Cluster Lensing and Supernova survey with Hubble
Alternative names | CLASH |
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The Cluster Lensing And Supernova survey with Hubble (CLASH) was a program on the Hubble Space Telescope to observe 25 massive galaxy clusters. CLASH was one of three programs selected (along with CANDELS and ) in the first class of Hubble multi-cycle treasury programs, which were designed to tackle large questions unanswerable through normal observations.[1] Observations for CLASH were conducted between November 2010 and July 2013.[2] CLASH was led by principal investigator Marc Postman, and had a science team of over 40 researchers.[2]
Primary observations for CLASH were conducted on the Hubble Space Telescope with the Advanced Camera for Surveys (ACS) and Wide Field Camera 3 (WFC3). Images were taken in 16 filters, which were selected to maximize the ability to detect distant galaxies behind each cluster.[3] Twenty of the observed clusters were selected due to their relaxed morphology in X-ray observations, while the other five were chosen due to their strength as gravitational lenses.
History[]
As of November 2012, the CLASH has surveyed 20 clusters out of the 25. One of the galaxy clusters, MACS J0647+7015 was found to have gravitationally lensed the most distant galaxy (MACS0647-JD) then ever imaged, in 2012.[5][6]
In 2013, one study utilizing CLASH data found that RX J1347.5-1145 had intense gravitational bending of light such that 8 images of the same object were detected.[7] (See Gravitational lensing)
Clusters under observation[]
List of clusters is:[8]
Galaxy cluster | Right Ascension | Declination | Redshift | Notes |
---|---|---|---|---|
() | 01:31:52.57 | -13:36:38.8 | 0.206 | |
Abell 383 () | 02:48:03.36 | -03:31:44.7 | 0.187 | |
03:29:41.68 | -02:11:47.7 | 0.450 | ||
04:29:36.10 | -02:53:08.0 | 0.399 | ||
07:44:52.80 | +39:27:24.4 | 0.686 | ||
() | 08:00:56.83 | +36:03:24.1 | 0.288 | |
11:15:52.05 | +01:29:56.6 | 0.352 | ||
() | 11:57:17.26 | +33:36:37.4 | 0.213 | |
12:06:12.28 | -08:48:02.4 | 0.440 | ||
() | 12:26:58.37 | +33:32:47.4 | 0.890 | |
13:11:01.67 | -03:10:39.5 | 0.494 | ||
RX J1347.5-1145 | 13:47:30.59 | -11:45:10.1 | 0.451 | [Notes 1] |
14:23:47.76 | +24:04:40.5 | 0.545 | ||
15:32:53.78 | +30:20:58.7 | 0.345 | ||
17:20:16.95 | +35:36:23.6 | 0.391 | ||
Abell 2261 () | 17:22:27.25 | +32:07:58.6 | 0.224 | |
19:31:49.66 | -26:34:34.0 | 0.352 | ||
21:29:39.94 | +00:05:18.8 | 0.234 | ||
21:40:15.18 | -23:39:40.7 | 0.313 | ||
( / ) |
22:48:44.29 | -44:31:48.4 | 0.348 | |
MACS0416.1-2403 | 04:16:09.39 | -24:04:03.9 | 0.42 | |
MACS0647.8+7015 | 06:47:50.03 | +70:14:49.7 | 0.584 | |
MACS0717.5+3745 | 07:17:31.65 | +37:45:18.5 | 0.548 | |
11:49:35.86 | +22:23:55.0 | 0.544 | ||
21:29:26.06 | -07:41:28.8 | 0.570 |
Notes[]
- ^ One of the most X-ray luminous and most massive cluster known, with an X-ray luminosity in excess of 10^45^erg/s. Magellan Spectroscopy of the Galaxy Cluster RX J1347.5-1145: Redshift Estimates for the Gravitationally Lensed Arcs
References[]
- ^ "Science Year in Review: Hubble 2011" (PDF). HubbleSite. Space Telescope Science Institute. Retrieved 3 February 2019.
- ^ a b Postman, Marc. "CLASH: An Innovative Survey to Place New Constraints on the Fundamental Components of the Cosmos using the Hubble Space Telescope". Space Telescope Science Institute. Retrieved 3 February 2019.
- ^ Postman, Marc; Coe, Dan; Benítez, Narciso; Bradley, Larry; Broadhurst, Tom; Donahue, Megan; Ford, Holland; Graur, Or; Graves, Genevieve; Jouvel, Stephanie; Koekemoer, Anton; Lemze, Doron; Medezinski, Elinor; Molino, Alberto; Moustakas, Leonidas; Ogaz, Sara; Riess, Adam; Rodney, Steve; Rosati, Piero; Umetsu, Keiichi; Zheng, Wei; Zitrin, Adi; Bartelmann, Matthias; Bouwens, Rychard; Czakon, Nicole; Golwala, Sunil; Host, Ole; Infante, Leopoldo; Jha, Saurabh; Jimenez-Teja, Yolanda; Kelson, Daniel; Lahav, Ofer; Lazkoz, Ruth; Maoz, Dani; McCully, Curtis; Melchior, Peter; Meneghetti, Massimo; Merten, Julian; Moustakas, John; Nonino, Mario; Patel, Brandon; Regös, Enikö; Sayers, Jack; Seitz, Stella; Van der Wel, Arjen (1 April 2012). "The Cluster Lensing and Supernova Survey with Hubble: An Overview". The Astrophysical Journal Supplement Series. 199 (2): 25. arXiv:1106.3328. Bibcode:2012ApJS..199...25P. doi:10.1088/0067-0049/199/2/25. S2CID 34368160.
- ^ "CLASH Survey Brightest Cluster Galaxies and Simulations". Retrieved 10 August 2015.
- ^ Hubble helps find candidate for most distant object in the Universe yet observed
- ^ Scientific Objectives of CLASH[permanent dead link]
- ^ F. Köhlinger and R.W. Schmidt - Strong lensing in RX J1347.5-1145 revisited (2013)
- ^ Postman, Marc; Coe, Dan; Benítez, Narciso; Bradley, Larry; Broadhurst, Tom; Donahue, Megan; Ford, Holland; Graur, Or; Graves, Genevieve; Jouvel, Stephanie; Koekemoer, Anton; Lemze, Doron; Medezinski, Elinor; Molino, Alberto; Moustakas, Leonidas; Ogaz, Sara; Riess, Adam; Rodney, Steve; Rosati, Piero; Umetsu, Keiichi; Zheng, Wei; Zitrin, Adi; Bartelmann, Matthias; Bouwens, Rychard; Czakon, Nicole; Golwala, Sunil; Host, Ole; Infante, Leopoldo; Jha, Saurabh; et al. (2012). "The Cluster Lensing and Supernova Survey with Hubble: An Overview". The Astrophysical Journal Supplement Series. 199 (2): 25. arXiv:1106.3328. Bibcode:2012ApJS..199...25P. doi:10.1088/0067-0049/199/2/25. S2CID 34368160.
- Astronomical surveys
- Observational astronomy