Accepted Cycle 9 Large / Very Large Proposals

Proposal Number	Subject Category	PI Name	Type	Time (Ks)	Title
09300101	WD BINARIES AND CV	Pooley	LP	305.4	A Chandra Legacy Survey of Dynamically Active Globular Clusters
09500471	SN, SNR AND ISOLATED NS	Slane	LP	300	A Deep Chandra Observation of G54.1+0.3
09620513	NORMAL GALAXIES: X-RAY POPULATIONS	Jenkins	LP	747.6	Galaxies across the Octaves: A Chandra Legacy Survey of SINGS Galaxies
09800310	CLUSTERS OF GALAXIES	Allen	LP	465	Probing Dark Energy with Relaxed Galaxy Clusters
09800847	CLUSTERS OF GALAXIES	Markevitch	LP	460	BOW SHOCK, ELECTRON-ION EQUILIBRIUM, BREAKUP OF COOL CORE, AND DARK SUBCLUSTER IN ABELL 520
09900660	EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS	Nandra	VLP	1800	The Evolution of Faint AGN at High Redshift
09910161	GALACTIC DIFFUSE EMISSION AND SURVEYS	Townsley	VLP	1080	The Great Nebula in Carina: Protoplanetary Disks to Starburst Galaxies
09910246	GALACTIC DIFFUSE EMISSION AND SURVEYS	Revnivtsev	LP	900	THE ORIGIN OF THE GALACTIC RIDGE X-RAY EMISSION

Subject Category: WD BINARIES AND CV

Proposal Number: 09300101

Title: A Chandra Legacy Survey of Dynamically Active Globular Clusters

PI Name: David Pooley

From our experience with Chandra, we have determined an empirical, successful, and model-independent method for determining the the neutron-star low-mass X-ray binary (LMXB) content and bright cataclysmic variable (CV) of a globular cluster (GC) in a reasonably short ACIS exposure. We propose a program that will discover ~30 LMXBs and ~150 CVs in 31 GCs. When combined with other observations, we will have direct knowledge of over 90% of the total LMXB population in GCs. We will accurately determine the role of GC dynamics in the formation of both LMXBs and CVs. We will also obtain an estimate for the density of the LMXBs and CVs in the field. This study will have important implications both for theories of LMXB and CV formation and for theories of GC dynamics and evolution.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time
19:18:02.10	+18:34:18.00	Pal 10	ACIS-S	NONE	11.2
18:31:23.20	-32:20:53.00	NGC 6637	ACIS-S	NONE	7.3
17:37:36.10	-03:14:45.00	NGC 6402	ACIS-S	NONE	12.2
17:38:36.60	-23:54:34.00	NGC 6401	ACIS-S	NONE	11.2
18:04:49.80	-07:35:09.00	NGC 6539	ACIS-S	NONE	14.6
18:30:56.10	-25:29:51.00	NGC 6638	ACIS-S	NONE	9
16:59:32.60	-37:07:17.00	NGC 6256	ACIS-S	NONE	9.4
17:14:32.10	-29:27:44.00	NGC 6304	ACIS-S	NONE	5.3
15:28:00.50	-50:40:22.00	NGC 5927	ACIS-S	NONE	7.7
17:19:11.80	-18:30:59.00	NGC 6333	ACIS-S	NONE	8.4
18:31:54.10	-23:28:31.00	NGC 6642	ACIS-S	NONE	7.6
18:06:08.60	-27:45:55.00	NGC 6540	ACIS-S	NONE	5
18:09:17.60	-25:54:31.00	NGC 6553	ACIS-S	NONE	5.5
18:43:12.70	-32:17:31.00	NGC 6681	ACIS-S	NONE	7.2
17:17:59.20	-23:45:57.00	NGC 6325	ACIS-S	NONE	17.9
21:33:29.30	-00:49:23.00	NGC 7089	ACIS-S	NONE	11.5
18:04:49.60	-30:03:21.00	NGC 6528	ACIS-S	NONE	12.3
17:10:10.20	-26:34:55.00	NGC 6293	ACIS-S	NONE	10
18:03:34.10	-30:02:02.00	NGC 6522	ACIS-S	NONE	8.4
13:46:26.50	-51:22:24.00	NGC 5286	ACIS-S	NONE	13.1
16:27:40.40	-38:50:56.00	NGC 6139	ACIS-S	NONE	17.8
18:01:50.60	-08:57:32.00	NGC 6517	ACIS-S	NONE	26.1
05:14:06.30	-40:02:50.00	NGC 1851	ACIS-S	NONE	19.6
17:50:12.90	-37:03:05.00	NGC 6441	ACIS-S	NONE	35.9
18:13:38.80	-31:49:37.00	NGC 6569	ACIS-S	NONE	11.2

