in Galaxies, A&ARv, 15, 189 https://doi.org/10.1007/s00159-008-0010-0
  12. Solanes, J. M., Manrique, A., & Garcia-Gomez, C., et al., 2001, The H I Content of Spirals. II. Gas Deficiency in Cluster Galaxies, ApJ, 548, 97 https://doi.org/10.1086/318672
  13. Tonnesen, S., Bryan, G. L., & van Gorkom, J. H., 2007, Environmentally Driven Evolution of Simulated Cluster Galaxies, ApJ, 671, 1434 https://doi.org/10.1086/523034
  14. Tully, R. B., 1982, The Local Supercluster, ApJ, 257, 389 https://doi.org/10.1086/159999

Cited by

  1. LARGE-SCALE FILAMENTARY STRUCTURES AROUND THE VIRGO CLUSTER REVISITED vol.833, pp.2, 2016, https://doi.org/10.3847/1538-4357/833/2/207