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 09500471

Title: A Deep Chandra Observation of G54.1+0.3

PI Name: Patrick Slane

Chandra observations of pulsar wind nebulae have revolutionized our understanding of these systems, revealing a wide variety of complex structures that all relate to the basic conversion of spin-down power to an axisymmetric wind with collimated outflows. Based on initial observations, G54.1+0.3 displays Doppler-brightened emission from the wind termination shock region, large-scale jets that form the elongated structure of the nebula, and faint emission that hints at a possible torus as well as large-scale filamentary structure. We propose a Chandra Large Project to obtain deep observations of G54.1+0.3 in order to resolve these structures, study their spectra, and derive properties related to flow conditions and the magnetic field structure of the nebula.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time
19:30:30.20	+18:52:14.20	G54.1+0.3	ACIS-S	NONE	300

Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 09620513

Title: Galaxies across the Octaves: A Chandra Legacy Survey of SINGS Galaxies

PI Name: Leigh Jenkins

We propose to complete a rich, X-ray unbiased, multiwavelength Legacy dataset for a sample of 40 nearby galaxies. These galaxies are a distance limited (d < 10 Mpc) sample from the Spitzer Infrared Nearby Galaxy Survey (SINGS) Legacy program. The sample is now 45% complete. Our observations will detect X-ray binaries as faint as 3e36-1e37 erg/s, allowing us to constrain the X-ray binary/SFR correlation over a large range of galaxy properties and build X-ray binary Luminosity Functions for galaxies across a range of star formation histories. We will produce Legacy datasets and source catalogs for the community, and run theoretical binary population synthesis models in support of this effort.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time
09:26:11.50	-76:37:35.00	NGC 2915	ACIS-S	NONE	15.6
08:23:56.00	+71:01:45.50	M81 DwA	ACIS-S	NONE	26.3
10:05:30.60	+70:21:52.00	M81 DwB	ACIS-S	NONE	26.3
13:06:24.90	+67:42:25.00	DDO 165	ACIS-S	NONE	26.3
08:34:07.30	+66:10:54.60	DDO 53	ACIS-S	NONE	26.3
09:40:32.30	+71:10:56.00	Holmberg I	ACIS-S	NONE	26.3
09:57:32.00	+69:02:45.00	Holmberg IX	ACIS-S	NONE	26.3
10:28:21.50	+68:24:41.00	IC 2574	ACIS-I	NONE	11.2
09:47:15.50	+67:55:03.10	NGC 2976	ACIS-S	NONE	10
12:16:41.80	+69:28:09.70	NGC 4236	ACIS-I	NONE	11.2
12:54:05.50	+27:08:55.30	DDO 154	ACIS-S	NONE	62.6
12:56:43.90	+21:41:00.10	NGC 4826	ACIS-I	NONE	28.7
14:05:01.50	+53:39:44.60	NGC 5474	ACIS-S	NONE	30.7
00:09:56.50	-24:57:48.00	NGC 24	ACIS-S	NONE	43.3
11:20:15.10	+12:59:21.60	NGC 3627	ACIS-S	NONE	51
12:41:52.80	+41:16:25.90	NGC 4625	ACIS-S	NONE	58.1
02:14:03.70	+27:52:36.70	NGC 855	ACIS-S	NONE	59.3
10:19:54.80	+45:33:00.50	NGC 3198	ACIS-S	NONE	61.8
11:05:48.90	-00:02:05.90	NGC 3521	ACIS-I	NONE	74.1
12:50:52.60	+41:07:09.30	NGC 4736	ACIS-I	NONE	25.7
18:28:38.20	-66:58:54.00	IC 4710	ACIS-S	NONE	46.5

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 09800310

Title: Probing Dark Energy with Relaxed Galaxy Clusters

PI Name: Steven Allen

We seek to constrain dark energy using studies of the apparent evolution of the X-ray gas mass fraction in the most X-ray luminous, dynamically relaxed galaxy clusters. The proposed observations will improve the detection of the effects of dark energy from the X-ray data alone to > 5 sigma. More importantly, they will allow us to measure the level of intrinsic (systematic) scatter in distance measurements from this technique and establish whether this is smaller than from type Ia supernovae measurements. Used in combination with supernovae and CMB data, the new Chandra observations will allow the most precise search to date for evolution in the dark energy equation of state - our best approach in trying to understand the origin of cosmic acceleration.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time
04:39:02.30	+05:20:43.60	RXJ0439-0520	ACIS-I	NONE	30
21:29:39.90	+00:05:20.00	RXJ2129+0005	ACIS-I	NONE	30
10:23:39.40	+04:11:14.30	Zwicky 3146	ACIS-I	NONE	40
23:08:22.10	-02:11:29.10	Abell 2537	ACIS-I	NONE	40
14:27:39.40	-25:21:02.00	MACS1427-25	ACIS-I	NONE	30
22:29:45.30	-27:55:36.90	MACS2229	ACIS-I	NONE	15
11:15:52.10	+01:29:52.90	MACS1115	ACIS-I	NONE	40
01:59:49.30	+08:49:59.20	MACS0159	ACIS-I	NONE	20
20:46:00.60	-34:30:17.00	MACS2046	ACIS-I	NONE	40
13:59:10.30	-19:29:24.40	MACS1359	ACIS-I	NONE	50
16:21:24.80	+38:10:09.00	MACS1621	ACIS-I	NONE	60
14:27:16.20	+44:07:31.00	MACS1427+44	ACIS-I	NONE	40
13:11:01.60	-03:10:40.00	MACS1311	ACIS-I	NONE	30

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 09800847

Title: BOW SHOCK, ELECTRON-ION EQUILIBRIUM, BREAKUP OF COOL CORE, AND DARK SUBCLUSTER IN ABELL 520

PI Name: Maxim Markevitch

Shock fronts provide a unique tool to study the cluster plasma. Only two have been found, those in 1E0657 and A520. Using a long observation of 1E0657, we have determined, for the first time in any astrophysical plasma, that electron-proton equilibration time is shorter than Coulomb - a tantalizing result but based on one object. A520 gives the only chance to confirm it. Its shock also coincides with an edge of the radio halo, enabling tests of the origin of the intracluster relativistic electrons. A520 also exhibits a remnant of a cool core broken up by merger-induced instabilities, providing data on plasma viscosity. Finally, weak lensing map of A520 reveals an intriguing dark subcluster almost devoid of galaxies. We propose a long observation of this exceptionally interesting cluster.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time
04:54:05.40	+02:53:35.00	A520_OFF1	ACIS-I	NONE	115
04:54:05.40	+02:53:35.00	A520_OFF3	ACIS-I	NONE	115
04:54:05.40	+02:53:35.00	A520_OFF4	ACIS-I	NONE	115
04:54:05.40	+02:53:35.00	A520_OFF2	ACIS-I	NONE	115

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 09900660

Title: The Evolution of Faint AGN at High Redshift

PI Name: Kirpal Nandra

We propose a very deep (total 800ks/field) Chandra survey of 0.25 deg2 covering 3 contiguous fields in the Extended Groth Strip, which have exceptional multiwaveband coverage obtained by the AEGIS project. These data, in combination with the CDF North and South, will provide a definitive measurement of the evolution of faint, X-ray selected AGN from z=3-4, where the optical number counts start to drop dramatically. In combination with ultradeep Spitzer data in the same region, this survey will also provide a crucial step forward towards a more complete census of AGN activity and the importance of Compton thick AGN at high z, with associated implications for the total accretion budget of the universe.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time
14:20:15.50	+53:00:09.70	AEGIS-1	ACIS-I	NONE	600
14:19:12.00	+52:48:38.20	AEGIS-2	ACIS-I	NONE	600
14:18:09.00	+52:37:04.40	AEGIS-3	ACIS-I	NONE	600

Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 09910161

Title: The Great Nebula in Carina: Protoplanetary Disks to Starburst Galaxies

PI Name: Leisa Townsley

The Great Nebula in Carina is a superb site to study the violent massive star formation and feedback that typifies giant HII regions and starburst galaxies. We propose to map the Carina star-forming complex with a mosaic of 20 new 60-ks ACIS-I pointings as a testbed for understanding recent and ongoing star formation and to probe its regions of bright diffuse X-ray emission. We will provide a catalog of multiwavelength properties of ~12,000 X-ray-selected stars. We will explore superbubble confinement, shocks, cloud evaporation, mass-loading of winds, ISM enrichment, and HII region energetics. We will also examine Carina as a surrogate environment for our Solar System's formation, where protoplanetary disks are bathed in harsh winds and radiation from nearby massive stars.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time
10:45:53.70	-59:57:03.90	Carina Clusters Ptg 3	ACIS-I	NONE	60
10:44:43.90	-59:21:24.90	Carina Clusters Ptg 4	ACIS-I	NONE	60
10:47:12.50	-60:05:50.00	Carina Clusters Ptg 5	ACIS-I	NONE	60
10:46:06.70	-59:31:08.90	Carina Clusters Ptg 6	ACIS-I	NONE	60
10:43:19.70	-59:09:11.30	Carina Clusters Ptg 7	ACIS-I	NONE	60
10:46:59.70	-59:46:06.10	Carina East Ptg 1	ACIS-I	NONE	60
10:48:12.40	-59:32:31.00	Carina East Ptg 2	ACIS-I	NONE	60
10:48:26.00	-59:58:22.60	Carina East Ptg 3	ACIS-I	NONE	60
10:49:09.40	-59:45:24.10	Carina East Ptg 4	ACIS-I	NONE	60
10:45:15.10	-60:12:04.50	Carina South Pillars Ptg 1	ACIS-I	NONE	60
10:43:09.70	-60:14:38.90	Carina South Pillars Ptg 2	ACIS-I	NONE	60
10:46:55.00	-60:22:01.70	Carina South Pillars Ptg 4	ACIS-I	NONE	60
10:44:46.40	-60:25:40.50	Carina South Pillars Ptg 5	ACIS-I	NONE	60
10:41:31.80	-59:35:34.80	Carina Superbubble Ptg 1	ACIS-I	NONE	60
10:40:34.20	-59:49:30.70	Carina Superbubble Ptg 2	ACIS-I	NONE	60
10:41:52.10	-60:01:43.70	Carina Superbubble Ptg 3	ACIS-I	NONE	60
10:42:34.10	-59:22:44.90	Carina Superbubble Ptg 4	ACIS-I	NONE	60
10:48:47.50	-60:14:27.70	Carina South Pillars Ptg 3	ACIS-I	NONE	60

Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 09910246

Title: THE ORIGIN OF THE GALACTIC RIDGE X-RAY EMISSION

PI Name: Mikhail Revnivtsev

We propose a very deep (900 ksec) observation of a carefully selected patch of the Galaxy. This observation will provide the most direct and unambiguous answer to the 30-year-old puzzle of the nature of the Galactic "diffuse" X-ray emission. Recent studies comparing the luminosity function of X-ray sources in the Solar neighborhood with the number-flux distributions toward the Galactic Center and plane strongly suggest that the GRXE can be explained by the integrated emission of millions of faint stellar sources - CVs and coronally active stars. The surface density of them is expected to exceed 1 per 60sq.sec in the proposed observation, in sharp contrast to the expectation in the diffuse model. Clearly, Chandra is the only mission in the foreseeable future which can solve this problem.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time
17:51:27.30	-29:35:05.10	1.5deg_window	ACIS-I	NONE	900

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